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WhatsApp: +86 18203695377WEBApr 26, 2018 · In West ia it's been said that coal mining is more than a job—it's a religion. And if the coalfields are church, then the pepperoni roll—a soft roll filled with sticks or slices of pepperoni—is the Holy Bible. This iconic food' s roots in West ia run as deep as its bituminous coal mines, perhaps because the two developed ...
WhatsApp: +86 18203695377WEBGlossary of Mining Terms. Abutment In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of ...
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