Modern Earthmoving Machines: Bulldozers, wheel loaders, bucket wheels, scrapers, graders, excavators, off-road haulers, and walking draglines (at Work)
Keith Haddock, a professional engineer, has enjoyed a lifelong involvement with earthmoving and heavy equipment. Just over 20 years ago Haddock co-founded the Historical Construction Equipment Association (HCEA) that now boasts over 5,000 members. He has written several books on heavy equipment and has been featured in numerous TV documentaries including Modern Marvels, Monster Machines and Mega Excavators. He currently specializes in providing information, research, and freelance writing for earthmoving and surface mining publications.