Kirk House, P.O. Box 1100-G, Grand Cayman, B.W.I

TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 9712 653 187 Total Number of Pages : 7 (including this page)Ahmed Obaidly P.O. Box 41015 Abu Dhabi United Arab EmiratesInvestment Vehicle : Ahmed Obaidly Commitment : US$2,000,000Dear Mr. Obaidly,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Ahmed Obaidly Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 44 1534 68632 Total Number of Pages : 7 (including this page)Mark A. Young 2nd Floor, Queen's House Don Road St. Helier JE1, 4HP JerseyInvestment Vehicle : Alberville Investments Limited Commitment : US$5,000,000Dear Mr. Young,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Alberville Investments Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 46 8 570 398 99 Total Number of Pages : 7 (including this page)Claus Stenbaek Odelbergs Vag 9 Gustavsberg S-134 40 SwedenInvestment Vehicle : Alberville Investments Limited Commitment : US$5,000,000Dear Mr. Stenbaek,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Alberville Investments Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 44 171 499 4284 Total Number of Pages : 7 (including this page)Ramzi A. Dalloul 15 Park Towers 2 Brick Street London W1Y 7DF United KingdomInvestment Vehicle : Arab Investment and Management Corporation N.V. Commitment : US$2,000,000Dear Dr. Dalloul,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Arab Investment and Management Corporation N.V. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 966 2 683 2229 Total Number of Pages : 7 (including this page)Yousuf Khayat P.O. Box 4384 Jeddah 21491 SAUDI ARABIAInvestment Vehicle : Atwill Holdings Limited Commitment : US$10,000,000Dear Mr. Khayat,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$203,788 Investment in Sight Resources Corporation US$207,147 ------Total Funding Obligation US$410,935 Your total funding obligation of US$410,935 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Atwill Holdings Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (1) 345 949 0993 Total Number of Pages : 7 (including this page)Christine Godfray P.O. Box 1100G Grand Cayman Cayman IslandsInvestment Vehicle : Baer US Venture Equities, LTD. Commitment : US$8,000,000Dear Ms. Godfray,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$163,030 Investment in Sight Resources Corporation US$165,717 ------Total Funding Obligation US$328,747 Your total funding obligation of US$328,747 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Baer US Venture Equities, LTD. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (1) 345 949 0993 Total Number of Pages : 7 (including this page)Peter W. C. Goulden P.O. Box 1100G Grand Cayman Cayman IslandsInvestment Vehicle : Baer US Venture Equities, LTD. Commitment : US$8,000,000Dear Mr. Goulden,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$163,030 Investment in Sight Resources Corporation US$165,717 ------Total Funding Obligation US$328,747 Your total funding obligation of US$328,747 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Baer US Venture Equities, LTD. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (41) 75 237 5859 Total Number of Pages : 7 (including this page)Michael von und zu Liechtenstein Herrengasse 21 Vaduz FL-9490 LichtensteinInvestment Vehicle : Bartlow Securities LTD. Commitment : US$2,000,000Dear Prinz Liechtenstein,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Bartlow Securities LTD. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (41) 22 310 44 41 Total Number of Pages : 7 (including this page)Christian Wagner 12 Cours des Bastions Case Postale 3341 Geneva 3 CH-1211 SwitzerlandInvestment Vehicle : Bartlow Securities LTD. Commitment : US$2,000,000Dear Mr. Wagner,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Bartlow Securities LTD. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (971) 2 276 800 Total Number of Pages : 7 (including this page)Moncef Ben Hamida P.O. Box 203 Abu Dhabi U.A.E.Investment Vehicle : Bin Hamoodah Co. Commitment : US$2,000,000Dear Mr. Hamida,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Bin Hamoodah Co. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (971) 2 276 800 Total Number of Pages : 7 (including this page)Samir A. Hijazi P.O. Box 203 Abu Dhabi U.A.E.Investment Vehicle : Bin Hamoodah Co. Commitment : US$2,000,000Dear Mr. Hijazi,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Bin Hamoodah Co. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (41) 75 237 58 59 Total Number of Pages : 7 (including this page)Michael von Liechtenstein P.O. Box 339 Vaduz 9490 LichtensteinInvestment Vehicle : Campbeltown Properties Ltd., B.V.I. Commitment : US$5,000,000Dear Prinz Liechtenstein,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Campbeltown Properties Ltd., B.V.I. