Official: Montana plant fire no longer a threat

The Alberta, Canada-based owner of Custom Carbon Processing has made no public statements about the explosion and fire. Peter Margiotta, the president and CEO of parent company Green Oasis Environmental Inc., was headed to the site Monday.

The company did not plan to release any information on the fire or the injured workers until Margiotta sees firsthand what happened, investor relations spokesman Stephen Taylor said.

"Once he gets further information, then he will be disclosing it to the public," Taylor said.

Occupational and Safety Health Administration investigators were also headed to the site, Schneider said.

Custom Carbon Processing on its website said it uses a complex process to convert residual wastes, called slop oil, from the oil producing process that would otherwise be discarded and turns it into pipeline-grade oil the company sells to oil buyers.

The facility eight miles outside Wibaux, at the western end of the Bakken oil boom, was a former oil well and then a disposal well. It opened in September as Michels Salt Water Disposal and Oil Reclamation Facility capable of reclaiming slop oil.