BISMARCK, N.D. – North Dakota regulators say a cow is suspected of causing a spill of natural gas liquids near a tributary of the Little Missouri River.
The North Dakota Department of Health says a cow may have rubbed against a tank valve on Tuesday, spilling about 20 barrels of natural gas condensate near Sully Creek, in western North Dakota.
Condensate is a byproduct of natural gas production.
The agency says the site is owned by a subsidiary of Oneok Inc. based in Tulsa, Oklahoma. Regulators say cleanup is under way and booms have been put in Sully Creek as a precaution.
Neither the company nor regulators immediately returned calls seeking comment Thursday.
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