411 resultados para Coal mines and mining -- Safety measures


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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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Part V of the report of the Department of Internal Affairs

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National Highway Safety Bureau, Washington, D.C.

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Includes bibliographical references (p. 456-482) and index.

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Includes indexes.

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Description based on: 1952.

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Name changed on May 11, 1920 from Canadian Mining Institute.

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"Special publication."

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Issues for 1920-1948 called also v. [1]-29.