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1975•Min. Congr. J.; (United States)Requires access

1970--1974: a period of adverse changes in productivity and costs at underground bituminous coal mines

J.W. Straton

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Key concepts: Productivity, Bituminous coal, Period (music), Coal mining, Coal, Natural resource economics, Environmental science, Economics

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1970--1974: a period of adverse changes in productivity and costs at underground bituminous coal mines — Research Paper | ScholarLens