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| United States | ||
| ABB COMBUSTION ENGINEERING | Chattanooga | TN |
| ABB ENVIRONMENTAL SYSTEMS | Birmingham | AL |
| ABB VETCO GRAY | Houston | TX |
| ACME METALS | Riverdale | IL |
| ADRIAN INDUSTRIAL CONSTRUCTORS, INC. | Baytown | TX |
| AGA VENEZOLANA C.A. M-320 | Miami | FL |
| AHLSTROM MACHINERY SERVICES, INC. | Pell City | AL |
| AIMS COMMUNITY COLLEGE | Greeley | CO |
| AKRON TESTING LAB & WELDING SCHOOL | Barberton | OH |
| ALLIED SIGNAL, INC. | Geismar | LA |
| ALTAIRSTRICKLAND INC | League City | TX |
| ALTRAMAR INC | Long Beach | CA |
| ALYESKA PIPELINE SERVICE CO. | Anchorage | AK |
| AMARAL MECHANICAL, INC. | Gilroy | CA |
| AMERICAN ENERGY SERVICES INC. | Houston | TX |
| AMOCO RESEARCH CENTER | Naperville | IL |
| ANAMET LABORATORIES INC. | Hayward | CA |
| ANDERSON LABORATORIES | Greendale | WI |
| APV CREPACO, INC. | Lake Mills | WI |
| ARCO PRODUCTS CO. | Carson | CA |
| AREA VOTECH SCHOOL | Sedalia | MO |
| ASHLAND PETROLEUM CO. | Ashland | KY |
| ASME | New York | NY |
| AUSTIN INDUSTRIAL INC. | Houston | TX |
| AVLIS ENRICH PLANT PROJECT | Livermore | CA |
| AWS | Miami | FL |
| AZCO, INC. | Appleton | WI |
| B.E. PETERSON, INC. | Hingham | MA |
| BABCOCK & WILCOX | West Point | MS |
| BATTELLE, PNL | Richland | WA |
| BECHTEL | Gaithersburg | MD |
| BECHTEL | San Francisco | CA |
| BECHTEL CORPORATION | Houston | TX |
| BECHTEL SAVANNAH RIVER, INC. | North Augusta | SC |
| BELOIT CORPORATION | Dalton | MA |
| BETHLEHEM STEEL CORPORATION | Bethlehem | PA |
| BORMEC INC. | Martinez | CA |
| BROWN & ROOT | Houston | TX |
| BROWN & ROOT USA | Richmond | TX |
| BROWN FINTUBE CO. | Houston | TX |
| C&N GROUP/PLANT INSPECTION CO. | Pittsburg | CA |
| C.M. KEMP MFG. CO. | Glen Burnie | MD |
| CALHOUN COMMUNITY COLLEGE | Decatur | AL |
| CAMPANA INC. | Bonner Springs | KS |
| CAPE VO TECH SCHOOL | Cape Girardeau | MO |
| CAROLINA POWER & LIGHT CO | New Hill | NC |
| CCI INSPECTION SERVICES | Angleton, | TX |
| CEDARAPIDS INC | Cedar Rapids | IA |
| CINCINNATI GAS & ELECTRIC CO | Cincinnati | OH |
| CLAYCO-ACCURATE CONSTRUCTION CO. | St. Louis | MO |
| CNG TRANSMISSION CORP | Clarksburg | WV |
| COLORADO SCHOOL OF MINES | Golden | CO |
| COLUMBUS TECHNICAL INSTITUTE | Columbus | GA |
| COMMERCIAL UNION INSURANCE | Tulsa | OK |
| COMMERCIAL UNION INSURANCE CO. | Houston | TX |
| COMMONWEALTH EDISON CO | Chicago | IL |
| COMPUTER BAY | Kenner | LA |
| COMPUTER ENGINEERING | Blue Springs | MO |
| COMPUTER TECHNICAL SERVICES | Houston | TX |
