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1950
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1953
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1960
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1963
1964
School Or College
College of Mines & Earth Sciences
2
Department
Mining Engineering
2
Publication Type
thesis
2
Subject
Coal mines and mining
2
Time study
1
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"ir_etd"
Subject:
"Coal mines and mining"
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Title
Setname
Type
1
Time studies in underground coal mining
ir_etd
Text
2
Study of various coal mines in Utah, Colorado, and Wyoming
ir_etd
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