109 resultados para Coal mining
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"U.S. Bureau of Mines contracts J0166054 and J0166055."
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This report is the fourth in a series to assess the availability of coal resources for future mining in Illinois.
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Includes bibliographical references (p. 50-52)
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Includes bibliographical references (p. 41-43).
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Shipping list no.: 2002-0451-M.
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"Appointed to inquire into the causes of the present dearness and scarcity of coal."
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Duke of Argyll, chairman.
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Item 429-T-11
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Mode of access: Internet.
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Mode of access: Internet.
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"Specially compiled and prepared for the convenient use of mine officials, mining engineers, and students preparing themselves for certificates of competency as mine inspectors or mine foremen."
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1 folded map in pocket.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.