| CONOCO | Humble | TX |
| CONSLER CORPORATION | Honeoye Falls | NY |
| CONSUMERS POWER | Covert | MI |
| DAVID TAYLOR RESEARCH CENTER | Annapolis | MD |
| DELPHI ENERGY & ENGINE MGMT. SYST. | Anderson | IN |
| DELTAK CORPORATION | Minneapolis | MN |
| DEMARCO WELDING SERVICES | Metairie | LA |
| DRESSER-RAND COMPANY | Painted Post | NY |
| DUPONT | Coopersburg | PA |
| DUPONT | Pass Christian | MS |
| EG&G ENERGY MEASUREMENTS | Pleasanton | CA |
| EIRICH MACHINES INC | Gurnee | IL |
| ENERGY OPERATIONS INC | Russelville | AR |
| ENTEX FABRICATION, INC. | Iowa Park | TX |
| ENVIRONMENTAL ELEMENTS CORPORATION | Baltimore | MD |
| ENVIRONMENTAL EQUIPMENT SERVICE CORP. | New Albany | IN |
| ETMS | Auburn | CA |
| EXPLOSIVE FABRICATORS | Louisville | CO |
| EXXON CHEMICAL | Baton Rouge | LA |
| EXXON CHEMICAL AMERICAS | Baytown | TX |
| EXXON PRODUCTION RESEARCH | Houston | TX |
| EXXON USA | Green River | WY |
| FABSCO INC | Sapulpa | OK |
| FABWELL CORPORATION | Tulsa | OK |
| FACTORY MUTUAL ENG. | Bellevue | WA |
| FIKE CORPORATION | Blue Springs | MO |
| FINA OIL AND CHEMICAL CO. | Big Spring | TX |
| FISHBURNE INTERNATIONAL, INC. | Arden | NC |
| FISHER CONTROLS INTERNATIONAL INC. | Marshalltown | IA |
| FLANDERS FILTERS INC | Washington | NC |
| FLUOR DANIEL | Calvert City | KY |
| FLUOR DANIEL INC | Deer Park | TX |
| FMC CORPORATION | Princeton | NJ |
| FMC CORPORATION | Houston | TX |
| FMC CORPORATION CTC DIVISION | Santa Clara | CA |
| FOLEY COMPANY | Kansas City | MO |
| FORMOSA PLASTICS CORP. | Point Comfort | TX |
| FOSTER WHEELER CORPORATION | Clinton | NJ |
| FOX VALLEY TECHNICAL COLLEGE | Appleton | WI |
| FRAMATOME TECHNOLOGIES | Lynchburg | VA |
| FREEPORT SULPHUR | Pecos | TX |
| GE ENVIRONMENTAL SVCS INC. | Lebanon | PA |
| GE POWER GENERATION ENGINEERING | Greenville | SC |
| GE SILICONES | Waterford | NY |
| GENERAL DYNAMICS | Arlington | TX |
| GENERAL ELECTRIC CO. | Schenectady | NY |
| GENERAL PHYSICS CORPORATION | North Olmstead | OH |
| GEON COMPANY | Laporte | TX |
| GILCO ENGINEERING INC. | Rancho Cucamonga | CA |
| GOULDS PUMPS INC. | City of Industry | CA |
| GPU CORPORATION | Middletown | PA |
| GROSSMONT UNION H.S. DISTRICT | La Mesa | CA |
| GSE | Burlington | MA |
| GULF COPPER & MANUFACTURING CORP. | Port Arthur | TX |
| HARTFORD STEAM BOILER | Lisle | IL |
| HARTFORD STEAM BOILER CO. | Hartford | CT |
| HAWAIIAN ELECTRIC COMPANY | Pearl City | HI |
| HENKELS & MCCOY, INC. | Oreland | PA |
| HENNEPIN TECHNICAL COLLEGE | Brooklyn Park | MN |
| HYUNDAI ENGINEERING & CONSTRUCTION CO | Englewood Cliffs | NJ |
