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  2. A lesson in digging using some heavy lifters - mini ... - AOL

    www.aol.com/lesson-digging-using-heavy-lifters...

    Students rotated between two mini excavators and a track loader to practice their skills at digging and moving dirt.

  3. Starting blocks - Wikipedia

    en.wikipedia.org/wiki/Starting_blocks

    For most levels of competition, including the whole of high-level international competition, starting blocks are mandatory equipment for the start of sprint races. [1] Their invention is credited to Australian Charlie Booth and his father in 1929. [2] Prior to this, runners would dig holes in the dirt track. Trowels were provided at the start ...

  4. Wheel tractor-scraper - Wikipedia

    en.wikipedia.org/wiki/Wheel_tractor-scraper

    He was an earth moving contractor dealer in bulldozer accessories and envisaged a pulled trailer that could excavate and pick up earth as it moved. He approached bulldozer manufacturer Caterpillar in the mid-1930s with his idea, but it was turned down, so he founded his own company. The first Tournapull, called the Model A, was rolled out of ...

  5. Loader (equipment) - Wikipedia

    en.wikipedia.org/wiki/Loader_(equipment)

    John Deere Front end loaders CAD model tracing of a tractor mounted loader mechanism CAD model tracing of a skid loader mechanism. A loader is a heavy equipment machine used in construction to move or load materials such as soil, rock, sand, demolition debris, etc. into or onto another type of machinery (such as a dump truck, conveyor belt, feed-hopper, or railroad car).

  6. Bagger 288 - Wikipedia

    en.wikipedia.org/wiki/Bagger_288

    The chassis of the main section is 46 m (151 ft) wide and sits on three rows of four caterpillar track assemblies, each 3.8 m (12 ft) wide. The large surface area of the tracks means the ground pressure of the Bagger 288 is very small (1.71 bar or 24.8 psi); this allows the excavator to travel over gravel, earth and even grass without leaving a ...

  7. Earthworks (engineering) - Wikipedia

    en.wikipedia.org/wiki/Earthworks_(engineering)

    Heavy construction equipment is usually used due to the amounts of material to be moved — up to millions of cubic metres. Earthwork construction was revolutionized by the development of the scraper and other earth-moving machines such as the loader, the dump truck, the grader, the bulldozer, the backhoe, and the dragline excavator.

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