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ROCKMART — Officials at Meggitt Polymers and Composites facility say that they are trying to determine the cause of an explosion at the plant that killed one person Thursday.

Rockmart resident Elaine Davidson, 56, was killed in the blast at the Goodyear Avenue facility.

Plant officials say she was killed when a 36-inch in diameter autoclave suddenly released its pressure. An autoclave is a strong, pressurized, steam-heated device used in laboratory experiments or sterilization.

According to Meggitt spokesman John Green, no one else was hurt in the incident.

“The area and the autoclave involved in the incident have been shut down and secured and we are now conducting a thorough investigation,” Green said. “OSHA has been notified of the incident and will be conducting its investigation.”

According to the Polk County Chamber of Commerce, Meggitt is Polk County’s largest manufacturer, having nearly 1,200 employees. The facility in Rockmart, a branch of Meggitt PLC’s worldwide company, produces aircraft fuel tanks.

The Rockmart Fire Department, along with EMS and law enforcement re-sponded to the scene this morning.

Meggitt is housed inside Rockmart’s old Goodyear building and was formerly known as Engineered Fabrics Corp.