| IBEX | Calvert City | KY |
| IESCO | San PEdro | CA |
| IMC AGRICO | St. James | LA |
| INDUSTRIAL CONTRACTORS INC. | Evansville | IN |
| INLAND CONTAINER | Rome | GA |
| INTER-WORLD CORP. | San Diego | CA |
| INTERNAT'L POWER SERVICES CORP. | Delta | UT |
| INTERNATIONAL MAINTENANCE | Sulphur | LA |
| IRONWORKS FABRICATION SERVICE | Cross Lanes | WV |
| ISP CHEMICALS INC. | Calvert City | KY |
| ITT RAYONIER INC. | Port Angeles | WA |
| J.J. WHITE, INC. | Philadelphia | PA |
| J.S. ALBERICI CONSTRUCTION CO., INC. | St. Louis | MO |
| JACOBS ENGINEERING GROUP | Baton Rouge | LA |
| JANUS INCORPORATED | Walnut Creek | CA |
| JM INDUSTRIES | Houston | TX |
| JOHN ZINK CO. | Tulsa | OK |
| JWP ENERGY PRODUCTS INC | Coeur D'Alene | ID |
| KAISER ALUMINUM & CHEMICAL CORPORATION | Gramercy | LA |
| KANSAS CITY POWER & LIGHT CO. | Kansas City | MO |
| KANSAS CITY POWER & LIGHT CO. | Kansas City | MO |
| KATEMA, INC. | Grand Prairie | TX |
| KEN-WELD CO.,INC. | Worcester | MA |
| KIMBERLY CLARK CORPORATION | Mobile | AL |
| KIMBERLY-CLARK TISSUE CO. | Mobile | AL |
| KINETICS TECHNOLOGY INTL CORP | San Dimas | CA |
| KIRKWOOD COMMUNITY COLLEGE | Cedar Rapids | IA |
| KRUEGER ENG. & MFG. CO., INC. | Houston | TX |
| LABOR & INDUSTRIES WAREHOUSE | Olympia | WA |
| LAKESHORE TECHNICAL COLLEGE | Cleveland | WI |
| LAREDO WELDER SUPPLY CO. | Laredo | TX |
| LENOIR COMMUNITY COLLEGE | Kinston | NC |
| LETOURNEAU, INC. | Longview | TX |
| LEWIS CLARK STATE COLLEGE | Lewiston | ID |
| LOCKHEED MARTIN IDAHO TECHNOLOGIES CO. | Idaho Falls | ID |
| LONGVIEW FIBRE COMPANY | Longview | WA |
| LOS ANGELES DEPT OF WATER & POWER | Valencia | CA |
| M. WEEKS WELDING LAB TESTING | Nederland | TX |
| MAFI-TRENCH CORP. | Santa Maria | CA |
| MARCH METAL, INC. | Hayward | CA |
| MARTIN MARIETTA ENERGY SYS. | Oak Ridge | TN |
| MARTIN MARIETTA ENERGY SYSTEMS, INC. | Oak Ridge | TN |
| MASONEILAN - DIV. DRESSER INDUSTRIES | Avon | MA |
| MAYLAND COMMUNITY COLLEGE | Newland | NC |
| METALFORMS, INC. | Cheek | TX |
| MIDCO TOOL SALES | Livonia | MI |
| MIDLAND COLLEGE | Midland | TX |
| MIDSTATES PIPE FABRICATING, INC. | El Dorado | AR |
| MILWAUKEE AREA TECH. COLLEGE | Milwaukee | WI |
| MILWAUKEE AREA TECHNICAL COLLEGE | Milwaukee | WI |
| MILWAUKEE AREA TECHNICAL COLLEGE | Milwaukee | WI |
| MITTERNIGHT BOILER WORKS | Satsuma | AL |
| MOBIL CHEMICAL COMPANY | Beaumont | TX |
| MOBIL E&P TECHNICAL CENTER | Dallas | TX |
| MOBIL OIL CORP. | Joliet | IL |
| MODERN WELDING CO INC | Owensboro | KY |
| MQS INSPECTION INC. | Indianapolis | IN |