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (41) 22 312 40 68 Total Number of Pages : 7 (including this page)CIF S.A. Case Postale 3146 Geneva 3 CH-1211 SwitzerlandInvestment Vehicle : Candida Fund Inc. Commitment : US$3,000,000Dear CIF S.A.,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$61,136 Investment in Sight Resources Corporation US$62,144 ------Total Funding Obligation US$123,280 Your total funding obligation of US$123,280 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Candida Fund Inc. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 966 2 669 6356 Total Number of Pages : 7 (including this page)Sami Baarma P.O. Box 15844 Jeddah 21454 Saudi ArabiaInvestment Vehicle : Carpal Holdings Limited Commitment : US$5,000,000Dear Mr. Baarma,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Carpal Holdings Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 1 212 805 2554 Total Number of Pages : 7 (including this page)Jagan Reddy 33 East 67th Street New York, NY 10021 USAInvestment Vehicle : Carpal Holdings Limited Commitment : US$5,000,000Dear Mr. Reddy,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Carpal Holdings Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 1 241 6356 Total Number of Pages : 7 (including this page)Mailing Schaeffner Reitergoisse 9-11 P.O. Box 131 Zurich 8027 SwitzerlandInvestment Vehicle : Davos Limited Commitment : US$1,000,000Dear Ms. Schaeffner,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Davos Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 22 317 5572 Total Number of Pages : 7 (including this page)Jean Letore 16, Quai General Guisan P.O. Box 3496 Geneva - 3 CH-1211 SwitzerlandInvestment Vehicle : Davos Limited Commitment : US$1,000,000Dear Mr. Letore,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Davos Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 1(561) 338-7145 Total Number of Pages : 7 (including this page)Felix A. Smolka 701 Sanctuary Drive Boca Raton, FL 33431Investment Vehicle : Durant Trading, L.C. Commitment : US$1,000,000Dear Felix Smolka,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Durant Trading, L.C. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 44 1481 722 046 Total Number of Pages : 7 (including this page)James McDonald P.O. Box 141, La Tonnelle House Les Banques St. Sampson GYI 3HS Guernsey, Channel IslandsInvestment Vehicle : Fielding Holdings Limited Commitment : US$2,000,000Dear Mr. McDonald,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Fielding Holdings Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 1713 871 9938 Total Number of Pages : 7 (including this page)Hani Qattan 5404 Cedar Creek Houston, TX 77056Investment Vehicle : Fielding Holdings Limited Commitment : US$2,000,000Dear Mr. Qattan,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Fielding Holdings Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (33) 1 47 20 00 07 Total Number of Pages : 7 (including this page)Elie Chkeiban 42, Rue de Bassano Paris F-75008 FranceInvestment Vehicle : Financial Investments Corp. LTD. Commitment : US$2,000,000Dear Mr. Chkeiban,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Financial Investments Corp. LTD. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (44) 1481 711 354 Total Number of Pages : 7 (including this page)David Dickens P.O. Box 199 Victory House, Le Truchot Guernsey GY1 4GQ Channel Islands, UKInvestment Vehicle : Financial Investments Corp. LTD. Commitment : US$2,000,000Dear Mr. Dickens,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Financial Investments Corp. LTD. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 41-22-310-71-30 Total Number of Pages : 7 (including this page)Mazen Zein 86 Rue du Rhone P.O. Box 3667 1211 Geneve 3 SWITZERLANDInvestment Vehicle : Financiere SBA (Suisse) S.A. Commitment : US$2,850,000Dear Mr. Zein,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$58,079 Investment in Sight Resources Corporation US$59,037 ------Total Funding Obligation US$117,116 Your total funding obligation of US$117,116 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Financiere SBA (Suisse) S.A. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 41-22-310-71-30 Total Number of Pages : 7 (including this page)Ali Janoudi 86, Rue du Rhone P.O. Box 3667 1211 Geneve 3 SWITZERLANDInvestment Vehicle : Financiere SBA (Suisse) S.A. Commitment : US$2,850,000Dear Mr. Janoudi,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$58,079 Investment in Sight Resources Corporation US$59,037 ------Total Funding Obligation US$117,116 Your total funding obligation of US$117,116 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Financiere SBA (Suisse) S.A. