1 dead, 1 injured in Oklahoma refinery explosion Published September 29, 2012 WYNNEWOOD, Okla. - A sheriff says one person has died and another has been taken to the hospital by helicopter following an explosion at a refinery in Wynnewood. Garvin County Sheriff Larry Rhodes tells the The Oklahoman that the explosion Friday at Wynnewood Refinery was a unit used in the refining process. He wasn't sure if it was the boiler that exploded. Red Cross Regional Director Ken Garcia said volunteers were sent to the area to provide water and snacks for the firefighters. A portion of State Highway 17A and Highway 77 were shut down after the explosion. Officials didn't immediately return