DOCSLIB.ORG

NI 43-101 Technical Report on the Preliminary Economic Assessment of the Karowe Diamond Mine Underground Project

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
NI 43-101 Technical Report on the Preliminary Economic Assessment of the Karowe Diamond Mine Underground Project NI 43-101 Technical Report on the Preliminary Economic Assessment of the Karowe Diamond Mine Underground Project Effective Date: 31st October 2017 Report Date: 27th November 2017 Prepared For: Lucara Diamond Corp. Suite 2000 885 West Georgia Street Vancouver, BC V6C 3E8 Canada Prepared by: Royal HaskoningDHV Building No 5 Country Club Estate 21 Woodlands Drive Woodmead 2191 Qualified Persons Mr. Guillaume Johannes Oberholzer Pr.Eng, SMSAIEE Royal HaskoningDHV BSc Honours (Min. Tech.), Mr. Norman George Carroll Blackham Royal HaskoningDHV Fellow SAIMM Mr. John Anthony Cox Pr.Eng, ECSA, Fellow SAIMM Royal HaskoningDHV Mr. Jody John Thompson B.Eng, Fellow SAIMM Royal HaskoningDHV BSc Honours, MSc Dr. Kym Lesley Morton KLM Consulting Hydrogeology, PhD, MBA BA Honours, Dr. Markus Tilman Reichardt PhD in Restoration Ecology/ Reichardt & Reichardt Rehabilitation Dr. Tom Nowicki PhD. P.Geo Mineral Services Canada Dr. John Armstrong PhD. P.Geo Lucara Diamond Corporation Table of Contents 1 Summary 11 1.1 Introduction 11 1.2 Property Location and Description 11 1.3 Geology 13 1.4 Mineral Resources 15 1.5 Mineral Reserves 16 1.6 Geotechnical 16 1.7 Hydrogeology 17 1.8 Mining 17 1.9 Processing 20 1.10 Capital and Operating Costs 20 1.10.1 Capital cost estimates 20 1.10.2 Operating cost estimates 21 1.11 Economic Analysis 22 1.12 Conclusions and Recommendations 23 2 Introduction 25 2.1 Scope of Work 25 2.2 Previous Technical Reports 25 2.3 Qualified Persons 26 2.4 Principal Sources of Information 28 3 Reliance on Other Experts 29 4 Property Description and Location 30 4.1 Overview of Botswana 30 4.1.1 Types of mineral licence in Botswana 30 4.1.2 Fiscal regime of Botswana 30 4.2 Issuer’s Title, Location and Demarcation of Mining Licence 30 4.3 Permitting Rights and Agreements Relating to Karowe Mine 34 4.3.1 Surface rights 34 4.3.2 Taxes and royalties 34 4.3.3 Obligations 34 4.3.4 Environmental liabilities 34 4.3.5 Permits 34 5 Accessibility, Climate, Local Resources, Infrastructure and Physiography 37 5.1 Accessibility 37 5.2 Access 37 5.3 Climate 37 5.4 Infrastructure and Local Resources 38 6 History 39 6.1 Early Work: De Beers Prospecting Botswana (Pty) Ltd and De Beers Botswana Mining Company (Pty) Ltd 39 Karowe Underground PEA Royal HaskoningDHV 2 6.2 Debswana Diamond Company (Pty) Ltd. PL17/86 39 6.3 De Beers Prospecting Botswana (Pty) Ltd, PL1/97 39 6.4 De Beers Prospecting Botswana (Pty) Ltd, PL13/2000 40 6.5 The Boteti Joint Venture 40 6.6 Boteti Exploration (Pty) Ltd and Boteti Mining (Pty) Ltd 40 6.6.1 Lucara Diamond Corporation 40 7 Geological Setting and Mineralisation 42 7.1 Local and Regional Geology 42 7.2 Property Geology 43 7.3 Kimberlite Geology 44 7.3.1 Calcretised kimberlite (CKIMB) 47 7.3.2 Weathered kimberlite (WK) 47 7.3.3 Basalt breccia (BBX/KBBX) 47 7.3.4 North Lobe Kimberlite Units 48 7.3.5 Centre Lobe kimberlite units 48 7.3.6 South Lobe kimberlite units 48 8 Deposit Types 50 9 Exploration 52 9.1 Exploration Approach and Methodology 52 9.2 Geophysical Surveys 53 10 Drilling 54 11 Sample Preparation, Analyses and Security 56 11.1 Reverse Circulation, 12¼" Drilling 56 11.2 Reverse Flood, 12¼" Drilling 56 11.3 Trench Samples 57 11.4 Diamond Recovery 57 12 Data Verification 59 12.1 Basis for Geological Model 59 12.2 Drill core Logs 60 12.3 Internal Dilution 60 12.4 Geology Model 60 12.5 Bulk Density Data 61 12.6 LDD Grade Data 61 12.7 Production Data 61 12.7.1 Grade control data 61 12.7.2 Process data 61 12.7.3 Diamond data 62 13 Mineral Processing and Metallurgical Testwork 63 13.1 Comminution Testwork 63 