"It has been customary in speaking of anthracite and bituminous mining methods to consider them as separate and unrelated. It should be recognized that for any given case the proper method depends on the physical characteristics of the coal seam, roof, and floor, rather than on the rank of the coal. It is true that a large portion of the anthracite seams being worked lie in synclines with steeply pitching sides but the methods of mining employed are governed by these steep pitches, rather than by the fact that the coal is anthracite. Certain flat anthracite seams are worked in a manner similar to those of the bituminous fields, while steeply pitching bituminous beds in Colorado are mined by methods similar to those of the pitching anthracite beds."
-DC Jones, Coal Mining 1941
_________________ -Thou shalt not little vein-
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