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ACCORD ENERGY SOLUTIONS LTD

SAND MONITORING SERVICES LTD

ESWL LTD

METROL TECHNOLOGY LTD

AIKEN GROUP LTD

DANA PETROLEUM PLC

BURNTISLAND FABRICATIONS LIMITED

PRODUCTION GEOSCIENCE LTD

INDUSTRIAL & MUNICIPAL PROJECTS LIMITED

WOOD GROUP PRODUCTION TECHNOLOGY LIMITED

CEBO UK LTD

TALISMAN ENERGY (U K) LTD

BROWN & ROOT AOC LIMITED

BP EXPLORATION SERVICES LTD

GEO CENTURY LTD

WELL OPS (U.K.) LTD

BJ SERVICES COMPANY (UK) LTD

ENSCO OFFSHORE U.K. LTD

QSERV LTD

CHEVRON NORTH SEA LTD

FINA EXPLORATION LTD

CORE TECHNICAL SERVICES LIMITED

NOBLE DRILLING (LAND SUPPORT) LTD

BUKOM GENERAL OILFIELD SERVICES LTD

KCA DEUTAG DRILLING LIMITED

PIERCE PRODUCTION CO LTD

KVAERNER OILFIELD PRODUCTS LTD

R&B FALCON (U.K.) LTD

HOUSTON ENGINEERS LIMITED

MERPRO GROUP LTD