13.2 XRT Testwork 63 Karowe Underground PEA Royal HaskoningDHV 3 13.3 Diamond Breakage Analysis 63 13.4 Further Testwork 63 14 Mineral Resource Estimates 64 14.1 Geology Modelling 65 14.1.1 Geology model update and volume estimates 65 14.1.2 Geological continuity 70 14.1.3 Confidence level of geology model 72 14.1.4 Block model 73 14.2 Bulk Density and Tonnage 74 14.2.1 Bulk density data 74 14.2.2 Bulk density estimation approach 75 14.2.3 Confidence level of bulk density / tonnage model 77 14.3 Diamond Grade 80 14.3.1 LDD sample data 80 14.3.2 Grade estimation approach 83 14.3.3 Adjustment for recoverable grade 87 14.3.4 Confidence level of grade estimates 90 14.4 Size Frequency Distribution (SFD) 90 14.4.1 SFD continuity 92 14.5 Diamond Value 94 14.6 Mineral Resource Statement 95 15 Mineral Reserve Estimates 97 16 Mining Methods 98 16.1 Geotechnical Assessment 98 16.1.1 Data sources and previous study work 98 16.1.2 3D Geological model and geotechnical setting 99 16.1.3 Geotechnical data from the 2016 / 2017 drilling programme 107 16.1.4 Rock strength and known rockmass parameters 109 16.1.5 Conclusion with regards to the geotechnical database 110 16.1.6 Geotechnical mine design considerations 111 16.1.7 Mine support 111 16.1.8 Gap analysis 112 16.1.9 Forward work plan 113 16.2 Hydrogeology 115 16.2.1 Regional and local hydrogeology 115 16.2.2 Dewatering of the current open pit 118 16.2.3 Dewatering to support open pit and underground 122 16.2.4 Estimate of inflows to the proposed underground mine 126 16.2.5 Recommendations 128 16.2.6 Proposed work for PFS 130 16.3 Open Pit Mining 132 16.3.1 Geological block model used in whittle 132 16.3.2 Whittle runs 133 16.3.3 Observations from the whittle runs 135 16.4 Underground Mining 136 16.4.1 Background 136 Karowe Underground PEA Royal HaskoningDHV 4 16.4.2 Mining method selection 137 16.4.3 Mine design 138 16.4.4 Underground primary access 141 16.4.5 Secondary access 141 16.4.6 Mine planning 141 16.4.7 EPS schedule 143 16.4.8 Draw control strategy and procedure 145 16.4.9 Ground water ingress mitigation 145 16.4.10 Mechanised equipment fleet 145 16.5 Ventilation 146 16.5.1 Introduction 146 16.5.2 Manual calculations for mobile equipment and required ventilation 146 16.5.3 Modelling 147 16.5.4 Considerations 149 16.5.5 Conclusion 150 17 Recovery Methods 151 17.1 Mineral Processing Plant 151 17.1.1 Flowsheet and process description 151 17.1.2 Recommendations 152 18 Project Infrastructure 153 18.1 Surface Infrastructure 153 18.1.1 Roads and air access 153 18.1.2 Portals 153 18.1.3 Workshops 153 18.1.4 Water handling 153 18.1.5 Change house and crush 154 18.1.6 Contractors area 154 18.1.7 Bulk power supply 154 18.2 Underground Infrastructure 154 18.2.1 Underground dewatering 154 18.2.2 Vehicle service and refuelling bays 154 18.2.3 Power and communication 154 18.3 Tailings Storage Facility 155 18.3.1 Background 155 18.3.2 Design Criteria 155 18.3.3 Layout 156 18.3.4 Methodology 156 18.3.5 Infrastructure 158 18.3.6 Cost estimation 159 19 Market Studies and Contracts 160 19.1 Diamond sales 160 19.2 Client Base 160 19.3 Rough Diamond Market Outlook 160 20 Environmental Studies, Permitting and Social or Community Impact 162 20.1 Environmental Studies Completed to Date 162 20.2 Environmental Management 162 Karowe Underground PEA Royal HaskoningDHV 5 20.3 Water Usage and Management 163 20.4 Slimes Dam 163 20.5 Waste Rock Dump 163 20.6 Social and Community 164 20.7 Mine Closure 164 20.8 Recommendations 164 21 Capital and Operating Costs 166 21.1 Capital Cost Estimates 166 21.1.1 Key capital cost estimation parameters 169 21.1.2 Basis of capital estimate 169 21.1.3 Capital cost estimate exclusions 170 21.2 Operating Costs 170 21.2.1 Basis for operating cost estimates 171 22 Economic Analysis 173 22.1 Summary of Results 173 22.2 Key Assumptions and Input Parameters 173 