Active Vendors Active Manufacturers and Distributors of Sealed Sources and Devices (Ordered by Vendor Name) March 02, 2010

Vendor Code Name and Address 239 P.O. Box 024202 Miami, FL 33102-5202 365 21st Century Technologies, Inc. 2900 S Highland Drive Suite 18B Las Vegas, NV 89109-1091 1227 3D, Danish Diagnostic Development A/S Dr. Neergaardsvej 5F 2970 Horsholm , ZZ Denmark 718 3M Company 6850 S. Harlem Avenue Beford Park, IL 60501 1166 3-Phase Measurement AS Sandsliasen 40, Sandsli Bergen, N-5862 Norway 114 A. Ahlstrom Osakeyhtio Postfach 1760 5450 Neuwied, Finland 159 AB Atomenergi Studsvik Sweden 1196 ABB Industrial Systems, Ltd. Finnabair Industrial Park Dundalk Co Louth, Ireland

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109 ABB, Inc. 579 Executive Campus Drive Westerville, OH 43082 106 Abbott Laboratories 1400 Sheridan Road North Chicago, IL 60064 744 AC Rochester Division of General Motors Corporation 1300 North Dort Highway, Dept. 32-27-4 Flint, MI 48556 111 Acrowood Corporation 4425 South 3rd Street Everett, WA 98206 108 Action Arms, LTD. Attn: Evan Whildin, General Manager P.O. Box 9573 Philadelphia, PA 19124 1201 Acuren Inspection, Inc. 101 Underwood Road, Building J La Porte, TX 77571 1110 ADAC UGM Medical Systems 3611 Market Street Philadelphia, PA 19104 113 Adaptive Technologies, Inc. 7845 Cessna Avenue Gaithersburg, MD 20879 1289 Advanced Care Medical 115 Hurley Road Building 3A Oxford, CT 06478 149 Advanced Detection Tech Inc. 5 Old Town Park Rd., South End Plaza, Unit 28 New Milford, CT 06776 1064 Advanced Gauging Technologies, L.L.C. 8430 Estates Court

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Plain City, OH 43064 115 Advanced Medical Systems, Inc. 121 North Eagle Street Geneva, OH 44041 1016 Advanz Measurement and Control Systems, Inc. 2800 Indian Ripple Road Dayton, OH 45440 152 Advanz-SRL 35 Agnes Street East Providence, RI 02915 1123 AEA Technology plc. Building 329 Harwell Science Park Didcot, Oxfordshire England, 117 AEG-Telefunken Corporation Route 22 - Orr Drive Somerville, NJ 08876 121 AFMOA/SGPR 110 Luke Avenue, Room 405 Bolling AFB, DC 20332-7050 120 AGAR Instrumentation, Inc. Houston, TX 119 AGFA Corporation AGFA Photo Division Manufacturing 100 Challenger Rd. Ridgefield, NJ 07060-2105 348 Agilent Technologies, Inc. Little Falls Site 2850 Centerville Road Wilmington, DE 19808-1610 796 Ai Cambridge Limited London Road Pampisford, Camabridge CB24EF United Kingdom 1139 Ai Qualitek

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London Road Pampisford, Cambridge, CB2 4EF United Kingdom 126 Air Products and Chemical, Inc. P.O. Box 538 Allentown, PA 18105 160 Air Products and Controls, Inc. DBA Apollo Fire Detectors LTD 1749 E. Highwood Pontiac, MI 48340 118 Akademie der Wissen Chafter der DDR Zentralinstitut fur Isotopen Und Strahlenforschund Bireich Strahlehguellen Und Nuklearpharmaka Rober DDR-1115 Berkin - Buch Robert-Rossb-Strasse 10 Germany 1237 All-Russian Research Institute of Automatics 10100, Moscow, Russia Central Post Office, P.O. 9 Moscow, ZZ Russian Federation 1207 All-Russian Research Institute of Automation (VNIIA) 22 Sushchevskaya ulitsa Moscow 101000 Russian Federation 700 Alnor Instrument Company 7301 North Caldwell Avenue Niles, IL 60648 124 Alpha Omega Service, Inc. 16220 Gundry Avenue Paramount, CA 90723 1314 Alpha Omega Services, Inc. 1282 Big Woods - Starks Road Vinton, LA 70668 125 Alpha-Beta-Gamma Corp.

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760 Alpha-Omega Services, Inc. 1282 Big Woods & Starks Road Edgerly, LA 70668 1106 Alpha-Omega Services, Inc. 1282 Big Woods and Starks Road Edgerly, LA 70668 132 Ambertec OY P.O. Box 58 Hannukenkuja SF-02271 ESPOO 10 H 37 Finland 131 Amdel Flemington Street Frewville SA 5063 Australia 1002 Amdel Limited 11 West Thebarton Road West Thebarton, SA 5031 Australia 1001 Amdel Limited Corporation c/o Perma-Fix Environmental Services 1940 NW 67th Place Gainesville, FL 32653 1058 American Airlines Maintenance & Engineering Center P.O. Box 582809 Tulsa, OK 74158-2809 703 American Clinical Laboratories Research and Development 10465 Roselle Street San Diego, CA 92121 127 American Duesberg Bosson, Inc. 2723 Interstate Street Charlotte, NC 28208 705 American Nuclear Products 1232 East Commercial Springfield, MO 65803

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133 American Optical Corproation P.O. Box 361 Bedford, MA 01730 134 American Scitec, Inc. 3505 Cadillac Avenue, Building J-5 Costa Mesa, CA 92626 138 Amersham Health White Lion Road Amersham Buckinghamshire, England HP79LL 140 AMP, Inc. P.O. Box 3608 Harrisburg, PA 17105 148 Anadrill, Inc. 200 Macco Boulevard Sugar Land, TX 77478 142 Analytical Instrument Development West Chester, PA 19380 147 Analytical Instruments, Ltd. London Road Pampisford, Cambridge CB2 4EF United Kingdom 1017 Analytics 1380 Seaboard Industrial Blvd. Atlanta, GA 30318 144 Anderson Effects, Inc. Mentone, CA 1243 ANSTO radiopharmaceuticals and industrials New Illawarra Road Menai NSW 2234 Australia 145 Antek Instruments, Inc 6005 North Freeway Houston, TX 77022 146 Anyl-Ray Corporation Sarasota, FL

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110 Apollo Fire Detectors Ltd. 36 Brookside Road Havant, Hampshire, POL 1JH United Kingdom 135 Applied Biosystems 850 Lincoln Center Drive Foster City, CA 94404 139 Applied Biosystems, Sweden AB Seminariegatan 30 S-170 15 Uppsala Sweden 707 Applied Research Laboratories P.O. Box 129 Sunland, CA 91040 1292 Arclin Performance Applied 15859 Dyne Drive Hayward, WI 54843 151 ARCO Chemical Company Division of Atlantic Richfield Karthaus, PA 16845 150 Arjay Sales, Inc. 3832 North Hubbard Street Milwaukee, WI 53212 1188 ATI Medical 10954-A Viafrontera San Diego, CA 92127 170 ATI, Inc. 4750 Wiley Post, Suite 110 Salt Lake City, UT 84116 161 Atlan-Tech ,Inc 1345 Hembree Road Roswell, GA 30076 1262 Atom Chem Corporation Bayshore, NY 158 Atomic Energy of Canada, Ltd. (AECL)

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344 Slater Street Ottawa, ON KQP 540 Canada 709 Atomic Products Corporation Center Moriches, NY 11934 1164 Austrailian Isotopes New Illawarra Road Lucas Heights New South Wales 2234 Australia 107 Automata,Inc. 2225 Northwest Parkway, Suite 160 Marietta, GA 30067 1090 Automation & Control Technology, Inc. 6141 Avery Road P.O. Box 3667 Dublin, OH 43016 171 Axiom Research Corporation 8601 Six Forks Road Raleigh, NC 27615 624 B.K. Sweeney Manufacturing Company Denver, CO 80201 1184 BAE Systems Info/Electronic Systems 65 Spit Brook Road P.O. Box 868 MER12-1506 Nashua, NH 03061-0868 1149 Bahia 21 Corporation 15200 Shady Grove Road Suite 202 Rockville, MD 20850 261 Baker Hughes Oilfield Operations, Inc. 10201 Westheimer Building 14 Houston, TX 77077 176 Ball Packaging Product, Inc. 1509 South Macedonia Avenue

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Muncie, IN 47302 1023 Barber-Coleman INDEW Corp. 1354 Clifford Avenue Loves Park, IL 61132 372 Barber-Colman Indev, Inc. 88 Boyd Avenue East Providence, RI 02914 1074 Bard Brachytherapy, Inc. 295 East Lies Road Carol Stream, IL 60188 178 Barneby-Cheney Company 835 North Cassady Avenue Columbus, OH 43219 180 Barry-Wehmiller Electronics 13327 U.S. 19 South Clearwater, FL 33546 1273 Bay FM 8652 Thornton Avenue Newark, CA 94560 179 BDC Electronics P.O. Box 5203 Midland, TX 79704 137 Bebig Isotopentechnik Und Umweltdiagnostik GMBH Robert-Roessle-Strasse 10 D-13125 Berlin Germany 103 Bebig Trade, Inc. 1438 Spring Leaf W. Dundee, IL 60118 183 Becker Delft N.V. Delft Netherlands 181 Beckman Coulter, Inc. 4300 North Harbor Boulevard Fullerton, CA 92835-3100

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182 Bedford Engineering Corporation (BEC) 124 South Road Bedford, MA 01730 1213 Belden Engineering 3924 Sunset Avenue Montrose, CA 91020-1840 184 Bendix Environmental and Process Instrument Division Lewisburg, WV 24901 625 Berthold Systems Berthold Systems Parkway West Ind. Park, 611 Parkway View Drive Pittsburgh, PA 15205 186 Berthold Systems, Inc. 101 Corporation Drive, Hopewell Bus. & Ind. Park Aliquippa, PA 15001 264 Berthold Technologies GmbH & Co. KG Calmbacher Strasse 22 Postfach 160 D-75312 Bad Wildbad Germany 1031 Berthold Technologies U.S.A., LLC 99 Midway Lane Oak Ridge, TN 37831 1211 Best Lighting Products 1213 Etna Parkway Etna, OH 43018 1140 Best Lighting Products, Inc. 201 East Stevens Ave. Santa Ana, CA 92707 187 Best Medical International A Division of Best Industries 7643-B Fullerton Road Springfield, VA 22153 1307 Best Theratronics, Inc. 7643 Fullerton Road

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Springfield, VA 22153 1308 Best Theratronics, Ltd. 413 March Road Ottawa, ON K2K 0E4 Canada 1115 Best Vascular, Inc. 4350 International Boulevard Norcross, GA 30093 122 Betacontrol P.O. Box 235 Towaco, NJ 07082 123 Betacontrol GmbH meB-und regeltechnik PO Box 1225 Am Weidekamp 10 D-5905 Freudenberg Germany 188 Bio-Nuclear Mearsurements, Inc. P.O. Box 445 Ipswich, MA 01438 714 Bio-Nucleonics, Inc. 1910 N.E. Miami Ct. Miami, FL 33132 713 Bio-Rad 32nd and Griffin Avenue Fullerton, CA 92634 1186 Biosources, Ltd 4 Bud Way Suite 4 Nashua, NH 03063 185 Biosources, Ltd. 4 Bud Way , Suite 4 Nashua, NH 03063 1006 Biotronik GMBH & Co. Berlin

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Germany 711 Biotronik GMBH & Company Berlin Germany 190 Biotronik Sales, Inc. 9228 Fourth Street North St. Petersburg, FL 33704 191 Bodenseewerk Perkin-Elmer & Company 77770 Uberlinger Bodensee Germany 189 Bondar-Clegg & Company, Ltd. Instrument Division 6 Bexley Place Nepean, ON K2H 8W2 Canada 175 Boulder Scientific Company 598 3rd Street Mead, CO 80542 194 Boyle Industrial Gauging Systems Ltd Burch Road North Fleet , Kent Dall 9NE United Kingdom 1315 Brachytherapy Services, Inc. 20200 Sunburst Street Chatsworth, CA 91311 196 Brandhurst , Inc 87 Sand Pit Road Danbury, CT 06810 195 Brandhurst Company, Ltd. P.O. Box 70 Buckhinghamshire, HP 12 3PS United Kingdom 1004 Bristol-Myers Squibb Company P.O. Box 191

