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Effectiveness of pillar softening as a roof-control method at the Revloc Mine, Ebensburg, Pennsylvania, The

Zink, Gerald
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Advisor
Wang, Fun-Den
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Date
Date Issued
1975
Date Submitted
Keywords
Mine roof control
 Coal mines and mining -- Safety measures
 Coal mines and mining -- Pennsylvania -- Cambria County
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1970-1979 - Mines Theses & Dissertations
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Zink_10781937.pdf
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https://hdl.handle.net/11124/175893
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