22.3 Mine Production 173 22.4 Taxes, Royalties and Other Interests 178 22.5 Sensitivity Analysis 179 22.6 Results 179 23 Adjacent Properties 180 23.1 Orapa Mine 180 23.2 Letlhakane Mine 181 23.3 Damtshaa Mine 181 23.4 Firestone Diamonds BK11 181 24 Other Relevant Data and Information 183 25 Interpretation and Conclusions 184 25.1 Mineral Resource Estimate 184 25.2 Conclusions 184 25.3 Risks 186 25.4 Opportunities 188 26 Recommendations 189 26.1 Legal and Tenure 189 26.2 Resource 189 26.3 Geotechnical 189 26.4 Geohydrology 189 26.5 Mining 189 26.6 Processing and Tailings Storage Facility 190 26.7 Infrastructure 190 26.8 Environmental, Social and Community 191 Karowe Underground PEA Royal HaskoningDHV 6 26.9 Costs 191 27 References 192 Appendix 1 – Glossary of Terms Appendix 2 - Certificates of Qualified Persons List of Figures Figure 1.1 - Locality Map of the Karowe Diamond Mine ............................................................................................... 12 Figure 1.2 - Geological Model of AK6 Kimberlite .......................................................................................................... 14 Figure 1.3 - NPV Sensitivity .......................................................................................................................................... 23 Figure 4.1 - Locality Map .............................................................................................................................................. 32 Figure 4.2 - Karowe Mine and other diamond mines in the vicinity ............................................................................... 33 Figure 4.3 - Aerial photograph of the Karowe Mine ......................................................................................................
Load more

Recommended publications
  • Tsodilo Resources Limited Annual Report 2014  OUR VISION
    Tsodilo Resources Limited Annual Report 2014 OUR VISION MISSION STATEMENT We recognize that every community is unique and respect the cultural and historical To build a leading African-focused mineral exploration, perspectives and rights of those affected by our operations production and development company. We provide a rewarding and meaningful Values: livelihood to our employees. We provide suitable training opportunities and resources A healthy and safe work environment are made available to employees to assist them Entrepreneurial spirit in performing their duties. Creation of shareholder value Create positive economic and social impact on We seek to provide employment, business and local communities where we operate economic opportunities for local communities Seek value opportunities from our existing operations and new projects. Exploration of additional promising prospects Production of ore bodies with economically We maintain high standards of corporate viable assets governance, ethics and honesty in all of our dealings, and operate in compliance both with Canadian stock exchange listing and disclosure CORPORATE COMMITMENT requirements and the local laws wherever we work. Tsodilo Resources Limited continues to progress as a responsible corporation through our field practices, management systems in Environment, Health and Safety, We engage with our industry peers, contributions to the communities where we operate, and associations, governments, non-governmental our commitment to ongoing stakeholder engagement. organizations, and civil society to contribute to Corporate responsibility is increasingly central to our best practice development and track evolving strategic and operational thinking. We cannot sustain global standards good financial and operational performance without simultaneously achieving our objectives in health and On behalf of the board, safety, environmental stewardship, human resource development, and community investment.
