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PREMIER OIL EXPLORATION LTD

SHELL U.K.LTD

CHEVRON PRODUCTS UK LIMITED

PETROBRAS PARAGUAY DISTRIBUCION LIMITED

ACERGY M S LTD

SOL PUERTO RICO LTD

SOL ANTILLES & GUIANAS LTD

CHEVRON WEST INDIES LTD

SHELL INTERNATIONAL LTD

SHELL CARIBBEAN SERVICES LIMITED

SABAH SHELL PETROLEUM COMPANY LTD

BHP BILLITON PETROLEUM GREAT BRITAIN LTD