Two workers have been killed by 800-pound (360-kilogram) slabs of countertop material that fell on them while being unloaded from a trailer in New York.

The Niagara County sheriff’s office in New York says it appears 11 slabs of Corian-brand material collapsed on the workers about 1:30 a.m. Monday at the XPO Logistics facility in Lockport, near Buffalo.

Pronounced dead at the scene were 38-year-old Christopher Klosin, of Barker, and 62-year-old Roger Mangine, of Newfane.

A statement from XPO Logistics, headquartered in Greenwich, Connecticut, expressed sympathy to the victims’ families and co-workers. The company says it’s working with its safety team and local law enforcement to understand the circumstances surrounding the accident.

Corian is a man-made solid material produced by DuPont.

(AP)