The West Virginia Department of Environmental Protection is investigating an incident at an Antero Resources well site in Doddridge County that burned two workers and sent them to a hospital around 10:30 a.m. Sunday, Oct. 27.

Two oil and gas workers were installing a new separator on a gas production unit at the Johnathon Davis Farm pad site and a condensate leak caused a flash fire, said Thomas Aluise, with the West Virginia DEP. One Antero employee received first degree burns to his arms and hands, along with a second degree burn to his arm. The employee underwent skin graft surgery at the West Penn Burn Center in Pittsburgh, Pa., said Antero Resources Regional Vice President Alvyn Schopp. The employee will continue to receive treatment at the burn center until Friday, Schopp estimated. Another Antero employee was transported to United Hospital Center in Bridgeport after he received first degree burns on his arms. He was treated, released, and returned to work on Monday, Schopp said. Schopp declined to release the names of the two employees.

Inspectors are working to determine an ignition source for the flash fire. The well pad is located off of Ramsey's Ridge Road near West Union. There are several wells drilled on the pad and at least two are producing, Aluise said.

The West Virginia Office of Oil and Gas cited Antero Resources in August 2013 for failing to maintain well control in connection with a July 7 well explosion at the New Milton, Doddridge County Ruddy Alt well pad. Five men received severe burns in that gas well explosion and two of the men later died as a result of their injuries.