Walking the talkOperational excellence is a cornerstone for the way Chevron Mining does business, president and CEO Mark Smith explains to Gary Toushek. Chevron Mining Inc., headquartered in Englewood, Colorado, was created in 2007 as a subsidiary when parent company Chevron Corporation merged its mining operationsÔÇöthe former Pittsburg & Midway Coal Mining Co., which has been a subsidiary of Chevron for many years, and Molycorp Inc.ÔÇöinto one unit.