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4 results returnedStatistical analysis of the progress in mechanical cleaning of bituminous coal from 1927 to 1934
An explanation of washability curves for the interpretation of float-and-sink data on coal
A washability study of the Black Creek Coal bed at Yolande No. 6, Rockcastle, Ala.
Classification and tabling of table middlings at the Colta Coal Washery, Flat Creek, Ala.
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