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New Brunswick City, NJ 08903-0191 476 Bristol-Myers Squibb Medical Imaging 331 Treble Cove Road North Billerica, MA 01862 166 British Lighting Division 710 British Lighting Preventer Leicesterershire United Kingdom 165 British Ministry of Defense Royal Ordnance WFV Division Nottingham United Kingdom 167 BRK Brands, Inc. 780 McClure Road Aurora, IL 60504-2495 1101 Bruker Detection Corporation 40 Manning Drive Billerica, MA 01821 1103 Bruker Saxonia Analytic GmbH Permoserstrasse 15 FRG-04318 Leipzig 011-49-341-2 Germany 192 Brun Corporation Columbus, OH 712 Brun Sensor Systems, Inc. 1150 West Third Street Columbus, OH 43212 112 BSI Instruments, Inc. 101 Corporation Drive Aliquippa, PA 15001-4863 1205 BSK Industries, Inc. 9385 Chesapeake Drive North Royalton, OH 44133 1179 BTG Pulp & Paper Sensors AB

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P.O. Box 602 S-661 29 Saeffle Sweden 193 Budd Company 197 Bulova Watch Company, Inc. 75-20 Astoria Boulevard Flushing, NY 11370 199 C.E. IN-VAL-CO P.O. Box 556 Tulsa, OK 74101 1274 C.E.A. Department Des Radioelements B.P. No. 2, 91 Gif-Sur Yvette France 202 C.I.S. Radiopharmaceuticals, Inc. 5 Deangelo Drive Bedford, MA 01730 198 Cable Electric Products, Inc. 234 Daboll Street Providence, RI 02940 203 Caliber P.O. Box 1038 Hilton Head Island, SC 29928 1327 California Institute of Technology 1200 East California Blvd. 25-6 Pasadena, CA 91125 210 Cammenga and Associates, Inc. 100 Aniline Avenue N. Holland, MI 49424 1126 Campbell Pacific Nuclear Corporation 130 South Buchanan Circle Pacheco, CA 94553 1305 Campbell Security Equipment Company 2500 Annalisa Drive Concord, CA 94520

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207 Campbell Security Equipment Company (CSECO) 2500 Annalisa Drive Concord, CA 94520 495 Canberra Industries, Inc. 150 Spring Lake Drive Itasca, IL 60143-2096 504 Canberra Industries, Inc. 800 Research Parkway Meriden, CT 06450 218 Capintec, Inc. 136 Summitt Avenue Montvale, NJ 07645 211 Carlo Erba Instrumentazion S.P.A. P.O. Box 20090 20090 Rodano Milan Italy 221 Carolina Nuclear Instruments Research Triangle Park, NC 27709 162 Centergy Technology 4180 Gleanor Hill Road Ann Arbor, MI 48105 1253 Centurion Systems, Inc. 1304 East Wendover Avenue Greensboro, NC 27405 229 CGR MEV Rue De La Miniere B.P. NO.34, 78530 BUC France 1168 Chappell Hill Logging Systems, Inc. P.O. Box 7 Chappell Hill, TX 77426 1034 Che Scientific, Incorporated 2410 Robinson Street Colorado Springs, CO 80904 224 Chevron Research Company

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576 Stand Avenue Richmond, CA 94802 1007 Chrompack BV P.O. Box 519 2600 Am Delft Netherlands 213 Chrompack, Inc. USA 1130 Highway 202 South Raritan, NJ 08869 204 Chrompagic-Packard PO Box 519 Delft Netherlands 222 Cintichem, Inc. P.O. Box 816 Tuxedo, NY 10987 1170 Cirtronics Corporation 528 Route 13 South Milford, NH 03055 702 CIS-US, Inc. Northwood Business Center Unit B-1 3 Northern Blvd Amherst, NH 03031 1311 CivaTech Oncology, Inc. 104 T.W. Alexander Drive Building #6 RTP, NC 27709 715 Clinical Assays, Inc. 237 Binney Street Cambridge, MA 02142 223 Cobe Labs 227 Columbia Scientific Ind. Corp. 11950 Jollyville Road Austin, TX 78759 228 Combustion Engineering

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1008 Commisariat a l'Energie Atomique (CEA) Dept. Des Appl. Et Do La Metrologie Des Rayonnemen Boite Postale No. 21 91193 Gif-Sur-Yvett, Cedex France 225 Compagnie Oris Industrie S.A. (CEA-ORIS-LAPIB) Boite Postal 21 GIF-SUR-Yvette 91190 France 230 Comprobe, Inc. 9632 Crowley Road Crowley, TX 76036 717 Conam Inspection, Inc. Tulsa, OK 74101 105 Conco Services Corp. 7552 Rickenbacker Drive Gaithersburg, MD 20879 1290 Conco Systems 701 Seldon Avenue Verona, PA 15147 1291 Conco Systems 135 Sylvan Street Verona, PA 15147 231 Conto Control Seigan Germany 233 Control Data Corporation 2300 East 88th Street Minneapolis, MN 55425 1304 Control Screening 2 Gardner Road Fairfield, NJ 07004 236 Coratomic, Inc. P.O. Box 434 Indiana, PA 15701

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1081 Core Oncology, Inc. (Formerly Mills Biopharmaceuticals, Inc.) 120 NE 26th Street Oklahoma City, OK 73105 1195 CORPORATE HEADQUARTERS - Sabia, Inc. 15070 Avenue of Science San Diego, CA 92128 240 CPC Pontiac Operations, GMC One Pontiac Plaza Pontiac, MI 48058 208 CPN International, Inc. 4057 Port Chicago Highway Suite 100 Concord, CA 94520 245 Cumberland Research Corporation Port Norris, NJ 08349 1014 Cyclotron Co., Ltd. 1 Bondarenko Square Obninsk Russian Federation 1148 Cytyc Surgical Products II 3581 Haddon Hall Drive Buford, GA 30519 546 D.A. Pittman, Ltd. Weybridge, Surrey United Kingdom 719 Dale Electronics P.O. Box 180 Yankton, SD 57078-0180 252 Dani S.P.A. Via Rovani 10 Italy 1255 Danish Diagnostic Development A/S Dr. Neergaardsvej 5F DK 2950, Horsholm

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Denmark 249 Dart Environmental and Services Company 3725 North Dunlap Street Saint Paul, MN 55112 381 Data Measurement Corporation P.O. Box 490 Gaithersburg, MD 20884 250 Daybreak Nuclear and Medical Systems 50 Denison Drive Guilford, CT 06437 1057 DBA Systems, Inc. 1200 South Woody Burke Road Melbourne, FL 32902-0550 254 Delphi Instruments, Inc. 3030 Red Hat Lane Whittier, CA 90601 155 Department of the Army U.S. Army TACOM Life Cycle Mgmt Command ATTN: AMSTA-CS-CZR (previously U.S. Army Tank-Au Rock Island, IL 61299-7630 206 Detection Systems , Inc. 130 Perinton Parkway Fairpoint, NY 14450 1325 Dewpointer Repair 7 Kemp Drive Chatham, IL 62629 721 Diagnostics Biochem Products 12306 Exposition Boulevard Los Angles, CA 90064 129 DICKEY-john Corporation 5200 DICKEY-john Road P.O. Box 10 Auburn, IL 62615 256 Dicon Systems Limited

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719 Claysen Road Toronto (Weston), ON M9M 2H4 Canada 265 DMW Geophysical 1973 West North Temple Salt Lake City, UT 84116 257 Dosimeter Corporation of America P.O. Box 42377 Cincinnati, OH 45242 262 Dow Chemical 260 Dow Chemical USA Instument Applications Laboratory 1603 Building Midland, MI 48640 258 Dowty Electronics Company Cheltenham, Gloucester United Kingdom 1278 DPS Instruments, Inc. 760 South Rochester Avenue Ontario, CA 91761 1202 Drager Safety AG & Co. KGaA Volmerstrabe 7B 12489 Berlin Germany 1199 Drager Safety, Inc. 505 Julie Rivers Suite 150 Sugarland, TX 77478-2847 1121 DraxImage, Inc. 75 Talcott Road Suite 50 Williston, VT 05495 1117 Draxis Specialty Pharmaceuticals, Inc. 16571 Autoroute TransCanada Highway Kirkland, QC H9H 4J4

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Canada 259 Dredge Technology Corporation P.O.Box 1520 Wayne, NJ 07474-1520 1319 DRS Technologies 645 Anchors Street Fort Walton Beach, FL 32548 1020 Du Pont Sabine River Works P.O. Box 1089 Orange, TX 77630 1242 DuPont Safety & Protection Barley Mill Plaza, Bldg. 23 P.O. Box 80023 Wilmington, DE 19880-0023 1051 Dynalec Corporation 87 West Main Street Sodus, NY 14551-0188 487 DYNO Overlays, Inc. P.O. Box 764 Hayward, WI 54843 539 E. M. Becker Company P.O. Box 119 Bala Cynwyd, PA 19004-0119 725 E. R. Squibb and Sons, Inc. Division of Medotopes P.O. Box 4000 Princeton, NJ 08540 266 E.I. Company Ltd. Shannon Free Airport, Co. Clare Shannon Ireland 754 E.I. Dupont 331 Treble Cove Road N. Billerica, MA 01862 753 E.I. DuPont De Numours & Co.

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549 Albany Street Boston, MA 02118 234 E.S.C Resources, Inc. 28 Riverbend Road Montgomery, IL 60538 267 EAD Metallurgical, Inc. 71 Pearce Avenue Tonawanda, NY 14150 1077 EADS Sodern North America, Inc. 180 Interstate North Parkway, NW Suite 300 Atlanta, GA 30339-2194 723 Ealing Corporation 22 Pleasant Street South Natick, MA 01760 724 Earth Science Materials 110 East Main Street Florence, CO 81226 1022 Eberline Instruments GmbH Radiometrie Postfach 1638 D-19006 Erlangen (R.F.A) Germany 1053 Eckert & Ziegler CESIO RADIOVA 1 102 27 Prague 10 Czech Republic 406 Eckert & Ziegler Isotope Products 24937 Avenue Tibbitts Valencia, CA 91355 510 Eckert & Ziegler Isotope Products 24937 Avenue Tibbits Valencia, CA 91355 273 Edgerton, Germeshausen & Grier P.O. Box 98

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Goleta, CA 93017 274 EG & G Ortec 100 Midland Road Oak Ridge, TN 37830 275 EG & G, Inc. 35 Congress Street Salem, MA 01470 1323 Elcan Optical Technologies 1601 North Plano Road Richardson, TX 75081 278 Electric Distributors, Inc. P.O. Box 1728 Anchorage, AK 99501 1036 Electronic Systems Spa S.S. 229, Km. 12.200 28015-Momo Italy 1055 Electronic Systems Spa S.S. 229, Km.-12,200 28015 - Momo - (NO) Italy 1105 Elekta Instrument AB P.O. Box 7593 - Birger Jarlsgatan 53 SE-103 93 Stockholm, Sweden 722 Elekta Instrument SA P.O. Box 330 1211 Geneva 12 Switzerland 269 Elekta, Inc. 4775 Peachtree Industrial Blvd, Suite 300 Bldg 30 Norcross, GA 30092 1044 ELGEMS, Ltd.

