914 resultados para Coal mines and mining.


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Item 429-T-11

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1 folded map in pocket.

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"Report of the United States Bureau of Mines to the Pennsylvania State Anthracite Mine Cave Commission and review of the compressive strength of anthracite, bituminous coals and mine supports."

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Includes bibliographical references.

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First edition, September 1916. cf. verso of t.-p.

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Also verso t.p.: 1894.

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