crop coal

crop coal

[′kräp ‚kōl]
(mining engineering)
Coal of inferior quality found near the surface.
References in periodicals archive ?
ACV Power also will install erosion and sedimentation controls, as well as remove the waste coal refuse pile and building remains at the site; remove and fill in the cave holes associated with deep-mine subsidence over portions of the Lower Freeport deep mine; and remove remaining crop coal and pillars of coal that contribute to the acid mine drainage.