From there, you've still got to break down your oil sands supply curve, which means looking at all the potential production, and the costs of getting those barrels to market. (macleans.ca)
This study demonstrates the critical links that exist between the ecology of the reefs that surround these islands and the processes of sand supply. (sciencedaily.com)
However, it's certainly incorrect to assume that the existence of single pipeline impacts all oil sands supply costs, or that not allowing it would render that oil supply unavailable at any price. (macleans.ca)