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    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 the face and the back abutment, …

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    For gallery mine devolopment in cross sections from 12 up to 18 m 2 in mining projects, HAZEMAG & EPR GmbH offers the crawler mounted boring loader HBL which is able to realize load works and drilling works for blasting also with a single machine.

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    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 the face and the back abutment, …

  • HAZEMAG -Products

    For gallery mine devolopment in cross sections from 12 up to 18 m 2 in mining projects, HAZEMAG & EPR GmbH offers the crawler mounted boring loader HBL which is able to realize load works and drilling works for blasting also with a single machine.

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    The 4B Milli-Speed™ has a 4 – 20 mA linear output signal and is designed to detect belt slip, belt underspeed, stop motion, low speed or zero speed on bucket elevators, conveyors, airlocks, mixers, fans and many other rotating machines.