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Remote-controlled continuous miners are used to work in a variety of difficult seams and conditions, and robotic versions controlled by computers are becoming increasingly common. Continuous mining is a misnomer, as room and pillar coal mining is very cyclical. In the US, one can generally cut up to around 20 feet (6 meters).
The Mine Safety and Health Administration (MSHA) (/ ˈ ɛ m ʃ ə /) is a large agency of the United States Department of Labor which administers the provisions of the Federal Mine Safety and Health Act of 1977 (Mine Act) to enforce compliance with mandatory safety and health standards as a means to eliminate fatal accidents, to reduce the frequency and severity of nonfatal accidents, to ...
Caterpillar Inc., also known as Cat, is an American construction, mining and other engineering equipment manufacturer. [6] The company is the world's largest manufacturer of construction equipment. [ 3 ] [ 7 ] [ 8 ] In 2018, Caterpillar was ranked number 73 on the Fortune 500 list [ 9 ] and number 265 on the Global Fortune 500 list. [ 10 ]
The Caterpillar 777 is a 100-ton haul truck, typically used in open pit mining, manufactured by Caterpillar Inc. [1] [2] The first model of Caterpillar 777 was introduced in 1974. [3] Its diesel engine is capable of putting out 870 horsepower (650 kW). The 777D, introduced in 1996, was powered by a 938-horsepower (699 kW) diesel.
Industrial Structure, Union Strategy and Strike Activity in Bituminous Coal Mining, 1881 - 1894 Social Science History 26 (2002): 1 - 32. Roy, Andrew. A history of the coal miners of the United States, from the development of the mines to the close of the anthracite strike of 1902, including a brief sketch of early British miners (1907) online
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Coal miner in Wheelwright, Kentucky, 1946. People have worked as coal miners for centuries, but they became increasingly important during the Industrial Revolution when coal was burnt on a large scale to fuel stationary and locomotive engines and heat buildings. Owing to coal's strategic role as a primary fuel, coal miners have figured strongly ...
The Bureau's archive of mining maps was transferred to the National Mine Map Repository (NMMR), a part of the Office of Surface Mining (OSM). Closure of the Bureau of Mines, and the accompanying transfers of functions and employee layoffs were essentially complete in March 1996.