Almost five kilometers of mine workings were passed for the new longwall. All the development and transfer efforts were made exactly in time, so first metric tons of coal have already been mined ...
Longwall shearers cut away the face of a coal seam in longwall mining operations by mounting over an armored face conveyor (AFC). They are equipped with cutting drums positioned against the coal seam ...
MARSHALL COUNTY, W.Va. — The longwall mining by American Consolidated Natural Resource, which is affecting the structure of homes and buildings in Cameron, could also cause flooding. Marshall ...