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (41) 22 780 24 36 Total Number of Pages : 7 (including this page)Gerald J. Meyer 7, Rue de la Bergère Meyrin CH-1217 SwitzerlandInvestment Vehicle : Firmenich International SA Commitment : US$5,000,000Dear Mr. Meyer,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Firmenich International SA Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (966) 1 442 2203 Total Number of Pages : 7 (including this page)Abdul-Amir Badrud-Din P.O. Box 930 Riyadh 11421 Saudi ArabiaInvestment Vehicle : H.R.H. Prince Talal Bin Abdul-Aziz Commitment : US$1,000,000Dear Dr. Badrud-Din,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: H.R.H. Prince Talal Bin Abdul-Aziz Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 75 237 65 81 Total Number of Pages : 7 (including this page)Urs Eichenberger P.O. Box 237 Vaduz/Liechtenstein FL-9490Investment Vehicle : Hilmarton Investment S.A., Panama Commitment : US$10,000,000Dear Mr. Eichenberger,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$203,788 Investment in Sight Resources Corporation US$207,147 ------Total Funding Obligation US$410,935 Your total funding obligation of US$410,935 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Hilmarton Investment S.A., Panama Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (974) 446 640 Total Number of Pages : 7 (including this page)Jassim M. Jaidah P.O. Box 150 Dohar Arabian Gulf C R 44 State of QatarInvestment Vehicle : Jaidah Motors & Trading Company Commitment : US$5,000,000Dear Mr. Jaidah,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Jaidah Motors & Trading Company Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (974) 414100 Total Number of Pages : 7 (including this page)Geoff Newnham P.O. Box 150 DOHA State of Qatar, Arabian GulfInvestment Vehicle : Jaidah Motors & Trading Company Commitment : US$5,000,000Dear Mr. Newnham,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Jaidah Motors & Trading Company Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 965 240 8802 Total Number of Pages : 7 (including this page)Adnan Al-Sultan Real Estate & Investments Dpt P.O. Box 64 Safat 13001 KuwaitInvestment Vehicle : Kuwait Investment Authority "as Agent for the Government of the State of Kuwait" Commitment : US$10,000,000Dear Dr. Al-Sultan,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$203,788 Investment in Sight Resources Corporation US$207,147 ------Total Funding Obligation US$410,935 Your total funding obligation of US$410,935 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Kuwait Investment Authority "as Agent for the Government of the State of Kuwait" Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 1 241 6356 Total Number of Pages : 7 (including this page)Mailing Schaeffner Reitergoisse 9-11 P.O. Box 131 Zurich 8027 SwitzerlandInvestment Vehicle : Libra Limited Commitment : US$5,000,000Dear Ms. Schaeffner,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Libra Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 22 317 5572 Total Number of Pages : 7 (including this page)Jean Letore 16, Quai General Guisan P.O. Box 3496 Geneva - 3 CH-1211 SwitzerlandInvestment Vehicle : Libra Limited Commitment : US$5,000,000Dear Mr. Letore,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Libra Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 1(561) 338-7145 Total Number of Pages : 7 (including this page)Felix A. Smolka 701 Sanctuary Drive Boca Raton, FL 33431Investment Vehicle : Milestone Development Corporation Commitment : US$1,000,000Dear Felix Smolka,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Milestone Development Corporation Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 1 224 3888 Total Number of Pages : 7 (including this page)Hans Bruderer P.O. Box 4455 Zurich 8022 SwitzerlandInvestment Vehicle : Mohamed Abdulrahman Al-Bahar Commitment : US$5,000,000Dear Mr. Bruderer,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Mohamed Abdulrahman Al-Bahar Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 22 310 0400 Total Number of Pages : 7 (including this page)David W. Huyette c/o Unifund S.A. 30, rue du Rhone Geneva 1204 SwitzerlandInvestment Vehicle : Morley Investments Limited Commitment : US$10,000,000Dear Mr. Huyette,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$203,788 Investment in Sight Resources Corporation US$207,147 ------Total Funding Obligation US$410,935 Your total funding obligation of US$410,935 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Morley Investments Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 41-22-310-0400 Total Number of Pages : 7 (including this page)Robert S. Novak 30, rue du Rhone Geneva 1204 SWITZERLANDInvestment Vehicle : Morley Investments Limited Commitment : US$10,000,000Dear Mr. Novak,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$203,788 Investment in Sight Resources Corporation US$207,147 ------Total Funding Obligation US$410,935 Your total funding obligation of US$410,935 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Morley Investments Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (41) 