2R Engineering-Ravenna, Italy

AKER Solutions-Montreal, Quebec, Canada

Alliance Pipeline-Calgary, ALB, Canada

American Air Liquide-Houston, TX, USA

BP-Houston, TX, USA

Bangchak Petroleum-Bangkok, Thailand

Becthel Power-Frederick, MD, USA

Burckhardt Compression- Worldwide Locations

CTCI-Taipei, Taiwan

Dominion Transmission-Clarksburg, WV, USA

GE Oil & Gas-Worldwide Locations

SAMIR-Mohammedia, Morocco

Shaw, Stone, & Webster-Stoughton, MA, USA

Shell Appalachia-Wellesboro, Tioga Cty, PA, USA

Snamproghetti/Saipam S.p.A-Milan, Italy

Willbros-Houston, TX, USA