PBS NewsHour | 'We need to know' more about Keystone oil pipeline leak, tribal chairman says PBS NewsHour The energy company TransCanada announced Thursday that it responded to a leak of approximately 5,000 barrels — or 210,000 gallons — of crude oil from its Keystone pipeline in northeastern South Dakota. The company said on its website that crews ... Keystone pipeline spills 210K gallons of oil Major Oil Leak Will Not Factor Into Decision To Expand Keystone Pipeline Here's where Keystone XL's giant oil spill ranks among the 20 biggest leaks this decade |