After World Struggle II, infrastructure development took off in america, and dams had been one of many key drivers. Large jobs, they required massive machines to get the job executed. The Garrison Dam in North Dakota, the fifth-largest earthen dam on the earth, was constructed throughout the Missouri River, beginning in 1947 and producing energy by 1953. 

This movie from Allis-Chalmers reveals the dimensions of the work – and the equipment – that went into constructing this huge undertaking. Plus, it digs in to point out the hassle that went into upkeep and maintaining that work shifting.