Until August http://framedintatnuck.com/professional-writing-services-india/ essay writing services online  While Canada is a major oil producer, its east-coast refineries are heavily dependent on expensive foreign oil shipped across the Atlantic. To cut costs, cheap crude, transported by rail from North Dakota and other shale oil plays, has become an increasingly attractive alternative. The Portland-Montreal Pipeline, Maine's only pipeline system, currently flows inland from Portland to Montreal and is unable to meet demand, leaving suppliers dependent on rail.