    [Show full text]
  • 2018 Technical Report for the Karowe Mine: Updated Mineral Resource Estimate
    2018 Technical Report for the Karowe Mine: Updated Mineral Resource Estimate Report prepared for: Lucara Diamond Corp. 885 W Georgia Street Vancouver, BC V6C 3E8, Canada By: Mineral Services Canada Inc. 501‐88 Lonsdale Avenue North Vancouver, BC V7M 2E6 Report date: 9 August 2018 Effective date: 7 August 2018 Karowe Mine 2018 Resource Update Page ii Table of Contents Table of Contents .................................................................................................................................... ii List of Tables .......................................................................................................................................... vi List of Figures ........................................................................................................................................ vii List of Abbreviations .............................................................................................................................. ix 1. Executive summary ......................................................................................................................... 1 1.1 Introduction ............................................................................................................................. 1 1.2 Property location and description ........................................................................................... 1 1.3 Geology ................................................................................................................................... 3 1.4
    [Show full text]
  • Why Buyers Shunned the World's Largest Diamond
    WHY BUYERS SHUNNED THE WORLD’S LARGEST DIAMOND At 1,109 carats, big as a tennis ball, the world’s largest uncut diamond was expected to shatter records at a June Sotheby’s auction. How did the dazzling stone go unsold? An exclusive reveals what went wrong. BY MATTHEW HART AUGUST 5, 2016 5:00 AM BUT IS IT ART? The 1,109-carat Lesedi La Rona diamond, on view at Sotheby’s in New York in May. By Justin Lane/EPA/Redux. The assassination of William Lamb began at 6:45 P.M. on a soft June night. Spectators packed the killing ground, a sales room on the second floor of Sotheby’s, in London. The victim wore the raiment of his caste, a crisp tuxedo. A few yards in front of where he sat, blazing in its spotlight on a plinth beside the auctioneer, was a 1,109-carat top-color white diamond called Lesedi La Rona, the vessel of Lamb’s hopes for a bold new way to sell rough diamonds. His wife had bought him new shoes for the occasion, the toe caps spattered with faux gems. He wore socks patterned with jaunty slashes of color. The Lesedi diamond opened at $50 million and struggled from the start. Fifty-one million dollars, someone offered, and too long after that, $52 million. This was not the scenario that Lamb had imagined in his dreams. In that version, a forest of bidding paddles would have shot up in the room as eager buyers drove the price north of $100 million.
    [Show full text]
  • Escaping from the Commodity Dependence Trap Through Technology and Innovation
    UNITED NATIONS CONFERENCE ON TRADE AND DEVELOPMENT COMMODITIES & DEVELOPMENT REPORT 2021 Escaping from the Commodity Dependence Trap through Technology and Innovation Geneva, 2021 © 2021, United Nations All rights reserved worldwide Requests to reproduce excerpts or to photocopy should be addressed to the Copyright Clearance Center at copyright.com. All other queries on rights and licences, including subsidiary rights, should be addressed to: United Nations Publications 405 East 42nd Street New York, New York 10017 United States of America Email: [email protected] Website: https://shop.un.org/ The designations employed and the presentation of material on any map in this work do not imply the expression of any opinion whatsoever on the part of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Mention of any firm or licensed process does not imply the endorsement of the United Nations. United Nations publication issued by the United Nations Conference on Trade and Development. UNCTAD/DITC/COM/2021/1 ISBN: 978-92-1-1130188 eISBN: 978-92-1-403046-1 ISSN: 2519-8580 eISSN: 2524-2709 Sales No.: E.21.II.D.14 COMMODITIES & DEVELOPMENT Escaping from the Commodity Dependence Trap through Technology and Innovation REPORT 2021 Acknowledgements The Commodities and Development Report 2021: Escaping from the Commodity Dependence Trap through Technology and Innovation was prepared by Janvier D. Nkurunziza (team leader), Stefan Csordás and Marco Fugazza, from the Commodities Branch of the Division on International Trade and Commodities of the United Nations Conference on Trade and Development (UNCTAD).
