📝 Auger Mining 📝 All other mining techniques in which coal is extracted from beneath the overburden by mechanical devices situated at the face of the cliff or highwall and extending laterally into the coal seam, such as extended depth, secondary recovery systems, are included in the definition of auger mining, which is the process of mining coal at a cliff or highwall by drilling holes into an exposed coal seam from the highwall and transporting the coal along an auger bit to the surface. 📝 C