"SEATTLE — As regulators in the region weigh the potential impacts of trains full of coal moving along the Columbia River and the shores of Puget Sound, trainloads of oil are quietly on the move."

"There are billions of barrels of oil in the Bakken shale formation – located in North Dakota and Montana mainly.

And some of that oil is now making its way to refineries in Puget Sound."

Ashley Ahearn reports for EarthFix/OPB/KUOW December 4, 2012. [2]