22 709 2930 Total Number of Pages : 7 (including this page)Christophe Lambotte 11, Rue de la Corraterie Geneva CH-1204 SwitzerlandInvestment Vehicle : Nicolaus R.A. Springer Commitment : US$2,500,000Dear Mr. Lambotte,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$50,947 Investment in Sight Resources Corporation US$51,787 ------Total Funding Obligation US$102,734 Your total funding obligation of US$102,734 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Nicolaus R.A. Springer Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 968 70 7519 Total Number of Pages : 7 (including this page)Deeptak Atal P.O. Box 3886, RUWI Postal Code 112 Sultanate of OmanInvestment Vehicle : Oman International Development & Investment Co. SAOG Commitment : US$2,800,000Dear Mr. Atal,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$57,061 Investment in Sight Resources Corporation US$58,001 ------Total Funding Obligation US$115,062 Your total funding obligation of US$115,062 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Oman International Development & Investment Co. SAOG Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 44 171 402 6306 Total Number of Pages : 7 (including this page)Nickas G. Homsy c/o London Representative Offc 104 Lancaster Gate London W2 3NT United KingdomInvestment Vehicle : Oryx Merchant Bank Limited Commitment : US$1,500,000Dear Mr. Homsy,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$30,568 Investment in Sight Resources Corporation US$31,072 ------Total Funding Obligation US$61,640 Your total funding obligation of US$61,640 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Oryx Merchant Bank Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 22 320 5634 Total Number of Pages : 7 (including this page)Paul Jeanbart 28 Boulevard Du Pont D'Arve Geneva 1205 SwitzerlandInvestment Vehicle : Oryx Merchant Bank Limited Commitment : US$1,500,000Dear Mr. Jeanbart,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$30,568 Investment in Sight Resources Corporation US$31,072 ------Total Funding Obligation US$61,640 Your total funding obligation of US$61,640 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Oryx Merchant Bank Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 9712 272 931 Total Number of Pages : 7 (including this page)Abdulla Ismail P.O. Box 2613 Abu Dhabi United Arab EmiratesInvestment Vehicle : Pecob Enterprises, Inc. Commitment : US$1,000,000Dear Mr. Ismail,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Pecob Enterprises, Inc. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 44 171 591 0928 Total Number of Pages : 7 (including this page)Abdulla Ismail 19 Kingston House South Ennismore Gardens London SW71NF ENGLANDInvestment Vehicle : Pecob Enterprises, Inc. Commitment : US$1,000,000Dear Mr. Ismail,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Pecob Enterprises, Inc. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (41) 22 310 44 41 Total Number of Pages : 7 (including this page)Christian Wagner 12 Cours des Bastions Case Postale 3341 Geneva 3 CH-1211 SwitzerlandInvestment Vehicle : Pitsilicco LTD., B.V.I. Commitment : US$5,000,000Dear Mr. Wagner,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Pitsilicco LTD., B.V.I. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 9662 665 9664 Total Number of Pages : 7 (including this page)Farid Al-Azem Abdul Aziz Bldg P.O. Box 12679 Palestine Road West Jeddah 21483 Saudi ArabiaInvestment Vehicle : PYX Company Limited Commitment : US$1,000,000Dear Mr. Al-Azem,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: PYX Company Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 44 1 71 499 8949 Total Number of Pages : 7 (including this page)Nezhet Tayeb c/o Redshare Investments Ltd 29 Curzon Street London W1Y 7AE United KingdomInvestment Vehicle : PYX Company Limited Commitment : US$1,000,000Dear Mr. Tayeb,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: PYX Company Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 44 1481 712 324 Total Number of Pages : 7 (including this page)Graham Maxi Rue du Pre St. Peter Port Gurensey GY1 1LU Channel IslandsInvestment Vehicle : Republic New York International Trust Company Limited Commitment : US$11,000,000Dear Mr. Maxi,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$224,166 Investment in Sight Resources Corporation US$227,861 ------Total Funding Obligation US$452,027 Your total funding obligation of US$452,027 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Republic New York International Trust Company Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (968) 605 491 Total Number of Pages : 7 (including this page)A. V. Babu P.O. Box 533 Muscat PC 113 Sultanate of OmanInvestment Vehicle : Sheik Salim Saeed Hamed Al Fannah Hal Araimi & Mr. Mohammed Rashid Abdullah Al Fanna H Al Araimi Commitment : US$1,500,000Dear