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Hayoma St. 10 P.O. Box 170 Tirat Hacarmel 30200 Israel 268 Ellis Pharmaceutical Consulting, Inc. 913 State Road Princeton, NJ 08540 201 Ellis Pharmecutical Consulting Inc. 913 State Road Princeton, NJ 08540 276 Elscint , Inc. 505 Main Street Hackensack, NJ 07601 316 EMR Photoelectric Division of Schlumberger Technology Corp., Box 44 P.O. Box 44 Princeton, NJ 08542-0044 1309 Endress + Hauser GmbH + Co., Inc. Hauptstrasse 1 D 79689 Maulburg Germany 1302 Endress and Hauser GmbH+Co. Division Level + Pressure 234 Endress Place Greenwood, NJ 46143-9772 799 Energy Technologies, Inc. (ETI) 8819 Joe Daniels Road Knoxville, TN 37931 308 Enrad Corporation 16224 Gundry Avenue Paramount, CA 90723 1190 ENVIRONICS 4401 Eastport Parkway Port Orange, FL 32127 708 Environics OY

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Graaninintie 5 Tyomiehenkatu 2 P.O. Box 349 50100 Mikkeli Finland 1160 Environics USA, Inc. 1308 Continental Drive Suite J Abingdon, MD 21009 279 Environmental Chemical Specialties 3700 East Mira Loma Avenue Anahiem, CA 92806 290 ES Industries 701 South Route 73 Berlin, NJ 08009-2621 1226 ESM Andersen Instruments GmbH Frauenauracher Strasse 96 D-91056 Eriangen Germany 280 Essex Services Company S.W. Division West Monroe, LA 314 Etrac, Inc. 10903 Melton View Lane Knoxville, TN 37931 251 Eurotherm Corporation Kineron Gauging Systems Division 11513 Sunset Road Reston, VA 22090 116 Eurotherm Gauging Systems, Inc. The Middlesex Technology Center 900 Middlesex Turnpike Billerica, MA 01821-3929 394 Eurotherm International Kineron Gauging Systems, Inc. c/o Eurotherm Corp.

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Kineron Gauging Systems Division 11513 Sunset Roa Reston, VA 22090 1127 eV Products A Division of II-VI, Inc. 373 Saxonburg Boulevard Saxonburg, PA 16056 177 Evenlite, Inc. 220 VFW Avenue Grasonville, MD 21638 253 Exxon Production Research Company 3120 Buffalo Speedway P.O. Box 2189 Houston, TX 77252-2189 281 F&M Scientific Corporation 1015 F. Oderkirk Deer Park, WA 99006 284 FAG Bearing Corporation P.O. Box 811 Stamford, CT 06904 287 FAG Kugelfischer GeorgSchafer KGaA Industrial Gauging and Controls Division P.O. Box 1660 D-8529 Erlanger Germany 1037 Fagus Grecon Hannoversche Strasse 58 31042 Alfeld-Hannover Germany 282 Fairchild Weston Systems, Inc. Kennedy Drive Archbald, PA 18403 283 Federal Emergency Managment Agency 500 C Street S.W. Washington, DC 20472

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1027 Ferranti Defense Systems Ltd Laser Systems Group Electro-Optics Dept., Robertson Ave. Edinburgh EH11 1PX United Kingdom 285 Fife Corporation P.O. Box 26508 Oklahoma City, OK 73126 286 Filtec 288 Finnigan Corporation 845 West Maude Avenue Sunnyvale, CA 94086 289 Fire Alert Company Division of Walter Kidde Wheatridge, CO 80033 304 Firetek Corporation 53 Thomas Road Hawsthorne, NJ 07506 291 Fischer Technology, Inc. 750 Marshall Phelps Road Windsor, CT 06095 292 Fisher Body Division of General Motors Corporation 30001 Van Dyke Avenue Warren, MI 48090 293 Fisher Controls P.O. Box 900 McKinney, TX 75069 294 Fisher Scientific Company 711 Forbes Avenue Pittsburgh, PA 15219 341 Fisons Instruments 55 Cherry Hill Drive Beverly, MA 01915 1240 Fluke Biomedical

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(Cardinal Health) 6045 Cochran Road Cleveland, OH 44139-3303 205 Food Instument Co. PO Box 166 Federalsburg, MD 21632-0066 1246 Foss Therapy Services, Inc. 8794 Avalon Street Phone #: 909-980-6229 Altaloma, CA 91030 1089 Framo Engineering AS P.O. Box 174 N-5049 Sandsli Norway 1247 Framo Engineering Houston, Inc. 5599 San Felipe Suite 510 Houston, TX 77056 726 Frank Barker Associates, Inc P.O. Box 30 Pequannock, NJ 07440 295 French Republic Atomic Energy Commision Boite Postale 21 99190 Gif Sur Yvette France 297 Frieseke & Hoepfner 298 Frontier Technology Corporation 1641 Burnett Drive P.O. Box 486 Xenia, OH 45385 1288 FSUE State Scientific Center of Russia Research Institute of Atomic Reactors Division of Dimitrovgrad-10, Ulyanovsk Region 433510 Russian Federation

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727 Fyrex, Inc. Boulder, CO 80301 319 Fyrnetics (Hong Kong) Ltd. 7th Floor, Tin Fung Industrial Mansion 63 Wong Ch Aberdeen Hong Kong 317 Fyrnetics, Inc. 1055 Stevenson Court, Suite 102-W Rosselle, IL 60172 683 G. Siempelkamp GMBH D-4150 Krefeld Germany 588 G.D. Searle Company 299 Gaines Division See General Nuclear, IN 300 Gamma Industries, Inc. 2255 Ted Dunham Avenue Baton Rouge, LA 70821 302 Gamma Instruments 3400 Lier Norway 301 Gamma Instruments, Inc. 49050 Milmont Drive Fremont, CA 94538 353 Gamma Instruments, Inc. 724 North Highland Ave. Aurora, IL 60506 1056 Gammamed USA, Inc. 492 Sutton Street Eagle East Complex North Andover, MA 01845 303 Gammatron, Inc. 5703 Ethridge Drive P.O. Box 34042

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Houston, TX 77087 1085 Garvan Enterprises Ltd Wing Hing Industrial Building 83-92 Chai Wan Kok Tsuen Wan, N.T. Hong Kong 272 GE Infracstructure - Security 12345 S.W. Leveton Road Tualatin, OR 97062 226 GE Medical Systems General Electric Corp. 7455 New Ridge Road Hanover, MD 21076 1049 GE Medical Systems 3000 North Grand View Blvd., W-641 Waukesha, WI 53188 271 GE Security - Pittsfield 5 N. Main Street Pittsfield, ME 04967-1500 306 Gearhart- Owen Industries P.O. Box 34456 Houston, TX 77034 424 Gene Lowery, Inc. Industrionics Division Suscannna, NJ 309 General Atomics 4949 Greencraig Lane San Diego, CA 92123 1280 General Dynamics Armament and Technical Products 4205 Westhouse Commons Drive Charlotte, NC 28273 1167 General Dynamics Armament & Technical Products DeLand Operations 2000 Brunswick Lane

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DeLand, FL 32724-2001 1252 General Dynamics Armament & Technical Products, Inc. Charlotte Operations 4205 Westinghouse Commons Drive Charlotte, NC 28273 310 General Dynamics Land Systems, Inc. P.O. Box 1852 Warren, MI 48001 311 General Electric Company 1285 Boston Avenue Bridgeport, CT 06602 312 General Electric Company Vallecitos Nuclear Center 6705 Vallecitos Road Sunol, CA 94586 1032 General Electric Medical Systems (GE Healthcare) Global Nuclear/PET Business 3000 North Grand View Blvd Waukesha, WI 53188 315 General Motors Corporation 3044 West Grand Boulevard Detroit, MI 48202 321 General Nucleonics, Inc. 2807 Metropolitan Place Pomona, CA 91767 324 General Radioisotopes Products, Inc. San Ramon, CA 94583 729 General Store Post Office Ford, WA 99013 323 Generation 2, Inc. 10580 Barkley, Suite 101 Overland Park, KS 66212 1300 GeoTek Limited 3 Faraday Close

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Daventry Northants NN11 8RD United Kingdom 325 Ginge Fire and Electronics, Ltd. 100, Islevdalvej DK-2610 Roedovre Denmark 333 GNI Incorporated 202 Medical Center Boulevard Webster, TX 77598 1050 Golden Triangle Medical Technologies, Inc. DBA American Radiosurgery, Inc. 16776 Bernardo Ce San Diego, CA 92128 332 Graseby Dynamics Limited Park Avenue Bushey, Hertfordshire Watford, Herts WD2 2BW United Kingdom 326 Graseby Dynamics, Ltd./ PYE Dynamics, Ltd. Botanic House 100 Hills Road Cambridge CB211Q United Kingdom 329 Graseby Security, Ltd. Unit 3-4 Odhams Trading Estate, St. Albans Road Waterford Herts WD2 5JW United Kingdom 101 Graseby STI P.O. Box 2470 Waldron, AR 72958 1254 Gray Wireline Services, Inc. 1103 East Lake Drive Weatherford, TX 76087 1035 Grecon, Inc. 7747 SW Cirrus, Building 26

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Beaverton, OR 97009 776 Grinnell Fire Protection Systems, Inc. 27865 Clemens Road Westlake, OH 44145 318 GSI (Gun South, Inc.) P.O. Box 129 Trussville, AL 35173 1038 Guidant Corporation 8990 Kirby Drive Suite 200 Houston, TX 77054 1070 Guidant Corporation VI 8934 Kirby Drive Houston, TX 77054 328 Gulf Energy and Environmental Systems 334 Gulf Radiation Technology Division of Gulf Oil Corp. San Diego, CA 92101 346 Gunson's Sortex, Ltd. Warton Road Stratford London E 15 2JU United Kingdom 1317 Halliburton Geophysical Services Worden Gravity Meter Division Mid 1980's until 19 Houston, TX 307 Halliburton Logging Services, Inc. Vacuum Devices Facility P.O. Box 1936 Fort Worth, TX 76101 340 Hallibuton Company 1015 Bois D'arc Duncan, OK 73536-0100 342 Harrel, Inc. 16 Fitch Street East Norwalk, CT 06855

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343 Harwell Commercial Officer Bldg. 329, Aere Harwell Oxfordshire OX11 , ORA United Kingdom 1238 Hauni Maschinenbau AG Kampchaussee 8-32 21033 Hamburg 80 Germany 345 Hauni Richmond, Inc. 2800 Charles City Road Richmond, VA 23231 344 Hauni-Werke Korber and Company K.G. Kampchaussee 14-22 2050 Hamburg 80 Germany 1230 Hazen Research, Inc. 4601 Indiana Street Golden, CO 80403 731 Heary Bros. Lightning Protection 11292 Moore Road Springville, NY 14141 336 Hebden, Schilbe, & Smith, Inc. 1699 Washington Road, Suite 301 Pittsburgh, PA 15228 1040 Hemisphere Forwarding, Inc. 7 Cerro Street Inwood, NY 11696 347 Heraeus American Vacuum, Inc. 1009 Herfurth GMBH P.O. Box 500 648 Hamburg Germany 338 Herurth, GMBH Germany

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352 Hesco, Inc. 2139 Greenville Road LaGrange, GA 30240 1265 Hess's Fine Arts 1131 4th Street North Saint Petersburg, FL 33701 599 Heuft USA, Inc. 5157 Thatcher Road Downers Grove, IL 60515-4029 354 Heuft Systemtechnik GMBH Postfach 185 D-5475 Burgbrohl Germany 1259 HiEnergy Technologies, Inc. 1601 Alton Parkway Unit B Irvine, CA 92606 1301 Hi-Q Environmental Products Company 7386 Trade Street San Diego, CA 92121 349 Hispano- Martin S.A. Vois-Colombes France 1075 Hitachi Medical Systems, America 1959 Summit Commerce Park Twinsburg, OH 44087 351 Hitman Nuclear & Development Corp. 9190 Red Branch Road Columbia, MD 21043 330 HNU Systems, Inc. 160 Charlemont Street Newton Highlands, MA 02161-9987 363 HNU Systems, Inc. 1003 Larsen Drive Oak Ridge, TN 37830

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1041 HNU-Nordion Ltd P.O. Box 1, Atomite 5A3 FIN-00371 Helsinki Finland 337 Hochiki Corporation 10-43 Kaimmosoki-2 Chome, Shinagawa-Ku Tokyo Japan 355 Hochiki America Corporation 7051 Village Drive Buena Park, CA 90621-2268 501 Honeywell International, Inc. Radiological Operations 2500 West Union Hills Drive Phoenix, AZ 85027-5139 547 Honeywell International, Inc./acting through the System Sensor business of its Fire Solutions Group 3825 Ohio Avenue St. Charles, IL 60174 571 Honeywell, Inc. Industrial Automation and Control 3079 Premiere Parkway, Suite 100 Duluth, GA 30097 1138 Hopewell Designs, Inc. 5940 Gateway Drive Alpharetta, GA 30004 1232 Hotwell G.mb.H. Oedenburgerstrasse 6 A-7013 Klingenbach, ZZ Austria 1296 Hotwell Ges; m.b.h. Odenburger Strasse 6 A-7013 Klingenbach, Austria, ZZ 1297 Hotwell USA P.O. Box 672721

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Houston, TX 77267 706 Houget Duesberg Bosson, S.A. Belgium 1316 Houston Technical Laboratories (Late 1940's until 1953) Houston, TX 362 Houten Int'l Technology, Ltd. Wing Hing Industrial Building 83-93 Chai Wan Kok St. Tsuen Wan, N.T. Hong Kong 733 Hubbard Scientific Company 1120 Halbleib Road Chippewa Falls, WI 54729 732 Hughes Danbury Optical Systems, Inc. 100 Wooster Heights Road Danbury, CT 06810-7589 1039 Hughes Leitz Optical Technologies, Ltd 328 Ellen Street Midland, ON LAR 2H2 Canada 356 Humboldt Scientific, Inc. 551D Pylon Drive Raleigh, NC 27606 358 Hydro Test Products, Inc. 85 Hudson Road Stow, MA 01775 357 Hydronautics- Israel, Ltd. 396 I2S, LLC 475 Main Street Yalesville, CT 06492 359 IBM Instruments, Inc P.O. Box 332 Danbury, CT 06810 360 ICN Radiopharmaceutical, Inc.

