Removal of Overburden
Mines also use large electric loading shovels, hydraulic excavators and front-end loaders – combined with large haul trucks – to remove overburden and shallow layers of “interburden” between coal seams.
Removal of Overburden
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All lignite coal mines in North Dakota use electric powered draglines to
remove the ground between the subsoil and the coal seam – called the
overburden. One scoop with a large bucket has enough overburden to fill
50 pickups. Mines also use large electric loading shovels, hydraulic excavators and front-end loaders – combined with large haul trucks – to remove overburden and shallow layers of “interburden” between coal seams. |
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