SACUL (January 31, 2012)--Two workers were critically burned Tuesday in what evidently was an electrical explosion and fire at a biomass power plant in Sacul in East Texas, authorities said.

A dispatcher Nacogdoches County Sheriff's Office dispatcher said the accident was reported at around 8 a.m. Tuesday at the facility in Sacul.

A spokesman for Fagen Inc. of Granite Falls, Minn., which operates the unit, declined comment.

Dispatcher Jerry Heilmann said the accident evidently involves some type of electrical explosion, but the cause remains under investigation.

Heilmann said the fire has been extinguished.

Heilmann said two men were in critical condition as they were transported to a hospital.

Southern Power will own and operate the Nacogdoches Generating Facility once it goes into commercial operation later this year.

The general contractor, Fagen Inc. of Granite Falls, Minn., said the site has been closed for the investigation.

CEO Evan Fagen said the injured Fagen workers were receiving medical care.

The incident poses no threat to the plant site, he said.

A spokeswoman at Nacogdoches Memorial Hospital says both critically injured men were sent to the burn unit of Parkland Memorial Hospital in Dallas.