Popular Science | The Keystone pipeline just spilled another 210000 gallons of oil Popular Science The oil was likely diluted bitumen, or dilbit, a mixture of tarry oil and thinning agents that let the commodity flow through the pipe. But the drop in pressure indicated that instead of heading through on its appointed course, the oil was out of the ... Vox Sentences: Thousands of gallons of crude oil spill in South Dakota Keystone operator says oil pipeline leak controlled, no threat to public Energy Recap: Keystone Pipeline In The News After Oil Leak |