al mining terms pdf
2020-07-12T14:07:50+00:00
Glossary of Coal Mining Terms DOL
Butt entry a coal mining term that has different meanings in different locations It can be synonymous with panel entry, submain entry, or in its older sense it refers to an entry that is "butt" on to the coal cleavage (that is, at right angles to the face) Cage in a mine shaft, the device, similar to an elevator car, that is used for Butt entry A coal mining term that has different meanings in different locations It can be synonymous with panel entry, submain entry, or in its older sense it refers to an entry that is "butt" onto the coal cleavage (that is, at right angles to the face) C Cage In a mine shaft, the device, similar to an elevator car, that is used forGlossary of Mining TermsMining Glossary of Terms Abutment In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, that is, the settled packs behind the faceMiningGlossaryofTerms(1)pdf Mining Glossary Abutment In coal mining, (1) the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway; and (2) the weight of the rocks over a longwall face is transferred to the front abutment, that is,Appendix Y Glossary of Mining Terms as used in this Coal is mainly mined using two methods surface or opencast and underground mining The geological condition determines the method of mining Coal mining is (PDF) Impact of Coal Mining on Environment
Glossary of Mining Terms SEC
Anthracite A hard, black coal containing a high percentage of fixed carbon and a low percentage of volatile matter Anticline An arch or fold in layers of rock shaped like the crest of a wave Apex The top or terminal edge of a vein on surface or its nearest point to the surface Ash The inorganic residue remaining after ignition of coalCoal Mining Terms Beginning with O Obliterated Corner; Obstruction To Vision; Offer; Official Agency Record (OAR) Official Returns; Official Survey; Offset; Omitted Lands; One ThirtySecond (1/32) Corner; OneEighth (1/8) Corner; Options; Organized Mining District; Ownership Descent; Coal Mining Terms Beginning with P Parallel Offset Method; Parcel (PRCL) Partial AssignmentCoal Mining Terms Dictionary The Coal Fields™