| McSHANE, INC. | Baltimore | MD |
| NASA | Kennedy Space Center | FL |
| NASA DRYDEN FLIGHT RSRCH CTR | Edwards | CA |
| NASA LANGLEY RESEARCH CENTER | Hampton | VA |
| NASA Langley Research Center | Hampton | VA |
| NATIONAL-OILWELL | San Marcos | TX |
| NATIONAL-OILWELL | Garland | TX |
| NAVAL COMPUTER & TELECOMUNICATIONS | Woodbridge | VA |
| NELES-JAMESBURY, INC | Worcester | MA |
| NEW HAMPSHIRE TECH. COLLEGE | Manchester | NH |
| NEW YORK POWER AUTHORITY | Lycoming | NY |
| NOOTER CORPORATION | St. Louis | MO |
| NORTH TECH ED CENTER | Riviera Beach | FL |
| NORTHEAST WI TECH COLLEGE | Marinette | WI |
| NORTHERN STATES POWER | Minneapolis | MN |
| NORTHWEST PIPELINE CORPORATION | Salt Lake City | UT |
| NUWES | Keyport | WA |
| OFFENHAUSER CO. | Houston | TX |
| OHMSTEDE INC. | St. Gabriel | LA |
| PACIFIC GAS & ELECTRIC CO. | Antioch | CA |
| PACIFIC GAS & ELECTRIC CO. | San Francisco | CA |
| PACIFIC MECHANICAL CORPORATION | Concord | CA |
| PANAMA CANAL COMMISSION | APO Miami | FL |
| PASADENA TANK COMPANY | Houston | TX |
| PCI ENERGY SERVICES INC | Lake Bluff | IL |
| PENNSYLVANYA POWER & LIGHT CO. | Allentown | PA |
| PENRECO, DIV. OF PENNZOIL | Karns City | PA |
| PETROFAC INC. | Tyler | TX |
| PIONEER MARINE PROCUREMENT | Virginia Beach | VA |
| PLASMA CONSULTANTS, INC. | Willowick | OH |
| PM MECHANICAL, INC. | Las Vegas | NV |
| PRECISION FABRICATING & CLEANING, INC. | Cocoa | FL |
| PROCTER & GAMBLE CO. | Cincinnati | OH |
| PUBLIC SERVICE CO OF COLORADO | Denver | CO |
| QUANTUM CHEMICAL COMPANY | Morris | IL |
| RANOR, INC. | Westminster | MA |
| RAWLINS HIGH SCHOOL | Rawlins | WY |
| RAYTHEON | Las Vegas | NV |
| REDMAN EQUIPMENT & MFG CO. | Torrance | CA |
| REXENE CORPORATION | Odessa | TX |
| RODE WELDING SERVICE | Elk Grove Village | IL |
| ROHM & HAAS KY. INC. | Louisville | KY |
| ROHM & HAAS TEXAS, INC. | Deer Park | TX |
| ROSEMOUNT INC. | Eden Prairie | MN |
| S & B ENGINEERS & CONSTRUCTORS, LTD. | Houston | TX |
| SANDIA NATIONAL LABS | Livermore | CA |
| SBCC | Santa Barbara | CA |
| SGT LIMITED | Jensen Beach | FL |
| SHELL DEVELOPMENT CO | Houston | TX |
| SHELL OFFSHORE INC. | New Orleans | LA |
| SHELL OIL CO. | Martinez | CA |
| SIERRA PACIFIC POWER CO. | Valmay | NV |
| SIVYER STEEL CORP | Bettendorf | IA |
| SMD METAL FABRICATION | Mechanic Falls | ME |
| SMUD | Sacramento | CA |
| SOFTWARE SPECTRUM | Garland | TX |
| SOUTH TECHNICAL EDUCATION CENTER | Boynton Beach | FL |
| SSC LABS | Dallas | TX |
| ST. CLOUD STATE UNIVERSITY | St. Cloud | MN |
