165 resultados para Abandoned coal mines


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Includes a Tentative annual report for 1949 in addition to the regular report.

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Includes bibliographical references.

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Directors: 1873-1880, Nathaniel Southgate Shaler.--1880-1891, John Robert Procter.

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Includes bibliographical references (p. 39-40).

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Prepared by the Research Division of the Dept. of Business and Economic Development under contract with the Illinois Institute of Natural Resources.

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"Project no. 80.057."

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Bibliography: p. 17-23.

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"Illinois Mine Subsidence Research Program"

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"Project 86/7005."