    [Show full text]
  • THE WOMEN SHAKING up DIAMONDS and INDUSTRY NORMS with Eira Thomas, CEO and Naseem Lahri, Botswana MD, Lucara Diamond
    is proud to present CELEBRATING STRONG WOMEN IN JEWELRY EPISODE I THE WOMEN SHAKING UP DIAMONDS AND INDUSTRY NORMS With Eira Thomas, CEO and Naseem Lahri, Botswana MD, Lucara Diamond @lucaradiamond In support of the Gem X Scholarship Fund @gemxclub Donation link: gemx.club/charity THE GEM X SCHOLARSHIP FUND Opening the World of Jewelry to More Learners We wish to support those with the greatest enthusiasm, passion and need. Gem X Scholars will receive: Educational financial assistance Complimentary Gem X membership and networking opportunities Bespoke mentorship, designed to help scholars reach their career goals Please give at www.gemx.club/charity THANK YOU FOR YOUR SUPPORT! Cautionary Statement Forward‐looking information Certain of the statements made and contained herein and elsewhere constitute forward- the growth of the Clara platform, the timing and frequency of sales on the Clara looking statements as defined in applicable securities laws. Generally, these forward- Platform, and the quantum of and timing for participation of third parties on the Clara looking statements can be identified by the use of forward-looking terminology such as platform; expectations regarding the need to raise capital and its availability; possible "expects", "anticipates", "believes", "intends", "estimates", "potential", "possible" and similar impacts of disputes or litigation; and other risks and uncertainties described under the expressions, or statements that events, conditions or results "will", "may", "could" or "should" heading “Risks and
    [Show full text]
  • Investment Policy Review of Botswana
    Printed at United Nations, Geneva United Nations publication GE.03-50499–March 2003–3,400 Sales No. E.03.II.D.1 UNCTAD/ITE/IPC/MISC.10 ISBN 92-1-112572-3 UNCTAD/ITE/IPC/Misc. 10 United Nations Conference on Trade and Development Investment Policy Review Botswana UNITED NATIONS New York and Geneva, 2003 Investment Policy Review of Botswana Note UNCTAD serves as the focal point within the United Nations Secretariat for all matters related to foreign direct investment and transnational corporations. In the past, the Programme on Transnational Corporations was carried out by the United Nations Centre on Transnational Corporations (1975-1992). UNCTAD’s work is carried out through intergovernmental deliberations, research and analysis, technical assistance activities, seminars, workshops and conferences. The term "country" as used in this study also refers, as appropriate, to territories or areas; the designations employed and the presentation of the material do not imply the expression of any opinion whatsoever on the part of the Secretariat of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. In addition, the designations of country groups are intended solely for statistical or analytical convenience and do not necessarily express a judgement about the stage of development reached by a particular country or area in the development process. The following symbols have been used in the tables: Two dots (..) indicate that data are not available or are not separately reported. Rows in tables have been omitted in those cases where no data are available for any of the elements in the row; A dash (-) indicates that the item is equal to zero or its value is negligible; A blank in a table indicates that the item is not applicable; A slash (/) between dates representing years, e.g.
    [Show full text]
  • Lesedi La Rona & Lucara
    Lesedi La Rona & Lucara Big Rocks, Big Dreams and Small Companies On the eve of the highly anticipated auction at Sotheby’s London of the largest gem-quality rough diamond in the world – the 1,109-carat Lesedi La Rona – the Diamond Loupe brings you our in- depth discussion with Lucara Diamond CEO Wil- liam Lamb. During the Antwerp leg of the Lesedi’s world tour, we sat down with William Lamb to dis- cuss Lucara’s management strategy, decision-mak- ing process, use of innovative technology and, of course, the magnificent Lesedi La Rona. What lies in store for Lucara’s historic stone? The Karowe Mine, former owner De Beers’ vs. current owner Lucara’s approach It is all about scale and approach. De Beers sold the mine because it did not fit with their large-mine process. De Beers would call it ‘elephant hunting’. They are out there looking for mines that would have 30 to 40-year life spans, and would implement a more ‘Rolls Royce’ type technical solution. This type of sheer volume involves much more cost- ly capital expenditure, and is precisely why we finally relinquished the Mothae Mine. Believe me, we looked at it six ways of Sunday, at all the alternatives … small scale, large scale, new technology, old technology … and we couldn’t get it to work. Whereas a number of junior companies like us are now implementing what we call a ‘fit-for purpose’ solution that is not a Rolls Royce, but a sort of VW-type solution that can extract value from smaller deposits that the majors would not consider economical.
