PHNOM PENH, Cambodia -- The ceiling of a Cambodian factory that makes Asics sneakers collapsed on workers early Thursday, killing two people and injuring seven, in the latest accident spotlighting the often lethal safety conditions faced by those toiling in the global garment industry.About 50 workers were inside a workroom of the factory south of Phnom Penh when the ceiling caved in, said police officer Khem Pannara. He said heavy iron equipment stored on a mezzanine above them appeared to have caused the collapse.