- ALSTOM
- BECHTEL
- FOSTER WHEELER
- SNAMPROGETTI
- FLUOR DANIEL
- KELLOGG
- AKER KVAERNER
- STONE & WEBSTER
- AMEC
- COSTAIN
- SIMON CARVES
- BATEMAN
- PETROFAC
- TECHNIP
- HALLIBURTON BROWN & ROOT
- HALCROW
- CHIYODA Corp.
- ABB
- LITWIN

ABU DHABI
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SAUDI ARABIA
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QATAR
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KUWAIT
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IRAN
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EGYPT
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LIBYA
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KAZAKHSTAN
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ALGERIA
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- Other references upon request