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Life Science Group 2727 Campus Drive Irvine, CA 92664 366 Idaho Industrial Instruments, Inc. 273 West Pacific Blackfoote, ID 83221 1018 IDS Intelligent Detection Systems The Galson Building 6601 Kirkville Road East Syracuse, NY 13057 1026 IDS Intelligent Detection Systems (CA) 152 Cleopatra Drive Nepean, ON K2G 5X2 Canada 1248 IEC Electronics 105 Norton Street Newark, NY 14513 370 IHC Holland N.V. P.O. Box 204 3360 AE Sliedrecht Netherlands 367 IIT Research Institute 10 West 35th Street Chicago, IL 60616 369 I-Lite Products, Inc. 1132 San Martin Drive Tucson, AZ 85704 364 Impact Systems OY Kivelantie 5 70420 Kuopio Finland 386 Impact Systems, Inc. 14600 Winchester Boulevard Los Gatos, CA 95030 368 Imperial Chemical Industries, Ltd.

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P.O. Box 1 Billingham, Cleveland TS23 1LB United Kingdom 1078 Implant Sciences Corporation 107 Audubon Road, #5 Wakefield, MA 01880-1246 1125 IMS Messsysteme GmbH Dieselstrasse 55 5628 Heiligenhaus Germany 1120 IMS Systems, Inc. 519 Myoma Road Mars, PA 16046 1079 Indev Gauging Systems 6830 Forest Hills Road Loves Park, IL 61111 335 Industrial Analytics Corp. (IAC) 11020 Solway School Road, Suite 105 Knoxville, TN 37931 1033 Industrial and Research Measurement Systems, Inc. IRMS 3940 Gantz Road P.O. Box 1210 Grove City, OH 43123 378 Industrial Dynamics Company, Ltd. 3100 Fujita Street Torrance, CA 90505 384 Industrial Nuclear Company 2515 Williams Street San Leandro, CA 94577 555 Industrial Nuclear Company, Inc. 35 Flagship Drive North Andover, MA 08145 387 Industrial Nucleonics Corporation 650 Ackerman Road

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Columbus, OH 43202 390 Industrial Reactor Laboratories, Inc. 429 South Harding Street Indianpolis, IN 46221 391 Industrial Services and Supply Company, Inc. 2322 Carrollwood Lane Cordova, TN 38018 1210 Inficon, Inc. 2 Technology Place East Syracuse, NY 13052 1214 Ingersoll-Rand LCN Division 121 W. Railroad Avenue Princeton, IL 61356-0100 397 Inspection Equipment Manufacturing Corporation 2027 Sable Lane San Antonio, TX 78217 398 Inspection Signal Services Subsidiary of Essex Services Company 1264 Institute of Geological and Nuclear Sciences Ltd. 30 Gracefield Road Lower Hutt, ZZ New Zealand 1241 Instrotek, Inc. 5908 Triangle Drive Raleigh, NC 27617 1130 Integrated Plant Electrokhimpribohr Lesnoy City, Sverdlovsk Region, 624200 Russian Federation 400 Interex Corporation 3 Strathmore Road Natick, MA 01760 1096 International Brachytherapy SA Zone Industrielle C B - 7180 Sneffe

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Belgium 1061 International Brachytherapy, Inc. 6000 Live Oak Parkway, Suite 107 Norcross, GA 30093 401 International Chemical and Nuclear Corp 2727 Campus Drive Irvine, CA 92664 1011 International Chemical and Nuclear Corp 361 International Consumer Brands, Inc. 126 Monroe Turnpike Trumbull, CT 06611 383 International Consumer Brands, Inc. 1901 Rutland Austin, TX 78758 1104 International Isotopes Idaho, Inc. 2325 West Broadway, Suite D Idaho Falls, ID 83402 1153 International Isotopes Idaho, Inc. 4137 Commerce Circle Idaho Falls, ID 83401 1068 International Isotopes, Inc. 3100 Jim Christal Road Denton, TX 76207-2600 1235 International Isotopes, Inc. 4137 Commerce Circle Idaho Falls, ID 83401 1025 International Radiography & Inspection Services, Inc 7620 Melrose Lane Oklahoma City, OK 73127 735 Internetics 2275 South West Temple Salt Lake City, UT 84101 388 Inter-Pal GMBH Weislelstr 46 8520 Buckenhof 09131-55689

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Germany 395 In-Val-Co 545 Invensys Climate Controls Americas 191 East North Avenue Carol Stream, IL 60188 1267 Ion Applications, Inc. 9030 Bellhurst Way, #125 Lake Worth, FL 33461 402 IRT Corporation P.O. Box 85317 San Diego, CA 92138 403 ISO VAC Engineering, Inc. 932 Grand Central Avenue Glendale, CA 91201 1146 IsoAid, L.L.C. 7824 Clark Moody Boulevard Port Richey, FL 34668 1299 Isodose Control P.O. Box 6215 Ellicott City, MD 21042 1310 Isodose Control B.V. Maxwellstraat 16 6716 BX Ede Netherlands 1286 Isolite Corporation 31 Waterloo Avenue Berwyn, PA 19312 404 Isomedix, Inc. 80 South Jefferson Road Whippany, NJ 07981 1060 Isomedix, Inc. 11 Apollo Drive 11 Apollo Drive Whippany, Nj 07981 1268 Isonics Homeland Security and Defense Corporation

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5906 McIntyre Street Golden, CO 80403 1220 Iso-Ray 350 Hills Street Suite 106 Richland, WA 99352 1239 Isoscan Limited dba True View Limited 438 North Frederick Avenue Suite 220 Gaithersburg, MD 20877 1152 IsoStar Texas dba Imagyn Medical Technologies 3100 Jim Christal Denton, TX 76207-2600 1073 Isotope Measuring Systems 2221 Peachtree Road NE Suite P-32 Atlanta, GA 30309 375 Isotope Measuring Systems, Inc. 108 Blue Ridge Drive Cranberry Township, PA 16066 1194 Isotope Products Laboratories (IPL) 1800 North Keystone Street Burbank, CA 91504 1143 Isotope Products Laboratories, Inc. 24937 Avenue Tibbitts Valencia, CA 91355 331 Isotopen Messsystene GMBH (Isotope Measuring Systems) Dieselstrasse 55 Postfach 10 03 52, 5628 Heiligenhaus Germany 373 Isotopen Technik Dr. Suuerewin, GmbH Bergische Strasse 16

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D-5657 Haan Germany 371 Israel Military Industries Weapons Division P.O. Box 7080 Tel-Aviv 61070 Israel 405 Itere Corporation 323 Sinclair Frontage Road Milpitas, CA 95035 407 J. G. Sylvester Associates, Inc. 900 Hingham Street Rockland, MA 02370 598 J.L. Shepherd and Associates 1010 Arroyo Street San Fernando, CA 91340-1822 409 James Electronics, Inc. 4050 North Rockwell Street Chicago, IL 60618 435 Japan Aircraft Maintenance (America) Inc. [JAMCO] 1018 80th Street, S.W. Everett, WA 98203 382 Japan Tobacco, Inc. Machinery Enterprise Division 2-2-1 Toranomon Minato-Ku Tokyo 105 Japan 410 Jay Stuart Haft Company, Inc. Marine Equipment Distributors P.O. Box 11210 Bradenton, FL 33507 414 John Harrison 140 Sutherland Drive Auburn, CA 95603 694 John U. Hidalgo 1209 Lair Avenue

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Metairie, LA 70003 408 Johnson & Johnson 501 George Street New Brunswick, NJ 08903 737 Kaiser Aerospace Electronics 2222 West Peoria Avenue Phoenix, AZ 85020 739 Kallestad Laboratories, Inc. 100 Lake Hazeltine Drive Chaska, MN 55318 411 Kaman Sciences Corporation 1500 Garden of the Gods Road Colorado Springs, CO 80922 1272 Kanawha Scales and Systems 5525 Chantry Drive Columbus, OH 43232 1133 KBM Enterprises, Inc. 15980 Chaney Thompson Road Huntsville, AL 35803 798 KBM Manufacturing 15980 Chaney Thompson Road Huntsville, AL 38503 1158 Keens Tools, Inc. 49-1 Feng Hwa, Feng Hwa Tsuen Republic of China Shin Shyh Hsiang, Tainan Hsien, Taiwan 413 Keleket X-Ray 653 Keymaster Technologies, Inc. 415 North Quay Street Kennewick, WA 99336 668 Kidde Fenwal Fenwal Division 400 Main Street Ashland, MA 01721

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416 Koppers Industries, Inc. 1005 William Pitt Way Pittsburgh, PA 15238 427 Koppers Process Technologies 5600 Oakbrook Parkway, Suite 100 Norcross, GA 30093 738 Krohne Measurement and Control GmbH & Company, KG Ludwig-Krohne-Strasse 5, Postfach 100 970 4100 Duisburg 1 Germany 415 Krohne-America, Inc. 11 Dearborn Road Peabody, MA 01966 1279 KRONES AG BohmerwaldstraBe5/Neutraubling D-93073 Germany 374 Krones Incorporated Kroneseder Farmes, 24605 River Road Marengo, IL 60152 449 Krones Incorporated 9600 South 58th Street Franklin, WI 53132 1266 Krones USA 6312 West Oakton Street Morton Grove, IL 60053 1087 Krupp Polysius, AG Graf Galen Str. 17 59269 Beckum Germany 433 Kuakini Medical Center 347 West Kuakini Street Honolulu, HI 96817 425 Laboratorium Prof. Dr. Berthold Calmbucher Strasse 22 - Postfach 160 D-7547 Wildbad 1

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Germany 626 Lagus Applied Technology, Inc. 11760 Sorrento Valley Road, Suite M San Diego, CA 92121 429 LBO Assoc. 710 Livernois Ferndale, MI 48220 417 LCN Closers P.O. Box 100 Princeton, IL 61356 419 Lear-Seigler Englewood, CO 423 Level Link, Inc. 1205 West Berkley Avenue Orange, CA 92668 638 Level Link, Inc. 1205 West Berkeley Orange, CA 92668 420 LFE Industrial Systems Corp. 55 Green Street Clinton, MA 01510 431 Link Systems, Inc. (USA) 11735 Bowman Green Drive Reston, VA 22090 1145 LitePro 3731 N Country Club Drive #525 Aventura, FL 33180 421 Litton Medical Products, Inc. Profexray Division 515 East Touhy Avenue Des Plaines, IL 60018 422 Lixi, Inc. 1438 Brooks Drive Downers Grove, IL 60515 741 LKB Instruments Inc.

