Authorities say three men were involved in repairing a tank -- at an oil drilling site, south of Myton -- when it exploded, late Tuesday night.
Tyson Boren, 28, of Neola was killed in the blast. Rusty Harris, 32, was hospitalized, with non-life threatening injuries. The third man was not injured.
The Uintah County Sheriff's Department says state and OSHA investigators are reviewing the scene now.
The site is operated by Newfield Production.