Columbia subject headings:
Harvard subject headings:
Gas industry--Canada, Western--History.
Natural gas pipelines--Canada, Western--History.
Petroleum industry and trade--Canada, Western--History.
Petroleum pipelines--Canada--History.
Westcoast Transmission Ltd.--History.
Princeton subject headings:
Gas industry--Canada, Western.
Natural gas pipelines--Canada, Western.
Petroleum industry and trade--Canada, Western.
Petroleum pipelines--Canada, Western.
Phillips, Ed, 1917-
Westcoast Transmission Ltd.