Topic - Precision Castparts

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. In 2009 it ranked 362nd on the Fortune 500 list, and 11th in the aerospace and defense industry. In 2015 it ranked 322nd overall and 9th in the aerospace and defense industry. In January 2016, the company became a subsidiary of Berkshire Hathaway. Before that event, it used to be one of the three Fortune 500 companies headquartered in Oregon. - Source: Wikipedia