| ST. JOHNS RIVER POWER PARK | Jacksonville | FL |
| STANDARD BOILER & TANK COMPANY | Riverdale | IL |
| STEWART & STEVENSON SERVICES, INC. | Houston | TX |
| STUDIO IMASA | Paducah | KY |
| SUPERIOR HARD-SURFACING CO | Tulsa | OK |
| SYNCRO WELD, INC. | New London | OH |
| SouthernTier Mechanical Corp. | Jamestown | NY |
| T.H. PICKENS | Aurora | CO |
| TAMPA ELECTRIC CO | Tampa | FL |
| TAMPELLA POWER CORPORATION | Williamsport | PA |
| TCB INDUSTRIES, INC. | Venice | LA |
| TECH-WELD, INC. | Houston | TX |
| TECHMASTER ENGINEERING INC | Marlton | NJ |
| TEXACO INC. | Anacortes | WA |
| TEXAS EASTMAN CO. | Longview | TX |
| TEXAS SYSTEMS & CONTROLS, INC. | Houston | TX |
| THE HANOVER COMPANY | Alleyton | TX |
| THE TOLEDO EDISON COMPANY | Oak Harbor | OH |
| THE TRANE CO. | Lacrosse | WI |
| TIMEC SOUTHERN CALIFORNIA, INC. | Carson | CA |
| TOLEDO EDISON COMPANY | Oak Harbor | OH |
| TOSCO REFINING CO./DIV. OF TOSCO CORP. | Martinez | CA |
| TOTAL PETROLEUM INC | Ardmore | OK |
| TOTAL PETROLEUM, INC. | St. Louis | MI |
| TRIDENT TECHNICAL COLLEGE | N. Charleston | SC |
| TULSA WELD TESTING & INSP. | Tulsa | OK |
| TVA | Decatur | AL |
| TVA | Soddy Daisy | TN |
| TVA | Chattanooga | TN |
| U.S. ARMY CORPS OF ENGINEERS | Portland | OR |
| U.S. CONTRACTORS INC. | Clute | TX |
| UCI CONSTRUCTION | Martinez | CA |
| UNICO | Benicia | CA |
| UNION BOILER CO | Nitro | WV |
| UNION BOILER CO | Nitro | WV |
| UNION CARBIDE CORPORATION | Port Lavaca | TX |
| UNION ELECTRIC COMPANY | Fulton | MO |
| UNITED STATES ENRICHMENT CORP | Piketon | OH |
| UNIVERSITY OF ALASKA SOUTHEAST | Ketchikan | AK |
| UNOCAL CHEMICAL DIVISION | Kenai | AK |
| UNOCAL ENERGY RESOURCES | Kenai | AK |
| US ARMY TACOM | Warren | MI |
| USA TACOM ARDEC CCAC | Watervliet | NY |
| V.I.INDUSTRIAL MAINTENANCE CORP. | U.S. Virgin Islands | |
| V.R. TESCO INC. | Schaumburg | IL |
| VAN/OS MACHINE WORKS | St. Louis | MO |
| WATERVLIET ARSENAL | Watervliet | NY |
| WELDER TESTING, INC. | Pasadena | TX |
| WELDING SERVICES INC | Norcross | GA |
| WESTERN WYOMING COLLEGE | Rock Springs | WY |
| WESTERN WYOMING COLLEGE | Rock Springs | WY |
| WESTINGHOUSE ELECTRIC CORP. | Alabaster | AL |
| WESTINGHOUSE SAVANNAH RIVER CO | Aiken | SC |
| WESTLAKE PETROCHEMICALS | Sulphur | LA |
| WESTVACO | Covington | VA |
| WEYERHAEUSER COMPANY | North Bend | OR |
| WFM CORPORATION | Amherst | NH |
| WILSON & ASSOCIATES, INC. | Oak Ridge | TN |
| WOLF CREEK NUCLEAR OPERATIONS CORP. | Burlington | KS |
| WORLD TESTING, INC. | Mt. Juliet | TN |
| WORLDWIDE SERVICE TECHNOLOGIES | Clearwater | FL |
