Oil by rail called dirtier

Opponents of the Keystone XL pipeline should consider one consequence of delays in building the oil pipeline – an increase in dirtier and more dangerous rail transport, a TransCanada Corp. executive said Thursday.

Alex Pourbaix, president of energy and oil pipelines at the Calgary-based pipeline and utility company, says although rail has an important role to play in moving oilsands crude to market, there are downsides to consider.

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