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Carbonizing properties and constitution of Black creek bed coal from Empire mine, Walker county, Ala.
Comparison of small and large scale experimental carbonizing apparatus :Tests of Pittsburgh Bed coal from Allison mine, Fayette county, Pa., and of a coal from the Michel Mine, British Columbia
Carbonizing properties and constitution of Alma bed coal from Spruce River no. 4 mine, Boone County, W. Va.