Sheriff: No injuries in Okla. refinery explosion

WYNNEWOOD, Okla. – Oklahoma authorities say a small explosion at an oil refinery has shaken the city of Wynnewood but no one was injured.

Thick smoke poured into the sky from a fire that followed the blast about 6:50 a.m. Sunday.

Garvin County Sheriff Larry Rhodes says some roads in the area of the Wynnewood Refining Co. were closed after the explosion but reopened within about an hour and a half.

Wynnewood Refining is owned by Denver-based Gary-Williams Energy.

The refinery processes about 55,000 barrels of crude oil each day, producing gasoline, propane, propylene, butane, fuel oils and solvents and employing about 185.

Wynnewood is about 65 miles southeast of Oklahoma City.