Mr. Babu,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$30,568 Investment in Sight Resources Corporation US$31,072 ------Total Funding Obligation US$61,640 Your total funding obligation of US$61,640 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Sheik Salim Saeed Hamed Al Fannah Hal Araimi & Mr. Mohammed Rashid Abdullah Al Fanna H Al Araimi Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (41) 22 310 44 41 Total Number of Pages : 7 (including this page)Christian Wagner 12 Cours des Bastions Case Postale 3341 Geneva 3 CH-1211 SwitzerlandInvestment Vehicle : Sherwood Finance LTD. Commitment : US$2,500,000Dear Mr. Wagner,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$50,947 Investment in Sight Resources Corporation US$51,787 ------Total Funding Obligation US$102,734 Your total funding obligation of US$102,734 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Sherwood Finance LTD. Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 65 284 4316 Total Number of Pages : 7 (including this page)Patrick Lee Swee Ching 540 Airport Road, Paya Lebar Singapore 539938 SingaporeInvestment Vehicle : Singapore Technologies Aerospace LTD Commitment : US$1,000,000Dear Mr. Ching,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Singapore Technologies Aerospace LTD Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 65 284 4316 Total Number of Pages : 7 (including this page)Yong Siew Hua 540 Airport Road, Paya Lebar Singapore 539938 SingaporeInvestment Vehicle : Singapore Technologies Aerospace LTD Commitment : US$1,000,000Dear Mr. Hua,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Singapore Technologies Aerospace LTD Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 65 777 1878 Total Number of Pages : 7 (including this page)Frankie Tan 77 Science Park Drive, #02-15 Cintech III Singapore Science Park Singapore 118256 SingaporeInvestment Vehicle : Singapore Technologies PTE LTD Commitment : US$1,000,000Dear Mr. Tan,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Singapore Technologies PTE LTD Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 65 777 1878 Total Number of Pages : 7 (including this page)Pang Seow Lan 77 Science Park Drive, #02-15 Cintech III Singapore Science Park Singapore 118256 SingaporeInvestment Vehicle : Singapore Technologies PTE LTD Commitment : US$1,000,000Dear Mr. Lan,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$20,379 Investment in Sight Resources Corporation US$20,715 ------Total Funding Obligation US$41,094 Your total funding obligation of US$41,094 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Singapore Technologies PTE LTD Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 22 310 59 62 Total Number of Pages : 7 (including this page)Philippe V. Thevenaz 5, Cours des Bastions Geneva 1205 SwitzerlandInvestment Vehicle : Sirac Commitment : US$1,500,000Dear Mr. Thevenaz,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$30,568 Investment in Sight Resources Corporation US$31,072 ------Total Funding Obligation US$61,640 Your total funding obligation of US$61,640 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Sirac Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 22 310 59 62 Total Number of Pages : 7 (including this page)Soremat S.A. c/o Soremat S.A. B.P. 175 Geneva 12 1211 SwitzerlandInvestment Vehicle : Sirac Commitment : US$1,500,000Dear Soremat S.A.,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$30,568 Investment in Sight Resources Corporation US$31,072 ------Total Funding Obligation US$61,640 Your total funding obligation of US$61,640 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Sirac Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 1-212-265-5826 Total Number of Pages : 7 (including this page)Malcolm Travelstead 630 5th Avenue NEW YORK, NY 10111Investment Vehicle : Stone Corporation Commitment : US$3,000,000Dear Mr. Travelstead,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$61,136 Investment in Sight Resources Corporation US$62,144 ------Total Funding Obligation US$123,280 Your total funding obligation of US$123,280 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Stone Corporation Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 961-1-602718 Total Number of Pages : 7 (including this page)Sultan Akram Ojjeh P.O. Box 167151 Beirut LebanonInvestment Vehicle : Sultan Akram Ojjeh Commitment : US$2,000,000Dear Sultan Akram Ojjeh,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Sultan Akram Ojjeh Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 1 285 2759 Total Number of Pages : 7 (including this page)Caspar Benz Bythenquai 50/60 Zurich CH-8022 SwitzerlandInvestment Vehicle : Swiss Re Partnership Holding AG Commitment : US$5,000,000Dear Mr. Benz,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Swiss Re Partnership Holding AG Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (0171) 