Glossary of Mining Terms
Back — The roof or upper part in any underground mining cavity. Backfill — Mine waste or rock used to support the roof after coal removal. Barren — Said of rock ...
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Back — The roof or upper part in any underground mining cavity. Backfill — Mine waste or rock used to support the roof after coal removal. Barren — Said of rock ...
SURFACE COAL MINING MANAGEMENT. Paul Westcott. The geological characteristics of surface coal mining which distinguish it from other surface mining are the nature of ...
A. 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 ...
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