Robert Gilmour LeTourneau, the inventor of earthmoving machines, secured
nearly 300 patents over the course of his life. During World War II,
about 70 percent of the earthmovers and engineering vehicles were his
machines that were invaluable to the Allied war effort. With outstanding
photography, this overview of 90-years-plus of manufacturing features
the company's earliest earthmoving equipment introductions in 1921, all
the way up to today's ultra-large mining equipment introductions. This
companion book to the three previous publications - R.G. LeTourneau
Heavy Equipment: The Mechanical Drive Era 1921-1953, R.G. LeTourneau
Heavy Equipment Photo Gallery: The Electric-Drive Era (1953-1970), and
Modern LeTourneau Earthmoving Equipment since 1968 - includes updated
information and all new images of the LeTourneau enterprise.
