19jkaa.r ((BITUMINOUS COAL)), $10 MINIMUM BID, GCI Pollyanna 8 Mine, Le Flore County, Oklahoma, 4 x 3 x 2.5 cm, 2 Miniatures | |
Anthracite coal is known as hard coal and Bituminous is known as soft coal. 2 samples of soft coal from Oklahoma collected in 1998. |