    [Show full text]
  • Apr- the Lesedi La Rona Diamond
    Learning Series: The Wonder and Natural Beauty of Rocks The Saga of the Lesedi la Rona Diamond The 1,109-carat uncut Lesedi la Rona diamond is the largest gem-quality diamond discovered in more than century and the second-largest diamond ever found. It is exceeded in size only by the 3,106-carat Cullinan found in South Africa in 1905; itself cut into over 100 pieces, including nine numbered stones—among them the Great Star of Africa (530 carats) which has adorned the Royal Scepter of the British Crown Jewels since 1910. The size of a tennis ball, the Lesedi la Rona, was recovered in Botswana in November 2015 at the Karowe mine operated by the Canada-based firm, Lucara Diamond Corporation. It weighs nearly half a pound (227 grams), measures 65 mm by 56 mm by 40 mm and is believed to be between 2.5 billion and 3 billion years old. Classed as a Type IIA diamond, it is among the most valued and purest type of diamonds; less than 2% of all gem diamonds are Type IIA. Scientifically speaking, Type IIA stones are almost pure carbon. They contain no significant amount of nitrogen in the crystal lattice (which imparts a yellowish hue) and often show extraordinary optical transparency; both are true of the Lesedi la Rona. What’s in a Name? Following the diamond’s discovery, the CEO of Lucara launched a competition to name the stone – open only to Botswana citizens. In addition to the honor of having their suggestion selected from among all the entries, the winner would take home P25,000 (about $2,170).
    [Show full text]
  • 2019 Sustainability Report
    2019 SUSTAINABILITY REPORT MAKING DIAMOND HISTORY 3 LUCARA DIAMOND CORP 5 Message from the President & CEO 8 Governance & Ethical Conduct 11 Product Stewardship 12 Economic Performance 14 LUCARA BOTSWANA 15 Message from the Managing Director 16 Message from the General Manager 18 Governance & Assurance 19 Policies & Business Continuity 21 Operations 25 Development & Exploration 26 Our People 30 Supply Chain 31 Health, Safety & Wellness 36 Partnerships & Engagement 39 Investing In Today & The Future 42 Environmental Performance 53 CLARA DIAMOND SOLUTIONS 54 Supply Chain Innovations 54 First Year of Operation 55 Marketing Supply & Demand 55 Customer Privacy 55 Intellectual Property 55 Ensuring Provenance 56 MATERIAL TOPICS 58 ASSURANCE REPORT 61 CAUTIONARY STATEMENT Left image: workers at the conveyor belt Cover images; Top: Aerial view of Karowe Mine; Middle: Farmworker at Mokubilo community farm; Bottom: Mining activities in Karowe Mine CORPORATE PROFILE Lucara Diamond Corp. (Lucara) is a Canadian diamond mining company headquartered in Vancouver. We are listed on the Toronto Stock Exchange (TSX), Nasdaq Stockholm and the Botswana Stock Exchange under the symbol "LUC". Lucara is certified under the Responsible Jewellery Council Code of Practices, complies with the Kimberley Process, is a Participant of the UN Global Compact, and supports the UN Sustainable Development Goals (SDGs). Lucara is a member of the Lundin Group of Companies. Lucara Botswana (Pty) Ltd. (Lucara Botswana) is our wholly owned subsidiary. We operate the Karowe Diamond Mine (Karowe) in Botswana. This open pit View of conveyors and processing plants at Karowe mine started operations in 2012, has current mineable reserves to 2026, and potential for underground mining to at least 2040.
