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Flint mining is the process of extracting flint from underground. Flint mines can be as simple as a pit on the surface or an area of quarrying, or it may refer to a series of shafts and tunnels used to extract flint. Flint has been mined since the Palaeolithic, but was most common during the Neolithic.
Durant-Dort Factory One. General Motors traces its roots to the Durant-Dort Carriage Company of Flint named after William C. Durant and Josiah Dallas Dort, and purchased the original Durant-Dort factory (built in 1880 as a woolen mill) on Water Street in May 2013 (and the Durant-Dort office, a National Historic Landmark across the street, as well). [2]
Flint Engine Operations (previously, Flint Engine South) is a General Motors automobile engine factory in Flint, Michigan. The plant opened in 2002 and is named to replace the Flint North engine plant. The plant currently produces the small four-cylinder SGE and Duramax I6 engines.
A drum hoist (steel wire rope visible) and motor. In underground mining a hoist or winder [1] is used to raise and lower conveyances within the mine shaft.Modern hoists are normally powered using electric motors, historically with direct current drives utilizing Ward Leonard control machines and later solid-state converters (), although modern large hoists use alternating current drives that ...
Principle of rope-shovel operation [1]. A power shovel, also known as a motor shovel, stripping shovel, front shovel, mining shovel or rope shovel, [2] is a bucket-equipped machine usually powered by steam, diesel fuel, gasoline or electricity and used for digging and loading earth or fragmented rock and for mineral extraction. [3]
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