FORT WORTH, Texas (AP) -- A fire that destroyed a Fort Worth chemical plant was ruled an accident Monday.
Four people were injured in the fire and explosion Thursday at Valley Solvents & Chemicals in an industrial area of north Fort Worth.
Lt. Kent Worley, a Fort Worth fire department spokesman, said the blast happened as workers unloaded methanol from a transport truck.
Worley said the extent of the damage made it difficult to determine the exact cause of the fire.
But based on witness interviews, it was determined to be an accident, he said.
''Our primary goal in the investigation is the determination of accidental or intentional,'' he said. ''Intentional means that there would be criminal charges.''
Nobody was killed in the intense fire, which sent a black plume of smoke into the air before burning itself out hours later.
Worley said investigators do not plan to examine the site, which will be cleaned up by a hazardous materials company.
The company's insurance providers planned to review the fire.
On the Net:
Valley Solvents & Chemicals: www.valleysolvents.com
