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Joan Copjec, Twenty Shovelsful of Dirt (1 5) 2m49s (cropped).jpg Licensing This video, screenshot or audio excerpt was originally uploaded on YouTube under a CC license.
The disk harrow is used first to slice up the large clods left by the mould-board plough, followed by the spring-tooth harrow. To save time and fuel they may be pulled by one tractor; the disk hitched to the tractor, and the spring-tooth hitched to, and directly behind, the disk. The result is a smooth field with powdery dirt at the surface.
Big Brutus, while not the largest electric shovel ever built, is the largest electric shovel still in existence. The Captain, at 28 million pounds (13 kt) – triple that of Big Brutus – was the largest shovel and one of the largest land-based mobile machines ever built, only exceeded by some dragline and bucket-wheel excavators. It was ...
A typical shovel. A shovel is a tool used for digging, lifting, and moving bulk materials, such as soil, coal, gravel, snow, sand, or ore. [1] Most shovels are hand tools consisting of a broad blade fixed to a medium-length handle. Shovel blades are usually made of sheet steel or hard plastics and are very strong.
Another principle change was the direction of the digging action, with modern excavators pulling their buckets toward them like a dragline rather than pushing them away to fill them the way the first powered shovels did.
Marion Power Shovel Company was an American firm that designed, manufactured and sold steam shovels, power shovels, blast hole drills, excavators, and dragline excavators for use in the construction and mining industries. The company was a major supplier of steam shovels for the construction of the Panama Canal.
Big Muskie was the world's largest ever dragline. Built by Bucyrus-Erie in 1969, it was 487 ft (148 m) in length, weighed some 13,500 short tons (12,247 t), and hoisted a 220 cu yd (168.2 m 3) bucket that could move 325 short tons (295 t) of material at a pass.
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