TransCanada's idea to convert its Mainline natural gas pipeline from Alberta to Ontario to one carrying heavy crude may well find support in an unlikely quarter — namely Alberta gas producers, who are bitter about the high tariffs charged by the company to send gas east because of the dwindling amounts the aging Mainline currently ships. At an industry gathering late last year in Toronto, gas producers ganged up on TransCanada and its proposal to further increase the Mainline tariffs at a time when it was clearly much cheaper for Eastern Canada to buy gas from such burgeoning — and geographically close — sources of gas as the MarceUus Shale (NGW Nov.21'11)
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