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This saves time and the additional cost of purchasing machinery and fuel. Working with the 4200 SM in the Australian mine resulted in a 79% reduction in fuel consumption per cubic meter of mined material. Labor costs were reduced by 60% and mining unit costs per ton were reduced by 60% compared to the conventional mining method.

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Surface miners drive up savings in coal mining. In addition to mining, these machines can Labor costs were reduced by 60% and mining unit costs per

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The greater the power of the machine, the greater the depth of coal seam into which it is able to bore down, producing a higher rate of coal. Augers drills used in auger mining can range from 60 to 200 feet (18 to 61 m) in length to two to seven feet (0.6 to 2.1 m) in diameter.

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These trends underscore the need for the United States to invest in low-cost alternatives to coal and increase their availability internationally. Coal and pollution controls. A portion of existing plants and all new ones offer some pollution control technologies to reduce their emissions, especially sulfur dioxide and particulates.

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