thomas. Dozer. June 01st , 2018.
Widespread acceptance of the bull-grader does not seem to appear before the mid-1930s. The addition of power down-force provided by hydraulic cylinders instead of just the weight of the blade made them the preferred excavation machine for large and small contractors alike by the 1940s by which time the term "bulldozer" referred to the entire machine and not just the attachment.
Over the years bulldozers got bigger and more powerful in response to the demand for equipment suited for ever larger earthworks. Firms like Caterpillar Komatsu Case Euclid5 Allis Chalmers Liebherr LiuGong Terex Fiat-Allis John Deere BEML XGMA and International Harvester manufactured large tracked-type earthmoving machines. R.G. LeTourneau and Caterpillar manufactured large rubber tired bulldozers.
Three IDF Caterpillar D9 armored bulldozers. The IDF uses the D9 for combat engineering and counter-terrorism operations.
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