Electric
General Skidding International
Gevudo Afvalverwerking
Grootint B.V.
Heerema Havenbedrijf B.V.
ICI Holland B.V.
Instromet International N.V.
International Refinery Constructors
J.G.C. Corporation
J.G.C. Dordtse Engineering
John Brown E & C
Johnson Polymer
M.W. Kellog
Kemira
Kvaerner Process B.V.
Ver. Kesselwerke A.G.
King Wilkinson BV
Klöckner-Ina
K.T.I.
Kuwait Petroleum
Kuwait National Petroleum Company
Kuwait Controls Co.
LASMO Nederland B.V.
Lummus Alireza
Lurgi Mineralöltechnik G.m.b.H.
Matloub Trading Enterprises
McDermott Engineering
Mitsui Engineering
Mobil Oil
Montell B.V.
MW Kellog
NAM
Nat. Iranian Oil Company
NASH Benelux B.V.
Nat. Petroleum Ref. (PTY) Ltd
Nederlandse Aardolie Maatschappij. BV
Nederlandse Gasunie N.V.
NEM
Netherlands Refining Company
Noordgastransport
Norit B.V.
Norsk Hydro
Nuovo Pignone
N.V. Nederlandse Gasunie
Occidental Netherlands, Inc.
Occidental
Owens Corning S.A.
Oilfield Supply Center
PDVSA Services B.V.
Pennzoil B.V.
Petrofac Qatar
Petroken Petroquimica Ensenada SA
Petroleum Development Oman
Petromin
Pipeline Supply Establishment
Placid Interational Oil, Ltd.
PT Apeco / Stork
Purit B.V.