A fire at the Holly Frontier oil refinery in west Tulsa sent plumes of thick black smoke into the air early Monday evening.

A fire at the Holly Frontier refinery sent black smoke into the air across Tulsa on Monday. The oil refinery is located at South Union Avenue and W. 17th Street. The fire was visible on a News On 6 ...

A fire at the Holly Frontier refinery sent black smoke billowing into the sky above Tulsa on Monday. The oil refinery is ...

Each year, the American Kennel Club recognizes five dogs from across the country that are improving the lives of people in ...

A railroad union is pushing for legislation following a seven car derailment in west Tulsa on Thursday. TULSA, Okla. — A ...