An explosion in a southwestern China plant involved in manufacturing iPads has killed three people, reports Reuters. Foxconn Technology, a Taiwanese company that is one of Apple's biggest suppliers, confirmed the deaths yesterday, and said that preliminary findings indicate that the blast, which happened Friday, was caused by combustible dust at a polishing workstation. Foxconn said that all work at that workshop has been stopped, as has similar work at other workshops. In addition to the deaths, 15 people were injured. (More Foxconn stories.)