The operator of the Keystone oil pipeline has restarted the system after a spill onto farmland in North Dakota last week shut down the line.

Workers have recovered thousands of gallons of crude oil from an underground pipeline spill on North Dakota farmland, the ...

HOUSTON, March 21 (Reuters) - Oil prices will likely slip this year, the director of North Dakota's state oil regulator ... permit for an offshore drilling project, the company said on Saturday.