North America - Partial List

Pipeline Owning Companies

 Alliance Pipeline                                                                    B.C. Gas / Terasen Gas 
 Enbridge Pipelines    Conoco Canada
 Mobil Oil    Nova Chemicals
 Pacific Northern Gas    Petro Canada
 Sherritt International    Suncor Energy
 Syncrude Canada    TransCanada Pipeline
 Westcoast Energy / Duke Energy / Spectra
International - Partial List
Algeria - Cosider, Kanaghaz, GTP, Sonelgaz, Sonatrach, ENAC.  Kazakhstan - Arctic Construction, Hurricane Kumkol
Australia - McConnell Dowell  Kenya - Kenya Pipeline Company
Bangladesh - Castle Construction, Poles and Concrete  Malaysia - Petronas
Bolivia - Transredes  Mexico - ARB Ardenal / Techint / Angel Macias Garza / Compania    de Operaciones de Nitrogeno
Brazil - Techint  Pakistan - Sui Northern Gas, Sui Southern Gas
Chile - Techint  Qatar - Medgulf Construction

China - CNPC, Liaohe Number 1 Oilfield Construction Company,

CPPLB, Liaohe Number 2 Oilfield Construction Company, CPECC,

Zhongyuan Petroleum Exploration Bureau, Huabei Petroleum    Administration Bureau

Russia - Flint

Saudi Arabia - Schlumberger
South Africa - Hall Longmore

Venezuela - CANSPEC
Yemen - Nexen

Germany - Otto Wolff  
Ivory Coast - Foxtrot Int.