An afternoon explosion claimed the lives of two workers at a production facility in Cumberland, W.Va., an official from AL Solutions Inc., told FoxNews.com moments before a press conference. An additional worker has been hospitalized.

The cause of the blast remains unknown, said Ken Kline, the chief financial officer for AL Solutions Inc. A fire remains raging in the facility.

"Our main concern is with our employees and their families," said Kline, who was 400 yards from the blast. "It's unclear if family members of the victims are informed about the blast."

It was a full fleet response from volunteers at the New Cumberland Fire Department, which deployed eight fire trucks to the facility. The plant is about three minutes from the fire house, said an employee.

AL Solutions, formerly called Jamegy Inc., develops additives for the aluminum industry.
In 2006, an explosion and fire at the plant killed a worker in the production building.
Kline says the blast happened in the main production building. He says the plant employs about 25 people.

With The Associated Press