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9319 Gaither Road Gaithersburg, MD 20877 740 LKB Wallac Oy PO Box 10 20101 Turku 20 Finland 1043 LNI Electronics SA 109B Chemin duPont duCentrenaire Ch-1228 Plan-es-Quates Switzerland 313 Lockheed Martin Corporation Lockheed Martin Aeronutronic 29947 Avenida De La Banderas Rancho Santa Margarita, CA 92688-7004 1116 Lockheed Martin Corporation Missiles & Fire Control-Orlando Ocala Operations 498 Oak Road Ocala, FL 34472 582 Lockheed Martin Tactical Systems Division 459 Kennedy Drive Archbald, PA 18403-1598 743 Louis Ried, Jr. Boulder, CO 534 LSC Process - und Laborsysteme GmbH Carl - Borgward - Strasse 18 D-56566 Neuwied Germany 1021 LSC Process - und Laborsysteme GmbH Carl - Borgward - Strasse 18 D-56566 Neuwied Germany 566 LTV Steel Company, Inc. LTV Steel Building 25 West Prospect Avenue Cleveland, OH 44115

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426 Ludlum Measurements, Inc. 501 Oak Street Sweetwater, TX 79556 428 Ludwig Krohne Company Duisburg Germany 430 Lunar Corporation 313 West Beltline Highway Madison, WI 53713 1293 Lux Biotechnology, Ltd. ETTC Biospace Kings Building Edinburgh EH9 3JF Ukraine 209 M&A Packaging Services Ltd. Spring Lane North Malvern Link, WR14 4BU United Kingdom 1108 M&K Chemical Engineering Consultants, Inc. dba Gamma Surveys 16511 Space Center Blvd., Suite 400 Houston, TX 77058 322 M. Hensoldt & Sohne Optische Werke AG Zeiss-Gruppe West Germany, Gloelstrasse 3-5 D-6330 Wetzlar 1 Germany 128 M/K Systems, Inc. 12 Garden Street Danvers, MA 01923 434 Machinery Electrification, Inc. Northboro, MA 01532 436 Magnaflux Corporation 7300 West Lawrence Avenue Chicago, IL 60656 488 Magnalarm, Inc.

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5115 Louden Drive Fort Wayne, IN 46815-5040 437 Magnum Research, Inc. 2825 Anthony Lane South Minneapolis, MN 55418 438 Mahlo America P.O. Box 2825 Spartanburg, SC 29304-2825 1276 Mahlo America, Inc. 575 Simuel Road P.O. Box 2825 Spartanburg, SC 29304-2825 439 Mahlo GMBH & Co. Donaustr. 12 D-93340 Saal/Donau Germany 440 Mallinckrodt Diagnostics 2703 Wagner Place Maryland Heights, MO 63043 1100 Mallinckrodt Medical B.V. Westerduinweg 3 NL 1755 LE Petten Netherlands 1313 Mallinkrodt Medical BV Westerduinweg 3 1775 Le Petten Netherlands 389 Marathon Watch Company 30 Mural Street Unit 19 Richmond Hill, ON L4b 1B5 Canada 505 Marathon Watch Company, Ltd. 317 Broad Street Montoursville, PA 17754 350 Mar-Chem, Inc.

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P.O. Box 2311 Greenville, SC 29602 327 Martin L. Kaiser, Inc. P.O. Box 171 Cockeysville, MD 21030 442 Martin Marietta Baltimore, MD 21203 441 Martin Marietta Corporation Denver Division Denver, CO 80225 447 Martin Marietta Energy Systems, Inc P.O. Box X Oak Ridge, TN 37831 1072 Matsushita Industries 343 Carol Lane Elmhurst, IL 60126 704 Maxtron Corp. 152 Continental Dallas, TX 75207 1271 Mb Microtec 908 Niagra Falls Boulevard North Tonawanda, NY 14120 446 MB-Microtec (USA) P.O. Box 1174 North Tonowanda, NY 14120 377 MB-Microtec AG Freiburgstrasse CH-3172 Niederwangen Switzerland 443 McDonnell Douglas Astronautics Company Western Division, Douglas Laboratories 2955 George Washington Way Richland, WA 99352 432 MDH Industries, Inc. 426 West Duarte Road

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Monrovia, CA 91016 169 MDS Nordion - A division of MDS (Canada) Inc. 447 March Road Ottawa, ON K2K 1X8 Canada 1206 MDS Nordion Haan GmbH Bergische Str. 16 D-42781 Haan Germany 1312 MDS Nordion SA Zoning Industrial B-6220 Fleurus Belgium 220 MDS Nordion, Inc. A Division of MDS (Canada), Inc. 447 March Road P.O. Box 13500 Ottawa, ON K2K 1X8 Canada 444 Mead Diagnostics, Inc. Bedford, MA 445 Measurements, Inc. P.O. Box 1742 Idaho Falls, ID 83401 242 Meddings Radiographics. LTD Kingsley Close, East Way Lee Mill Industrial Estate Ivybridge, Devon, PL21 9LL England 479 Medical and Scientific Enterprises, Inc. (MS&E) 75 Union Avenue Sudbury, MA 01776 136 Medi-Physics, Inc. 3350 North Ridge Avenue Arlington Heights, IL 60004 448 Medi-Physics, Inc.

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900 Durham Avenue South Plainfield, NJ 07080 238 Medite Corporation P.O. Box 4040 Medford, OR 97501 450 Medtronic, Inc. 7000 Central Avenue NE CBC T275 Minneapolis, MN 55432 1119 Meprolight, Inc. 1 Lawton Street Yonkers, NY 10705 1223 Meprolight, Inc. 3 Beech Street Islip, NY 11751 1222 Meprolight, Inc. (Corporate Office) c/o Klein & Hill 521 Fifth Avenue New York, NY 10175 451 Meprolight, Ltd. Hof HaCarmel 30805 Kibbutz Maayan Zvi, 30805 Israel 452 Merrick-Scale Manufacturing 180-190 Autumn Street Passaic, NJ 07055 1124 Met One Instruments 1600 Washington Blvd. Grants Pass, OR 97526 454 Meteorology Research, Inc. 464 West Woodburgy Road Altodena, CA 91001 701 Metorex Incorporated 250 Phillips Blvd Princeton Crossroads Crp.Center

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Ewing, NJ 08618 549 Metorex International, Oy P.O. Box 85 SF-02201 ESPOO Finland 720 Metso Automation OY Lentokentankatu 11 SF-33101 Tampere Finland 596 Metso Automation USA, Inc. 2900 Courtyards Drive Norcross, GA 30071 457 Mettronix Company 4774 Murietta Street Chino, CA 91710 1151 MGP Instruments SA Route D'Eyguieres BP1 13113 Lamanon France 1147 MGP Instruments, Inc. 5000 Highlands Parkway Suite 150 - 770-432-2744 Smyrna, GA 30082 453 Mick Radio-Nuclear Instruments, Inc. 1470 Outlook Avenue Bronx, NY 10465 745 Miles Laboratories Elkhart, IN 46514 455 Milltronics, Ltd. Peterborough, Ontario Canada 456 Milltronics, Ltd. Watertown, NY 13601 458 Mine Safety Appliance Company P.O. Box 429

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Pittsburgh, PA 15235 1275 Miniature Machine Corporation 7770 S. Duneville Street Suite 10 Las Vegas, NV 89139 747 Minneapolis- Honeywell Regulator Company P.O. Box 312, MS MN 17-3636 Minneapolis, MN 55413 459 Minnesota Mining and Manufacturing TLAAP Building 590 New Brighton, MN 55112 460 Minnesota Mining and Manufacturing 3M Health Physics Services 3M Center, Building 244-2E-06 St. Paul, MN 55144-1000 463 Mirtone Industries, Inc. 510 West 5Th Avenue Naperville, IL 60540 464 Mirtone Industries, Ltd. 425 Alness Street, Downsview Toronto, ON M3J 2H4 Canada 461 Modern Equipment Corporation Port Washington, WI 1137 Molecular Analytic 25 Loveton Circle Sparks, MD 21152 465 Molesgaard Medical Rungstedeuj 13 DK-2970 Horsholm Denmark 462 Molins Richmond, Inc. 3900 Carolina P.O. Box 6159

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Richmond, VA 23222-0159 467 Monsanto Chemical Intermediaties Company P.O. Box 1311 Texas City, TX 77592 466 Monsanto Company, Dayton Laboratory Station B-Box 8 1515 Nicholas Road Dayton, OH 45407 1193 Montesino Technologies, Inc. 1900 Superfine Lane Suite 7 Wilmington, DE 19802-4920 399 Morpho Detection, Inc. 205 Lowell Street Wilmington, MA 01887 1263 Morpho Detection, Inc. 7007 Gateway Blvd. Newark, CA 94560 1282 Morpho Detection, Inc. 7151 Gateway Boulevard Newark, CA 94560 1283 Morpho Detection, Inc. 3211 Progress Drive Lincolnton, NC 28092 1326 Morpho Detection, Inc. 7151 Gateway Boulevard Newark, CA 94560 468 Morrison-Knudson Company, Inc P.O. Box 7808 Boise, ID 82729 473 Mott, Inc. Subsidiary of R.C. Industries 17 Hughes Street Irvine, CA 92713 749 Mottler Instrument Corporation

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Princeton, NJ 08540 782 MS Sedco 8701 Castle Park Drive Indianapolis, IN 46256 376 MSA Baseline Industries Subsidiary North Star Route Lyons, CO 80540 691 MSA Catalyst Research 3706 Crondall Ln Owings Mills, MD 21117-2205 1203 MTI Industries, Inc. 31632 N. Ellis Drive #301 Volo, IL 60073 200 NATCO Division of National Tank Co. P.O. Box 1710 Tulsa, OK 74101 751 National Institute of Standards and Technology Gaithersburg, MD 20877 1150 National Security Associates P.O. Box 8465 Warner Robbins, GA 31095 471 NDC Infrared Engineering, Inc. 5314 North Irwindale Avenue Irwindale, CA 91706 472 NDT Systems, Inc. P.O. Box 4999 Odessa, TX 79760 553 Nemoto and Company, Ltd. 1-15-1 Kamiogi Suginami-Kum Tokyo 167 Japan 1329 NeoVista, Inc. 47865 Fremont Blvd. Fremont, CA 94538

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474 Neutron Products 22301 Mt. Emphraim Road P.O. Box 68 Dickerson, MD 20842 475 New Japan Aircraft Maintenance Japan 503 Newmet Krebsoge P.O. Box 68 Terryville, CT 06786 478 Nicolet Instrument Corporation 5225 Verona Road Madison, WI 53711 1161 Ningbo TLC Plastic Products Co., Ltd. South of No. 329 National Highway Zhangqi Town, Cixi City, Zhejiang Province, 315313 China 164 Niton Corporation 1130 Ten Rod Road Suite C-207 North Kingstown, RI 02852 752 Nittan Company, Ltd. 11-6, 1-Chome, Hatagaya, Shibuya-Ku Tokyo 151 Japan 481 Nittan Corporation 1299 Rand Road Des Plaines, IL 60016 757 NMC 1173 Nohmi Bosai, Ltd. 7-3 Kudan Minami, 4-Chome Chiyoda-bu Tokyo, 102 Japan 477 Noram Testing Technology, Ltd. Scarborough, ON Canada

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756 Nordisk Elektrisk Apparatfabrik Denmark 482 Norland Corporation Norland Instrument/INO-Tech Inc. W6340 Hackbarth Road Fort Atkinson, WI 53538 480 Nortechnics, Ltd. 2110 Powers Ferry Road, Suite 232 Atlanta, GA 30339 255 North American Detectors, Inc. (NADI) Butterfield Industrial Park 30 Spur Lane El Paso, TX 79906 484 North American Philips Company, Inc. 100 East 42nd Street New York, NY 10017 1251 North American Scientific, Inc. 20200 Sunburst Street Chatsworth, CA 91311 486 North American X-Ray Div. Buckeye Pipeline Company Allentown, PA 1172 Northrop Grumman Guidance & Elec. Co., Inc. Laser Systems Division 2787 South Orange Blossom Trail Apopka, FL 32703 483 Notifier Company 755 Notifier Corporation 3700 North 56Th Street Lincoln, NE 68504 380 Nova R&D, Inc. 1525 3rd Street Riverside, CA 92507 1052 Nova Therapeutic Systems 502 NRD, Inc.