409 7215 Total Number of Pages : 7 (including this page)Akber Moawalla 19 Berkeley Street London W1X 5AE EnglandInvestment Vehicle : Tinsel Limited Commitment : US$7,500,000Dear Mr. Moawalla,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$152,841 Investment in Sight Resources Corporation US$155,360 ------Total Funding Obligation US$308,201 Your total funding obligation of US$308,201 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Tinsel Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 011 41 22 707 6799 Total Number of Pages : 7 (including this page)David Chamberlain 2, rue de Jargonnant Case postale 6421 Geneva 6 1211 SwitzerlandInvestment Vehicle : Unigestion Holding Commitment : US$7,500,000Dear Mr. Chamberlain,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$152,841 Investment in Sight Resources Corporation US$155,360 ------Total Funding Obligation US$308,201 Your total funding obligation of US$308,201 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Unigestion Holding Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : 01534-36215 Total Number of Pages : 7 (including this page)John Hollins P.O. Box 546 / Sir Walter Raleigh House 48-50 The Esplanade St. Helier, Jersey JE4 8XY Channel IslandsInvestment Vehicle : Verity Limited Commitment : US$2,000,000Dear Mr. Hollins,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$40,758 Investment in Sight Resources Corporation US$41,429 ------Total Funding Obligation US$82,187 Your total funding obligation of US$82,187 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Verity Limited Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (852) 2840 0789 Total Number of Pages : 7 (including this page)Katherine Tsui c/o 37/F., Wu Chung House 213 Queen's Road East Wanchai HongKongInvestment Vehicle : Wingoal International Corporation Commitment : US$5,000,000Dear Mrs. Tsui,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$101,894 Investment in Sight Resources Corporation US$103,573 ------Total Funding Obligation US$205,467 Your total funding obligation of US$205,467 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Wingoal International Corporation Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner TCG VENTURES LIMITED KIRK HOUSE, P.O. BOX 1100-G, GRAND CAYMAN, B.W.I. TELEPHONE (345) 949-7212 TELEFAX (345) 949-0993 TELEX CP422613 October 1997VIA FAX TO : (968) 796 921 Total Number of Pages : 7 (including this page)Hani M. Al-Zubair P.O. Box 1127 Ruwi Muscat 112 Sultanate of OmanInvestment Vehicle : Zent International LTD Commitment : US$500,000Dear Mr. Al-Zubair,We are pleased to notify you of the proposed investments of Carlyle Venture Partners, L.P. and its investing affiliates (collectively the “Fund”) in Pacific Telecom Cable, Inc. and Sight Resources Corporation. The Fund, along with certain parallel partnerships, are contributing a $5 million deposit toward an equity investment in Pacific Telecom Cable, Inc. as well as a $5,082,417 equity investment in Sight Resources Corporation. Detailed descriptions of these transactions are provided with this letter.Pursuant to Section 3.1(a) of the Agreement of Limited Partnership dated 7 May 1997 (the “Agreement”), TCG Ventures Limited, as General Partner, is making a capital call for a Bridge Investment (as defined in the Agreement) in Pacific Telecom Cable, Inc. and an investment in Sight Resources Corporation. Funding ObligationThe following summarizes your funding obligation for this capital call:Bridge Investment in Pacific Telecom Cable, Inc. US$10,189 Investment in Sight Resources Corporation US$10,357 ------Total Funding Obligation US$20,546 Your total funding obligation of US$20,546 (please include any wiring fees with your payment) must be sent to us according to the following wiring instructions no later than 24 October 1997:Chase Manhattan Bank N.A. New York ABA 021000021 For account Bank Julius Baer & Co. Ltd. New York account number 544 777 037 For onward credit Carlyle Venture Partners L.P.Ref: Zent International LTD Attn: Peter W.C. GouldenAdditional InformationThe attachment to this letter contains an overview of Pacific Telecom Cable, Inc. and Sight Resources Corporation. If you have any questions regarding the investment in Pacific Telecom Cable, Inc. please contact Brooke Coburn at (202) 347-2626. If you have any questions regarding the investment in Sight Resources Corporation please contact Ryan Schwarz at (202) 347-2626. If you have any questions regarding this capital call notice please contact Patty Watson at (202) 626-1277 or Megan McGovern at (202) 626-1275. Thank you for the faith you have placed in us and we appreciate your prompt attention in addressing this notice.Yours faithfully,TCG Ventures LimitedTCG Ventures Limited General Partner

Kirk House, P.O. Box 1100-G, Grand Cayman, B.W.I

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