On this day in history, July 7, 1930, construction of the Hoover Dam began. Over the course of the next five years, more than 21,000 men would work tirelessly to produce what would become the largest ...
Marion Steam Shovel introduced the 4160 4-yard mine and quarry loading shovel in 1927. It was the first crawler mounted, fully revolving shovel designed specifically for this type of work; until this ...
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