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2937 Alt Boulevard North Grand Island, NY 14072 489 Nuclear Associates, Inc 100 Voice Road Carle Place, NY 11514 490 Nuclear Electronic Controls Inc. Research Triangle Park, NC 27709 491 Nuclear Enterprises San Carlos, CA 94070 492 Nuclear Enterprises Ltd.. Beenham, Reading United Kingdom 493 Nuclear Environmental Engineering, Inc. Houston, TX 77001 494 Nuclear Equipment Corporation San Carlos, CA 94070 1013 Nuclear Instruments Corp. 2300 West Camden Road Milwaukee, WI 53201 496 Nuclear Instruments Corporation 65 Grove Street P.O. Box 178 Rockland, MA 02370 498 Nuclear Materials and Equipment Corporation 685 Nuclear Metals Concord, MA 01742 500 Nuclear Products Company P.O. Box 5178 South El Monte, CA 91733 750 Nuclear Research and Development Nuclear Instruments and Accessories P.O. Box 1261 Berkley, MI 48072 509 Nuclear Scanning Services, Inc. Houston, TX 1328 Nuclear Scanning Services, Inc.

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2437 Bay Area Blvd. PMB 297 Houston, TX 77058 506 Nuclear Semiconductor Division of United Scientific Corporation 345 East Middlefield Road Mt. View, CA 94043 508 Nuclear Sources and Services, Inc. P.O. Box 34042 Houston, TX 77234 514 Nucleonic Data Systems 2811 McGain Avenue Irvine, CA 92714 516 Nucleonic Industries 2255 East Aviation Highway Tucson, AZ 85713 497 Nucletron Corporation 8671 Robert Fulton Drive Columbia, MD 21046-2133 499 Nucletron Engineering B.V. Waardgelder 1 3905 TH Veenendaal Netherlands 515 Nucletronics APS Maalov Vaerkstedsby 87 DK-2750 Maalov Denmark 130 nuclitec GmbH Gieselweg 1 Postfach 11 49 D-38110 Braunschweig Germany 1256 nuclitec GmbH Gieselweg I 38110 Braunschweig

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Germany 1066 Nycomed Amersham 900 Durham Avenue South Plainfield, NJ 518 Oak Ridge National Laboratory Building 3037 Oak Ridge, TN 37830 246 Oceaneering International, Inc. Solus Schall Division 1650 Farm Road 2725 Ingleside, TX 78362 512 Ohmart Corporation 1405 Jamike Drive Erlanger, KY 41018 522 Ohmart/Vega Corporation 4241 Allendorf Drive Cincinnati, OH 45209 1281 Oncology Systems 119 Teal Street St. Rose, LA 70087 1270 Oncology Systems, Inc. 206 North Randolph Street Suite 300 Champaign, IL 61280 521 Optic-Electronic Corporation 11477 Pagemill Rd. Dallas, TX 75201 1257 Orlando Operations 5600 Sand Lake Road Orlando, FL 32819 525 Osteon, Inc. P.O. Box 430 Wahiawa, HI 96786 519 Outokumpu Engineering, Inc. P.O. Box 16573

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Denver, CO 80216 523 Overhoff Technology Corporation P.O. Box 182 Milford, OH 45150-9705 1322 Owlstone Ltd. 127 Cambridge Science Park Milton Road Cambridge CB4 0GD United Kingdom 1321 Owlstone Nanotech, Inc. 400 Rella Blvd. Suite 160 Montebello, NY 10901-4241 517 Oxford Analytical Instruments, Ltd. 20 Nuffield Way Abingdon, Oxon OX14 1TX United Kingdom 235 Oxford Instruments Measurement, Inc. 945 Busse Road Elk Grove Village, IL 60007-6098 143 Oxford Instruments, Inc. Analytical Systems Div. 130a Baker Ave. Ext. Concord, MA 01742 507 OY Scienta AB Valimotie 1 A SF-00380 Helsinki Finland 524 P.A., Inc. P.O. Box 7631 Houston, TX 77007 526 Pacific Air Industries 1324 Pacific Northwest 902 Battelle Blvd. P.O. Box 999

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Richland, WA 99352 529 Packard Instrument Company 2200 Warrenville Road Downers Grove, IL 60515 527 Packard-Becker B.V. Delft Netherlands 530 Panametrics, Inc. 221 Crescent Street Waltham, MA 02154 531 Panasonic Industrial Company Two Panasonic Way Secaucus, NJ 07094 795 Panasonic Technologies, Inc./Mierl 9401 West Grand Avenue Franklin Park, IL 60131-3430 761 Pantex P.O. Box 966 Malibu, CA 90265 296 Panther Systems Northwest, Inc P.O. Box 5279 Vancouver, WA 98668-5279 1208 Paper Making Controls Service, Inc. 454 Cherokee Drive Moultrie, GA 31768 532 Parkwell Laboratories, Inc. Croton, OH 43013 1217 Particle Measuring Systems 5475 Airport Boulevard Boulder, CO 80301-2339 1269 PartnerTech, Inc. 2222 Northmont Parkway Suite 200 Duluth, GA 30096 1099 PE Instruments Asia PTE

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13-01 Peninsula Plaza 111 North Bridge Road Singapore 0617 Singapore 1098 PE Photovac 330 Cochran Drive Markham, ON L3R 8E5 Canada 533 Peco Controls Corporation 450 Montague Expressway Milpitas, CA 95035 1284 Perkin Elmer Life and Analytical Sciences 2200 Warrenville Road Downers Grove, IL 60515 1142 Perkin Elmer Life Sciences 549 Albany Street Boston, MA 02118 536 Perkin-Elmer Corporation LAS, Inc. 710 Bridgeport Avenue Shelton, CT 06484 1294 PerkinElmer LAS (Wallace Oy) Mustionkatu 6 FI-20750 Turku Finland 1003 Pettit Applied Technologies 34 Cessna Court Gaithersburg, MD 20879 762 Pharmacia Laboratories, Inc. 800 Centennial Avenue Piscataway, NJ 08854 543 Pharmacia LKB Wallac OY P.O.Box 10 20101 Turku 10 Finland 219 Pharmalucence, Inc.

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10 De Angelo Drive Bedford, MA 01730 537 Philips Electronic Instruments, Inc. 85 McKee Drive Mahwah, NJ 07430 102 Philips Medical System ADAC Laboratories 540 Alder Drive Milpitas, CA 95035 538 Philips Medical Systems Inc. Shelton, CT 06484 104 Phillips Medical Systems, America 595 Miner Road Highland Heights, OH 44143 1181 Photovac, Inc. 176 Second Avenue Waltham, MA 02451-1166 540 Physikalisch-Technische Werkstatten Werkstatten Germany 542 Picker Corporation 595 Minor Road Cleveland, OH 44143 692 Picker-Andrex Denmark 616 Pioneer Manufacturing, Inc. P.O. Box 20241 St. Petersburg, FL 33742 544 Pipe Recovery Systems, Inc. 1462 B Brittmoore Road Houston, TX 77043 1136 Pittway Tecnologica, S.p.A. Via Caboto, 19 Trieste 34147 Italy

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548 Plastic Applicators, Inc. 1215 Plexus Corporation 4 Copeland Drive Ayer, MA 01432 550 Pneumat-A-Ray Products 1141 Positron Corporation 1304 Langham Creek Drive Suite 300 Houston, TX 77084 1065 Powertronic Systems, Inc. 13700 Chef Menteur Highway New Orleans, LA 70129 551 Princeton Gammatech, Inc. 1200 State Road Princeton, NJ 08540 748 Process Technology, Inc. 1122 Calumet Ave. Calumet, MI 49913 746 Process/Polited Technology Area Plant 4, Flint West Complex AC Delco Systems, 300 N. Chevrolet Flint, MI 48555 513 Provalid AB Avtalsvagen 15 S-227 61 Lund Sweden 794 Provalid Corporation 460 Spring Park Place Herndon, VA 22070 552 Pye Unicam, Ltd. Cambridge United Kingdom 554 Pyrotector, Inc. 333 Lincoln Street Hingham, MA 02043

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758 Q.E.D. Services Ltd. Unit 2, Suffolk Road, Great Yarmouth Norfolk NR31 OLN United Kingdom 628 QSA Global, Inc. Radiation Products Division 40 North Avenue Burlington, MA 01803 1059 QSA Global, Inc. QSA, Inc. 40 North Avenue Burlington, MA 01803 556 Qual-X Inc. P.O. Box 236 Powell, OH 43065 695 Quantum Chemical Corporation USI Division 8805 N. Tabler Road Morris, IL 60450-9988 1298 Qynergy Corporation 3800 Osuna Road NE Suite 2 Albuquerque, NM 87109-4401 764 R.E. Skaggs 558 RAD/IRID 305 Ritchie Road Forestville, MD 20743 1245 RADEC ApS Sodalsvej 10 DK-8220 Brabrand Denmark 1109 Radiance Medical Systems, Inc. 13700 Alton Parkway, Suite 160 Irvine, CA 92618 559 Radiation International, Inc.

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560 Radiation Machinery Corporation 561 Radiation Materials Corporation 124 Calvary Street Waltham, MA 562 Radiation Resources, Inc. 24 Kulick Road Fairfield, NJ 07006 569 Radiation Safety & Nuclear Products (RSNP) 3589 West 500 South, Unit 2 Salt Lake City, UT 84104 563 Radioactive Sources Division of Baird-Atomics 1221 Radioisotope Centre Polatom 05-400 Otwock-Swierk , Poland 1216 RadioMed Corporation One Industrial Way Tyngsboro, MA 01879 763 Radium Chemical Company, Inc. 161 East 42nd Street New York, NY 10017 557 RADS S.L., Inc. 424 W. McNeese Street Lake Charles, LA 70605 564 RADX Corporation P.O. Box 19164 Houston, TX 77024 567 Randix Industries, Ltd. 7 Mear Road Holbrook, MA 02343 765 Ranger Engineering Corporation 3132 Bryan Street Fort Worth, TX 76110 1249 Rapiscan Systems Company

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3232 W. El Segundo Blvd. Hawthorne, CA 90250 1250 Rapiscan Systems Neutronics & Advanced Technologies Corp 2950 Patrick Henry Drive Santa Clara, CA 95054 1218 Rapiscan Systems Neutronics and Advanced Technologies Corporation 520 Almanor Avenue Sunnyvale, CA 94085-3533 1182 RC Tritec AC Speicherstrasse CH-9053 Teufen Switzerland 767 RCA Products P.O. Box 914 Waltham, MA 02154 1285 Real Time Instruments Pty Ltd. P.O. Box 6920 Mackay, MC Qld 4741 1086 Reed-Curtis 565 Republic Corporation 568 Research Appliance Company (RAC) Allison Park, PA 15101 1082 Reviss Services 175 East Hawthorn Parkway Suite 142 Vernon Hills, IL 60061 1042 Reviss Services (UK) Limited 6 Chilton Court Asheridge Road, Chesham Buckinghamshire HP5 2PX United Kingdom 1174 Reviss, P.A. Mayak 31 Lenin Street

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Ozyorsk, Chelyabinsk Region 456780 Russian Federation 696 Rexnord, Inc. 5103 W. Beloit Road Milwaukee, WI 53214 511 RGI Industriemessgerate GmbH D-7541 Straubenhardt 1 Benzstrabe 4, Postfach 16 Germany 769 RIA Products 1114 RITVERC GmbH 28, 2nd Murinsky Avenue 194021 St. Petersburg Russian Federation 697 Rixson-Firemark, Div. Yals Security, Inc 9100 W. Belmont Ave. Franklin Park, IL 60131 573 RMD Instruments, Inc. 44 Hunt Street Watertown, MA 02172 572 Robertshaw Controls Company P.O. Box 26544 Richmond, VA 23261 574 Rockwell International P.O. Box 4192 Anaheim, CA 92803 576 Ronan Engineering Company Measurements Division 8050 Production Drive Florence, KY 41042-3028 577 Ronan Engineering, Ltd. 84 Northline Road Toronto, ON

