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Introduction To Longwall Mining

longwall mining center for coalfield justice,longwall mining is a deep mining technique capable of fully extracting huge panels of coal, frequently up to 1,500 feet wide and two miles long. coal shearing machines known as continuous miners, remove a long wall of coal in a single slice as hydraulic jacks hold up the roof above and in front of the machine..fact sheet subsidence from longwall coal mining,introduction to longwall mining and subsidence. unpublished report, mine subsidence engineering consultants. nsw department of planning 2008 impacts of underground coal mining on natural features in the southern coalfield strategic review, nsw department of planning, isbn.

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