| Z & P CONSTRUCTION CO. | Miami | FL |
| ZURN INDUSTRIES, INC. | Erie | PA |
| Canada | ||
| ATOMIC ENERGY CONTROL BOARD | Ottawa | ON |
| BRINGAS TECHNOLOGY SEMINARS | Edmonton | AB |
| CAMOSUN COLLEGE | Victoria | BC |
| DOW CHEMICAL CANADA INC. | Fort Saskatchewan | AB |
| DSA WELDING CONSULTING | Calgary | AB |
| DUPONT CANADA INC. | Maitland | ON |
| EASTERN COMMUNITY COLLEGE | Burin | NF |
| ESSO PETROLEUM CANADA | Jarvis | ON |
| GULF CANADA RESOURCES LTD. | Calgary | AB |
| HUSKY OIL BI-PROVINCIAL UPGRADER | Lloydminster | SK |
| INCO LTD | Coppercliff | ON |
| KVAERNER CHEMETICS INC. | Don Mills | ON |
| LAKELAND COLLEGE | Vermilion | AB |
| MAC WELDING | Sarnia | ON |
| MANITOBA DEPARTMENT OF LABOR | Winnipeg | MB |
| MARINE INSTITUTE | Potrugal Cove | NF |
| MCCOLL-FRONTENAC INC/PO 02-2-06190-011 | Jarvis | ON |
| MINISTRY OF CONSUMERS & COMM. RELATIONS | Etobicoke | ON |
| NBCC MONCTON | Moncton | NB |
| NORTHERN ALBERTA INSTITUTE OF TECHNOLOG | Edmonton | AB |
| NORTHERN COLLEGE | Kirkland Lake | ON |
| NOVA CORPORATION OF ALBERTA | Calgary | AB |
| NOVA CORPORATION OF ALBERTA | Calgary | AB |
| ONTARIO MCCR TECHNICAL STANDARDS | Etobicoke | ON |
| PCS FABRICATION TECH OUTREACH SERVICES | Nepean | ON |
| QUANTEL VECO ENG LTD | Tunis | ON |
| SAIT | Calgary | AB |
| SHARIK CONSULTING LTD | Hylo | AB |
| SUNCOR INC. | Fort McMurray | AB |
| SUNNY CORNER ENTERPRISES INC | Miramichi | NB |
| TAYLOR FORGE CANADA | Niagara Falls | ON |
| TRANSCANADA PIPELINES | Calgary | AB |
| TREMCAR INC. | Iberville | PQ |
| UNIVERSITE DU QUEBEC | Montreal | PQ |
| UNIVERSITY COLLEGE OF CAPE BRETON | Sydney | NS |
| WELDING INSTITUTE OF CANADA | Oakville | ON |
| ZIRCATEC PRECISION IND. INC. | Port Hope | ON |
| Other Countries | ||
| PHILLIPS | Tananger | NORWAY |
| ACERO FABRICANTES, C.A. | Maracaibo | VENEZUELA |
| AL-YUSR TOWNSEND & BOTTUM CO. | Jubail Ind. City | SAUDI ARABIA |
| ALCAN JAMAICA CO | Kingston | JAMAICA |
| ANSALDO ENERGIA SPA | Milano | ITALY |
| APPLIED MACHINERY CO., LTD. | Bangkok | THAILAND |
| BECHTEL | London | ENGLAND |
| BELLELI SPA | Frassino (Ma) | ITALY |
| BUREAU VERITAS | Abu Dhabi | U.A.E. |
| CENTRAL TRILLO I | Madrid | SPAIN |
| COMETARSA S.A. | Buenos Aires | ARGENTINA |
| COMMERCIAL COMPONENTS | Irvine, Ayrshire | SCOTLAND |
| COVEIN S.A. | Caracas | VENEZUELA |
| EUROPEAN SPACE AGENCY | Noordwyk | NETHERLANDS |
| FABRICA DE SAN CARLOS, S.A. | San Fernando - Cadiz | SPAIN |
| FBM HUDSON ITALIANA S.P.A. | Terno D'Isola (BG) | ITALY |
| FMC SOUTHEAST ASIA PTE LTD | Singapore | SINGAPORE |
