Definitions for "Surface mining"
Keywords:  overburden, mine, placer, pit, strata
Mining from surface of materials without sub-surface tinseling.
Surface mining is used when coal is found close to the surface or on hillsides. It involves removing the topsoil and subsoil and setting them aside while the coal is removed.
Removal of soil, sub-soil, and other strata and then extracting a mineral deposit found fairly close to the earth's surface. See strip mining.