China has detained four people after a horrific accident in which more than 25 metric tons of molten steel engulfed a room where workers were changing shift, killing at least 32...at a plant belonging to the Qinghe Special Steel Co. Ltd...Police...detained the company's manager, a workshop supervisor, an operator and a technician...Like many state-owned enterprises in the northeastern industrial rust belt, Qinghe has been restructured into a private company...