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Salvage of coal from mine refuse in the Pittsburgh district
Sulfur in low-gravity fractions of some bituminous coals
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Published Year
1940-1949 (2)
Subject
Bituminous coal--Sulfur content (1)
Coal--Pennsylvania--Pittsburgh (1)
Coal--Sulfur content (1)
Author
Fraser, Thomas. (2) *
Crentz, W. L. (1)
Graham, H. G. (1)
Kelley, J. A. (1)