    [Show full text]
  • Lucara Diamond Corp. Full Year 2015 Results Cautionary Statement 2
    Lucara Diamond Corp. Full Year 2015 Results Cautionary statement 2 Forward‐looking information • This investor presentation contains forward‐looking statements and information as defined in applicable securities laws including: the estimates of the Company’s mineral reserve and resources; estimates of the Company’s production and sales volumes, revenue for the Karowe Mine; exploration and development plans and objectives, production costs, exploration and development expenditures. Generally, these forward‐looking statements can be identified by the use of forward‐looking terminology such as “expects”, “anticipates”, “believes”, “intends”, “estimates”,“potential”, “possible” and similar expressions, or statements that events, conditions or results “will”, “may”, “could” or “should” occur or achieved. Forward‐looking statements are based on the assumptions, opinions and estimates of management as of the date such statements are made, and they are subject to a number of known and unknown risks and uncertainties which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievement expressed or implied by such forward‐looking statements. In particular, such risks include general business and economic conditions, changes in interest and foreign currency rates, the supply and demand for, deliveries of and the level and volatility of prices of rough diamonds, costs of power and diesel, acts of foreign governments and the outcome of legal proceedings, inaccurate
    [Show full text]
  • Dear BOTSFA Members
    Newsletter from Botswana Sweden Friendship Association No 3/2017 BOTSFA Dear BOTSFA members FOLLOWING THE CELEBRATIONS OF BOTSWANA 50 in September last year, botsfa has continued to be an association where friends meet. The informal-get-togethers that are held at Grappa restaurant in Stockholm attract a sizeable audience. On September 18, Mike Main, a freelance writer who lives in Gaborone and spends much of his time travelling in Botswana, made a very informative presentation entitled »Botswana Bushmen: Quo Vadis?«. This was followed by an over- night boat cruise to Åland in celebration of Botswana50+1 independence anniversary. This time, the audience was treated to a yet another thought-provoking presentation by Professor Johan Brosché of Uppsala University on factors found to contribute to the half a century of peace in Botswana. Sixty botsfa members were on the cruise, including Botswana’s Ambassador to Sweden Mr. Lameck Nthekela, Mrs. Ikanyeng Nthekela and staff of the Embassy. botsfa will continue to work on programs that provide its membership opportunities for information sharing and discussions. In this Dumela, you will read about a recently pub- lished cookbook »Taste of Botswana« by a botsfa mem- ber, Ednah Rosen, and the story of the biggest diamond, »Lesedi la Rona«, mined in Botswana and recently sold for usd 53 million, visits by botsfa’s Vice Chairperson to India and by Maru-a-Pula students to Sweden. Julia Majaha-Jartby botsfa Chairperson Welcome to BOTSFA! MEMBERSHIP FEES Plusgiro 85 10 39-8, or Bankgiro 428-6472 • Individual: SEK 175 • Family: SEK 300 (incl. children up to 15) For an update of records, please send an e-mail to [email protected] • Student: SEK 100 if you have changed contact details or are paying as a new member.
    [Show full text]
  • Evolution of the Orapa A/K1 Geology Model – Insights from Analysis of Multi-Disciplinary Datasets
    11th International Kimberlite Conference Extended Abstract No. 11IKC-4597, 2017 Evolution of the Orapa A/K1 Geology Model – Insights from Analysis of Multi-Disciplinary Datasets Kganetso Maphane Debswana, Orapa Mine, [email protected] Introduction The Cretaceous Orapa A\K1 is exposed as a bilobate kimberlite pipe with preserved crater lithofacies. The pipe is currently the biggest of all known kimberlite bodies within the Orapa Kimberlite Cluster (OKC), covering a surface area of ~118 hectares. A number of these kimberlite bodies are currently being economically exploited (e.g. Orapa A/K1, Damtshaa B/K9 & B/K11, and Letlhakane D/K1 & D/K2) or at advanced evaluation stage (e.g. A/K20). Mining activities in the Orapa area started in 1971 after discovery of the A/K1 kimberlite in 1967. Following discovery, a number of resource evaluations were conducted and subsequently five geological models generated (Table 1). These models improved with time as the geology of the pipe is exposed through mining, and as more drilling targeting deeper levels were completed. The purpose of this document is to summarise the evolution of the geological models including data input informing the models. Historical Work The initial stage of evaluation included shallow pitting to a depth of 30m for grade determination, and a limited core drilling to define the pipe shape. This work focused on the sedimentology of the preserved crater in-fill exposed in the pit and intersected by pitting and core drilling. The result of the pitting exercise was the generation of the first model for planning purposes in the late 1970’s and later updated after additional drilling and mapping in 1991.
    [Show full text]