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Canada 412 Rosemount Kay-Ray/Sensall, Inc. 1400 Business Center Drvie Mount Prospect, IL 60056 1178 Roxar Flow Measurements AS P.O. Box 112 4065 Stavanger , Norway 1176 Roxar, Inc. 14701 St. Mary's Lane Suite 275 Houston, TX 77079 570 RS Holding (aka Reuter Stokes) 575 Ruoff & Sons, Inc. 1030 Rose Avenue Runnemede, NJ 08078 774 S - Tron 303 Ravendale Drive Mountain View, CA 94043 1236 SABIA, Inc. 2300 North Yellowstone Highway Idaho Falls, ID 83402 1320 SABIA, Inc. 15070 Avenue of Sciences Suite 200 San Diego, CA 92128 1005 Safenight Technologies, Inc. 2121 Electric Road Roanoke, VA 24018 579 Safety Light Corporation 4150-A Old Berwick Road Bloomburg, PA 17815 339 Saint-Gobain Crystals and Detectors

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A Division of Saint-Gobain Ceramics and Plastics 6801 Cochran Road Solon, OH 44139 241 Sanders Medical Products, Inc. 520 Bearden Park Circle Knoxville, TN 37919 778 Sandia National Laboratories 1515 Eubank, SE Alberquerque, NM 87185 583 Saphymo- Srat Paris France 771 Sargent-Welch Scientific Company 7300 Linder Avenue Skokie, IL 60077 584 Sarnia Inspection Company 1183 Savage Systems, Inc. 110 North Front Street Oak Grove, LA 71263 768 Scan Detectronic Laboratories A/S Plastvanenget 9 9560 Hadsund Denmark 485 Scan Detectronic Laboratories, Inc. 512 Danbury Road New Milford, CT 06776 232 Scan Technologies, Inc. 147 11th Avenue, Suite 300 South Charleston, WV 25303 469 Scan Technologies, Inc. 303 Jacobson Drive Rock Branch Industrial Park Poca, WV 25159 716 Scan Technologies, Inc.

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189 Leighs Grove Court P.O. Box 519 Grayson, GA 30017 379 Scantech International Pty Ltd. 143 Mooringe Avenue Camden Park, South Austrailia 5038 Australia 586 Schlumberger Technology Corporation 200 Gillingham Lane Sugar Land, TX 77478 773 Schwartz/Mann Jr. Mountain View Avenue Orangeburg, NY 10962 212 Science Applications International Corp. P.O. Box 2501 Oak Ridge, TN 37831 214 Science Applications International Corp. Sunneyvalle, CA 215 Science Applications International Corp. 2985 Scott Street Vista, CA 92081 216 Science Applications International Corp. Santa Clara, CA 217 Science Applications International Corp. Rockville, MD 772 Science Applications International Corp. 1030 McConville Road, Unit 7 Lynchburg, VA 24502 780 Science Applications International Corp. 2109 Air Park Rd. Albuquerque, NM 87106 590 Science Applications International Corp. (SAIC) 1257 Tasman Drive Sunnyvale, CA 94089 1212 Science Applications International Corporation

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16701 West Bernardo Drive San Diego, CA 92127 1069 Scienta Oy Ab Jorvas Hitech Center 02320 Jorvas Finland 677 Scientech, Inc. P.O. Box 118 Pullman, WA 99163 1107 Scientific Drilling International, Inc. 1100 Rankin Road Houston, TX 77073 593 Scientific Measurement Systems, Inc. 2201 Donley Drive Austin, TX 78758 775 Scientific Products 1430 Waukegan Road McGaw Park, IL 60085 647 Scintrex Limited 222 Snidercroft Road Concord, ON Canada 1306 Scintrex Trace Corporation 300 Parkdale Avenue Ottawa, ON K1Y 1G2 Canada 591 Sea Quest, Inc. 2151 Las Palmas Drive Carlsbad, CA 92008 587 Seaman Nuclear Corporation 7315 South First Street Oak Creek, WI 53154 1154 Seamen's Medical Solutions 200 Prosperity Drive Knoxville, TN 37932

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777 Searle Analytic, Inc. 2000 Nuclear Drive Des Plaines, IL 60018 589 Searle Diagnostics, Inc. 592 Security Engineering Company, Inc. P.O. Box 746 Clemmons, NC 27012 770 Sediment Instr. Research and Development, Inc. SIRAD Inc. Suite 511 Metro Center Building, 1518 5th Avenue Moline, IL 61265 594 Self-Powered Lighting, Ltd. 8 Westchester Plaza Elmsford, NY 10523 174 Sensor Applications, Inc. 737 Walker Road, Suite 1 P.O. Box 439 Great Falls, VA 22066 1189 Sentek Corporation 1160-B Alum Creek Drive Columbus, OH 43209 595 Sentex Sensing Technology, Inc. 553 Broad Avenue Ridgefield, NJ 07657 766 Shanghai Fenghua Radio Factory 238 Guang Xi Bei Road Shanghai China 1295 Shanghai Syncor Pharmaceuticals Co., Ltd. 528 Chung Dong Road Xin Zhuang Industry Zone Min Shanghai 201108 China 1192 Shenzhen CIC-QSA Global

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Building 7, No. 2 Road Nantou Guankou, Nanshan Di Shezhen, 518067 China 656 Shield Source, Inc. Route 2, Box 19C VFW Road Grasonville, MD 21638 682 Shield Source, Inc. Peterborough, ON Canada 600 Shimadzu Scientific Instruments, Inc. 7102 Riverwood Road Columbia, MD 21046 601 Shimadzu Seisakusho, Ltd. Kyoto Japan 1157 Sibel, Ltd. Arbuzov str. 1/1 Novosibirsk, Russia, 630117 Russian Federation 578 SIE, Inc. Route 5, P.O. Box 214 Fort Worth, TX 76126 172 Siemens Building Technologies, Inc. Cerberus Division 8 Fernwood Road Florham Park, NJ 07932 604 Siemens Gammasonics, Inc. Nuclear Medicine Division 2000 Nuclear Drive Des Plaines, IL 60018 1067 Siemens Medical Imaging Solutions USA, Inc. 810 Innovation Drive Knoxville, TN 37932

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237 Siemens Medical Solutions USA, Inc. Molecular Imaging 810 Innovation Drive Knoxville, TN 37932 605 Siemens Medical Solutions USA, Inc. Molecular Imaging 2501 Barrington Road Hoffman Estates, IL 60192-2061 606 Siemens Medical Solutions USA, Inc. X-Ray Division 685 Liberty Avenue Union, NJ 07083 602 Siemens Medical Systems, Inc. 186 Wood Avenue Iselin, NJ 08830 659 Siempelkamp Corporation 4041-A Kingston Court Marietta, GA 30067 607 Sigma Laboratories Systems, Inc. 1131 Signtex, Inc. 220 VFW Avenue Graysonville, MD 21638 603 Silva Sweden AB, Kuskvagen 4, S-191-47 Sollentuna Sweden 784 Simplimatic Engineering Company [SECO] P.O. Box 11709 Lynchburg, VA 24506 690 Sintermetallwerk Krebsoge Postfach 5100 D-5608 Radevormwald 1 Germany 1233 Sionex Corporation 8-A Preston Court

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Bedford, MA 01730 1163 Sirtex Medical Limited Unit D4, 25-27 Paul Street North North Ryde New South Wales 2113 Australia 1229 Sirtex Wilmington, LLC Unit 2-4 16 Upton Drive Wilmington, MA 01887 1187 Smiths Detection, Edgewood 2202 Lakeside Boulevard Edgewood, MD 21040 163 Smiths Detection, Inc. World Headquarters 30 Technology Drive Warren, NJ 07059 263 Smiths Detection, Inc. 2202 Lakeside Blvd. Edgewood, MD 21040 1122 Smiths Detection, Inc. 7030 Century Drive Mississuaga, ON L5N 2V8 Canada 1048 SMV America 8380 Darrow Road Twinsburg, OH 44087 1092 SMV International 41 rue Fourny ZI BP 112 78534 Buc France 609 Society Alcatel-Battery Paris

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France 1088 SODERN 20 Avenue Descartes - B.P 23 94451 Limeil Brevann Cedex France 610 Soiltest Inc. 2205 Lee Street Evanston, IL 60202 1175 Song Mark Enterprise Co., Ltd. No. 8 Lane, Sec 1, Nan Sun Road Lu Chu Hsiang, Taoyuan, Taiwan, China 613 Sonwill Distribution Center 100 Sonwill Drive Buffalo, NY 14225 1169 SORAD Ltd/CESIO Ltd. Radiova 1 10227 Prague Czech Republic 611 Sortex Company of America 612 Source Production and Equipment 113 Teal Street St. Rose, LA 70087-9691 614 Southwest Bio-Medical Systems 343 West Houston Street, Suite 206 San Antonio, TX 78205 1171 Sparton Electronics 30167 Power Line Road Brooksville, FL 34602 1197 Sparton Electronics 5612 Johnson Lake Road Deleon Springs, FL 32130 615 Spectra-Physics 3333 North First Street San Jose, CA 95134

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157 SPECTRO Analytical Instruments, Inc. 1515 North Highway 281 Marble Falls, TX 78754 779 Spire Corporation Patriots Park Bedford, MA 01730 1225 SRB Technologies (Canada) Inc. 320-140 Boundary Road Pembroke, ON K8A 6W5 Canada 585 SRB Technologies, Inc. 2580 Landmark Drive P.O. Box 5536 Winston-Salem, NC 27103 1277 SRI Instruments, Inc. 6440Sunset Corporate Drive Las Vegas, NV 89120 580 St. Louis Testing Laboratories, Inc. 2810 Clark Avenue St. Louis, MO 63103 1083 Stan Huber Consultants 200 N. Ceder Road New Lennox, IL 60451 1244 State Scientific Centre of Russia Research Institute of Atomic Reactors Division of Radionuclide Sources & Preparations Dimitrovgrad-10, Ulyanovsk Region 433510 Russian Federation 617 Statitrol 140 South Union Boulevard Lakewood, CO 80228 618 Statitrol Corporation 1030 West Ellsworth Avenue Denver, CO 80223 620 Stock Equipment Company

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731 Hanna Building Cleveland, OH 44115 689 Stock Equipment Company 622 Stocker & Yale, Inc. 32 Hampshire Road Salem, NH 03079 581 Strandberg Engineering Laboratories, Inc. 1302 North O'Henry Boulevard Greensboro, NC 27405 608 Stratec Eleckstronick GmBH Im Laemmle 2 7534 Birkenfeld 2 Germany 619 Sunburst Energy Systems, Inc. 1413-B Linda Vista Drive San Marcos, CA 92069 1198 Superior Energy Services, LLC 523 North Sam Houston Parkway East, Suite 200 Houston, TX 77060 1144 Surelite, Ltd. Priors Court, Priors Haw Road Weldon, Northants United Kingdom 623 Suunto OY 02920 Espoo 92 Finland 1071 Symbolic Displays, Inc. 1917 St. Andrew Place East Santa Ana, CA 92705 621 Syncor International Corporation 1141 Air Way Street Glendale, CA 91201 1113 Syncor Pharmaceuticals, Inc. 1313 Washington Avenue Golden, CO 80401

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1224 System & Electronics, Inc. 201 Evans Avenue St. Louis, MO 63136 1091 System Sensor de Mexico SA de CV Av. Valle del Cedro 1681 Parque Industrial Interm Ciudad Juarez 32570 Mexico 629 T.E.M. Instruments, Ltd. Crawley, Sussex United Kingdom 1024 Tapio Tech., Inc. Tekniikantie 12 FIN-02150 Espoo Finland 633 Tatabanyai Szenbanyak Haldex International Cooperation Bureau Hungary 393 Taylor Instrument Company Industrionics Division Sybron Corporation Succasunna, NJ 07876 631 Temco Oliver Springs, TN 37840 630 Tennelec, Inc. P.O. Box D Oak Ridge, TN 37830 1095 Tesla Vupjt 250 66 Zdiby Czech Republic 686 Test-ER, Inc. 225 Mitchell Court A10, Chesapeake Square Addison, IL 60101 783 Test-ER, Inc. 225 Mitchell Court A10, Chesapeake Square

