One Person Killed in Electric Plant Explosion

BEVERLY, Ohio (AP) - An explosion that happened Monday while workers were unloading a coolant used for steam generators rocked an electricity-generating plant in southeast Ohio, killing one person and injuring about a dozen others, authorities said.

It was not clear what exploded during the unloading, said Melissa McHenry, a spokeswoman for American Electric Power. The coolant is used on steam generators at the coal-burning plant along the Muskingum River, she said.

Washington County Sheriff Larry Mincks previously said a boiler exploded, but it was unclear whether that was the case.

"A spark triggered an explosion of some type while a truck was being unloaded. We're not able to say if the truck exploded or a boiler exploded," he said.

The blast happened about 9:20 a.m. at the plant were 210 people work.

Two hospitals in nearby Marietta were treating a total of four people from the plant by late morning, but hospital officials had no information yet about the extent of their injuries.

AEP, one of the nation's largest power generators, has more than 5 million customers in 11 states.