One worker died in a blast at the same West Virginia industrial plant where two people died last month, officials said.
The explosion Tuesday morning was at Midland Resource Recovery, a company based in Ontario, Canada, that odorizes natural gas, officials said.
Contractors at the facility outside Philippi were disassembling a 30-gallon (115-liter) tank, trying to render tanks safe from the previous explosion May 24 that killed two and injured one, said officials at the West Virginia Department of Environmental Protection in a preliminary report.
A preliminary report shows one other person suffered an injury and an unknown quantity of Mercaptan, the chemical used to give natural gas an odor, was spilled, the agency said.
A woman who answered the telephone at the company’s headquarters in Ontario declined to comment.
The Occupational Safety and Health Administration (OSHA) has begun an investigation. OSHA spokeswoman Lenore Uddyback-Fortson said the victim was an employee of Specialized Professional Services Inc. The company based in Washington, PA, handles hazardous material. Calls to the company were not immediately returned Tuesday.