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Addison, IL 60101 632 Texas Instruments, Inc. P.O. Box 1444 Houston, TX 77001 635 Texas Time, Inc. 759 109th Street Arlington, TX 76011 535 The Center of Instrument Engineering For Geophysics and Ecology Novosibirsk Russian Federation 248 The Cyclotron Corporation 950 Gilman Street Berkeley, CA 94710 1111 The Dow Chemical Company 2301 North Brazosport Boulevard Freeport, TX 77541 781 The DuPont Merck Pharmaceutical Company 331 Treble Cove Road North Billerica, MA 01862 1209 The Institute of Nuclear Physics and Chemistry of CAEP 64-2 Mianshan Road Mianyan, Sichuan 621900 Paraguay 247 The Isotope Factory State Institute of Applied Chemistry St. Petersburg Russian Federation 759 The Nucleus, Inc. 461 Laboratory Road Oak Ridge, TN 37830 1076 The Source, Inc. 2810 Siler Lane Sante Fe, NM 87505 698 The University of Georgia

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Department of Biochemistry Athens, GA 30602 645 Theragenics Corporation 5203 Bristol Industrial Way Buford, GA 30518 687 Theratronics International Limited P.O. Box 13140 Kanata, ON K2K 2B7 Canada 1287 Thermo EGS Gauging, Inc. 200 Research Drive Wilmington, MA 01887-4434 141 Thermo Electron Corporation 200 Hembree Park Drive Suite R Roswell, GA 30076 1062 Thermo Electron Corporation Thermo Electron RM&P 200 Hembree Park Drive Roswell, GA 30076 1219 Thermo Electron Corporation Radiation Measurement & Protection Division 26400 Broadway Avenue Oakwood Village, OH 44146 1258 Thermo Electron Corporation 11 West Thebarton Road Thebarton SA 5031 Australia 1097 Thermo Electron RM&P Poole Sopers Lane Poole Dorset, BH17 7ER United Kingdom 1030 Thermo Environmental Instruments, Inc. 8 West Forge Parkway

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Franklin, MA 02038 642 Thermo Finnigan LLC 2215 Grand Avenue Parkway Austin, TX 78728 1303 Thermo Fischer Scientific, Inc. 450 Fortune Boulevard Milford, MA 01757 1330 Thermo Fisher Scientific Messtechnik GmbH Frauenauracher Strasse 96 91056 Erlangen Germany 305 Thermo Gamma Metrics 10010 Mesa Rim Road San Diego, CA 92121 1046 Thermo Gamma Metrics 10010 Mesa Rim Road San Diego, CA 92121 1012 Thermo MF Physics Corp. 5074 List Drive Colorado Springs, CO 80919 1261 Thermo Niton Analyzers LLC 1130 Ten Rod Road North Kingston, RI 02852 1159 Thermo NITON Analyzers LLC 900 Middlesex Turnpike Building 8 Billerica, MA 01821-3926 634 Thermo Process Instruments, L.P. 1410 Gillingham Lane Sugar Land, TX 77478 1234 Thermo Scientific Corporation Environmental Instruments 27 West Forge Parkway Franklin, MA 02038 627 Thompson Consultants

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P.O. Box 653 Ruston, LA 71273 788 Thorn Security Limited Technology Center The Summit, Hanworth Road Sunbury-on-Thames, Middlesex, TW16 5DB United Kingdom 637 Tiecor, Inc. 1701 South Shackleford Road Little Rock, AR 72211 244 TLS Systems P.O. Box 42884 Tucson, AZ 85733-2884 793 TLS Systems Phoenix, AZ 270 TMA/Eberline 5635 Kircher Boulevard N.E. Alberquerque, NM 87109 639 TOSHIBA 528 Trace Analytical, Inc. PCP Division 2155 Indian Road West Palm Beach, FL 33409-3287 734 Tracerco 4106 New West Drive Pasadena, TX 77507 1204 Tracerco P.O. Box 1 Belasis Hall Technology Park Billingham, Cleveland, TS23 1LB United Kingdom 640 Tracer-Flo Industries Div. of TrioTech, Inc., 2040 N. Lincoln Burbank, CA

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641 Tracerlab 1054 Trans World Airlines (TWA), Inc. Inspection Department/NDT 9200 N.W. 112th Street Kansas City, MO 64153 418 Trijicon, Inc. 49385 Shafer Avenue P.O. Box 930059 Wixom, MI 48393-0059 1028 Trilux Technologies, Inc. 3900-C West Point Blvd Winston-Salem, NC 27103 644 Trio-Tech, International 355 Parkside Drive San Fernando, CA 91340 646 Troxler Electronic Labs, Inc. 3008 Cornwallis Road P.O. Box 12057 Research Triangle Park, NC 27709 1180 TruGlo, Inc. 710 Presidential Drive Richardson, TX 75081 636 TSI, Incorporated 500 Cardigan Road P.O. Box 64394 St. Paul, MN 55164 792 Tubescope VETCO Houston, TX 243 Tubescope VETCO International Houston, TX 1118 Tuboscope Vetco International, Inc. P.O. Box 808 2835 Holmes Road Houston, TX 77001 688 Tundra

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Division of AECL, Inc. 5251 Office Park Drive, Suite 401 Bakersfield, CA 93309 648 Twin City Testing Corporation 107-111 Gundry Street North Tonowanda, NY 14120 1093 Tyco Electronic Products Group 160 Billet Road Walthanstow London E17 5DR United Kingdom 320 Tyco Laboratories General Nucleonics Division 1156 Tyco Safety Products Westminster 91 Technology Drive Westminster, MA 01441 1129 U.S. Department of Army U.S. Army TACOM Life Cycle Mgmt Command/AMSTA-CS-C Rock Island, IL 61299-7630 277 U.S. Department of Energy P.O. Box 2008 Oak Ridge, TN 37831-6390 392 U.S. Department of Justice Federal Bureau of Investigation Washington, DC 20535 1155 U.S. Department of the Army AMSAM-TMD-SR Bldg. 5417 Redstone Arsenal, AL 35898-5000 153 U.S. Department Of The Army U.S. Army Armament Material Readiness Command Rock Island, IL 61201 154 U.S. Department Of The Army Cold Regions Research and Engineering Laboratory Corps of Engineers 72 Lyme Road

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Hanover, NH 03755-1290 156 U.S. Department Of The Army ATTN:AMCSF-P, 5001 Eisenhower Avenue Alexandria, VA 22333 520 U.S. Department Of The Army Office of Civil Defense The Pentagon Washington, DC 20310 470 U.S. Department of the Navy Naval Systems Comand Headquarters AIR-54042D Washington, DC 20361-5000 643 U.S. Department of Transportation Federal Highway Administration 6300 Georgetown Parkway McLean, VA 22101 652 U.S. Nuclear Corporation (No Longer in Business) 801 North Lake Street Burbank, CA 91503 654 U.S. Radium Company 1259 Route 46 Parsippany, NJ 07054 649 Ultra Electronics, Inc. Granada Hills, CA 91344 1200 Unertl Optical Company, Inc. 4620 W. Richmar Avenue Las Vegas, NV 89139 791 Unicam Analytical Systems Unicam Limited, York Street Cambridge, CB1 2PX United Kingdom 786 Unicam North America The Schraft Center 529 Main Street Boston, MA 02129

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790 Union Miniere Brussels Belgium 650 Unit Process Assemblies, Inc. Syosset, NY 11791 651 Unitec, Inc. 3990 South Mariposs Englewood, CO 80110 785 United Engineers Automation Division of Black, Sivalls & Bryson, Inc. 7455 East 46th Street Tulsa, OK 74145 787 United Scientific Corporation 1400 Steirlin Road Mountain View, CA 94042 655 United Technologies Corporation United Technologies Research Center (UTRC) Silver Lane East Hartford, CT 06108 657 Universal Security Instruments, Inc. Northwest Business Center 11407 Cronhill Drive, S Owings Mills, MD 21117 1177 UPA Technology 8969 Cincinnati-Columbus Road (513-755-1380) West Chester, OH 45069 1128 Uson, Ltd. 8640 North Eldridge Parkway Houston, TX 77041 1094 Ustav Pro Vyzkum Vyrobu A Vyuziti Radioisotopu (UVVVR) Institute for Res., Production and Uses of Radioisotopes Prague Czech Republic 1132 Vacuum Instrument Corporation

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2099 Ninth Avenue Ronkonkoma, NY 11779 658 Valco Instruments Company P.O. Box 55603 Houston, TX 77055 660 Val-Tron, Inc. Morrison, CO 80465 662 Varian Chromatography Systems 2700 Mitchell Drive Walnut Creek, CA 94598 1080 Varian Medical Systems 911 Hansen Way Palo Alto, CA 94303 1191 Varian Medical Systems Haan GmbH Bergische Strasse 16 D-42781 Haan Germany 168 Varian Medical Systems UK Ltd. Gatwick Road, Crawley West Sussex, RH10 2RG United Kingdom 661 Varian Medical Systems, Inc. 911 Hansen Way Palo Alto, CA 94304 385 Ventek, Inc PO Box 43527 Birmingham, AL 35243 664 Vicon Instrument Company Colorado Springs, CO 80901 666 Victoreen, Inc. 6000 Cochran Road Cleveland, OH 44139 789 Vigor, Bergeon Bestfit, B. Jadow & Sons, Inc. 53 West 23rd Street New York, NY 10010

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1134 ViTrax 660 South Jefferson Street Unit E Placentia, CA 92870 1260 VITS-America, Inc. 200 Corporate Drive Bradley Corporate Park Blauvelt, NY 10913 1231 Voith Paper 2200 N. Roemer Road Appleton, WI 54911-2337 1162 Wallac Oy Turku Finland 541 Wallac, Inc. 9238 Gaither Road Gaithersburg, MD 20877 1047 Walter Kidde Portable Equipment, Inc. 1394 South Third Street Mebane, NC 27302 665 Warrington Laboratories, Inc. 2113 Wells Branch Parkway, Suite 6700 Austin, TX 78728 1165 Web Research 7317 Cahill Road #261 Minneapolis, MN 55439-2080 1112 Web Research, Inc. 7317 Cahill Road, #251 Minneapolis, MN 55439 663 Wedding and Associates, Inc. 209 Christman Drive #2 Fort Collins, CO 80524 670 Westinghouse Electric Corporation 2519 Wilkens Avenue Baltimore, MD 21223

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1102 Westinghouse Hanford P.O. Box 1970 Richland, WA 49352 671 Weston/Schlumberger Kennedy Drive Archbald, PA 18403 673 Wiegand Evaporators, Inc. Oakland Center, 8940 Route 108 Columbia, MD 21045 684 Williston Elin Schiefe Barte II D3414 Hardengsen Germany 667 Wimpey Laboratories Beaconsfield Road Hayes Middlesex, UB4 OLS United Kingdom 681 Wing Corporation 215 Highland Avenue Westmont, NJ 08108 672 Wm. B. Wilson Manufacturing Co. P.O. Box 34627 San Antonio, TX 78233 1318 Worden Gravity Meter Company 2116 Thompson Highway Suite H1 Richmond, TX 77469 699 Wultex Machine Company, Ltd. Progress Works Ivy Street East, Aspley Huddersfield, HD5 9AF United Kingdom 669 Wultex U.S., Inc. 125 Commonwealth Drive, Thurnhill Industrial Park Warrendale, PA 15086

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1135 Xi'an System Sensor Electronics, Ltd. 28 Tuan Jie South Road Province of Shaanxi Xi'an 710075 China 674 X-Mas, Inc. Houston, TX 77001 676 Xontech, Inc. Environmental Systems Division 6862 Havenhurst Avenue Van Nuys, CA 91406 675 X-Ray Industries 173 Xsurius 1220 Avenida Acaso Camarillo, CA 93012 693 Yachting Electronic Services 597 Yale Security, Inc. P.O. Box 869 Monroe, NC 28111-0869 678 Yokogawa Corporation of America 4 Dart Road Newnan, GA 30265-1040 679 Yokogawa Electric Works, LTD. 4125 Shinjuku Center Building 1-25-1 Nishi Shinjuku, Shinjuku 163 Toyko Japan 680 Zikonix Corporation 224 Santa Ana Court Sunnyvale, CA 94086

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