| FPH CONSULTING SERVICES | Vereeniging | SOUTH AFRICA |
| GE INTERNATIONAL MEXICO | Col. Santa Fe | MEXICO |
| GEA AIRCOOLED SYSTEMS PTY LTD | Johannesburg | SOUTH AFRICA |
| GENERADORES DE VAPOR FOSTER WHEELER,S.A | Tarragona | SPAIN |
| GLM INSPECTION SDN BHD | Kuala Lumpur | MALAYSIA |
| GODREJ & SOYCE MFG. CO. LTD. | Vikhroli, Mumbai | INDIA |
| HARALD MEYER VDI | Frankfurt am Main | GERMANY |
| HITACHI ZOSEN SINGAPORE LTD | Singapore | SINGAPORE |
| HUB LIMITED | Douglas | U.K. |
| ICICT | Barcelona | SPAIN |
| INASMET | San Sebastian | SPAIN |
| INSPECTION & QA SERVICES AB | Abbekas | SWEDEN |
| INSPEQ INGENIERIA LTDA | Santa Fe De Bogota | COLOMBIA |
| INSUTEC C.A. | Caracas | VENEZUELA |
| IRAN ITOK INSPECTION | Tehran | IRAN |
| ISTITUTO ITALIANO SALDATURA | Genova | ITALY |
| KOREA INST. OF NUCLEAR SAFETY | Daejeon | KOREA |
| KOREA POWER ENGINEERING CO | Seoul | SOUTH KOREA |
| KUWAIT NATIONAL PETROLEUM CO. (K.S.C.) | Ahmadi | KUWAIT |
| KVAERNER SINGAPORE PTE LTD | Jurong | SINGAPORE |
| LUBEREF | Jeddah | SAUDI ARABIA |
| MCCLELLAND-SUHAIMI LTD. | Dammam | SAUDI ARABIA |
| MECHALLOY (S.E.A.) INDST. CO. | DBS Land | SINGAPORE |
| METHANEX CHILE LIMITED | Punta Arenas | CHILE |
| NATIONAL METHANOL COMPANY LTD. | Jubail | SAUDI ARABIA |
| P. GALIMBERTI & CIA. S.A. | Buenos Aires | ARGENTINA |
| PELMECH, PTP | Pretoria | SOUTH AFRICA |
| PETRONAS PENAPISAN | Kemaman | MALAYSIA |
| PETROX S.A. | Concepcion | CHILE |
| PLT ENGINEERING LTD | Slough, Berks | ENGLAND |
| PT RADIANT UTAMA | Jakarta | INDONESIA |
| PT SANGGAR SARANA BAJA | Jakarta | INDONESIA |
| RIG ENGINEERING | Aberdeenshire | U.K. |
| SAIW | Johannesburg | SOUTH AFRICA |
| SAMSUNG ENGINEERING & CONSTR. | Seoul | KOREA |
| SARPOM S.P.A REFINERY | S.Martino Di Trecate | ITALY |
| SASOL CHEMICAL INDUSTRIES | Sasolburg | SOUTH AFRICA |
| SAUDI BINLADIN GROUP | Jeddah | SAUDI ARABIA |
| SGS ENGINEERING INSP. CO | Transvaal | SOUTH AFRICA |
| STORK WESCAR N.V. | Willemstad, Curacao | NL ANTILLES |
| STUDIO IMASA | Seggiano Pioltello | ITALY |
| THE BAHRAIN NATIONAL OIL CO. | Awali | BAHRAIN |
| THE WELDING INSTITUTE | Abington, Cambridge | U.K. |
| TRINITY INDUSTRIES DE MEXICO | Col. Ind. Vellejo | MEXICO |
| UNIMIT ENGINEERING CO. LTD. | Prapradaeng | THAILAND |
| UNIVERSIDAD SANTA MARIA | Valparaiso | CHILE |
| W.E.SMITH ENGINEERING PTY LTD | Coffs Harbour, N.S.W | AUSTRALIA |
| WALTHON WEIR PACIFIC, S.A. | Zaragoza | SPAIN |
| WOODSIDE OFFSHORE PETROLEUM | Perth, W.A. | AUSTRALIA |
| YORK INTERNATIONAL SA DE CV | Durango | MEXICO |
