Keith Haddock , P.Eng., is one of the worldrsquo;s leading experts on earthmoving and surface mining equipment. His articles appear regularly in industrial and equipment magazines in Canada , the United States , and the United Kingdom . He often appears as a commentator on the History, Discovery, and Learning Channels. Of his six books published by MBI Publishing Company, Keith considers The Earthmover Encyclopedia his greatest writing achievement and the most comprehensive ever written on earthmoving equipment. He currently lives in Edmonton , Alberta , Canada .