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Carbonizing Properties: Chilton Coal from Lorado Number 5 Mine, Lorado, Logan County, West Virginia
Carbonizing properties of Armstrong County, Pa., coals
Carbonizing properties of Somerset County, Pa., coals
Carbonizing properties of Harlan County, Ky., coals
Carbonizing properties of Raleigh County, W. Va., coals
Carbonizing properties of Indiana County, Pa., coals
Carbonizing properties of Floyd County, Ky., coals
Carbonizing properties of McDowell County, W. Va., coals
Expanding properties of American coals tested in sole-heated oven