What Are The Vechiles Are Used In Coal Mines

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    a tramroad about two miles in length is used to convey the coal in the mine cars to the head of the plane, by means of a locomotive. thence the cars are lowered down the plane, about half a mile to the dump, which is across the state line in pennsylvania,

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    coal mining in the 1920's enough that a motor may be used for hauling the coal. in a shaft mine the men as well as mining car will hold about four

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    abcs of coal loaders. a truck dump is used when a mine is located some distance away from the sized coal was very common, and single car loadings were the

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    bhp accused of rolling over on vehicle safety. "we've had 29 rollovers since january last year on mines in queensland — 17 on coal mines and with the

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