BISMARCK, N.D.—Bitter cold weather is causing a rash of spills in the oil fields of North Dakota as well as a slowdown in production, regulators say.
North Dakota has seen multiple days of frigid weather with windchills at times reaching as low as minus 70 degrees (minus 57 Celsius) in its Bakken oil fields. Regulators say that strains workers and equipment, which can result in mishaps that lead to spills.
