In January 2016  Precision Castparts Corp. became a sibsidiary of a multinational conglomerate holding company headquartered where?
Precision Castparts Corp.: Precision Castparts Corp. is an American industrial goods and metal fabrication company that manufactures investment castings, forged components, and airfoil castings for use in the aerospace, industrial gas turbine, and defense industries. Berkshire Hathaway: Berkshire Hathaway Inc. is an American multinational conglomerate holding company headquartered in Omaha, Nebraska, United States.
i don't know