A - E






A

Acid Mine »
Mine water that contains free sulfuric acid mainly due to the weathering of iron pyrites.
Adit »
A near Horizontal passage from the surface by which a mine is entered and deatred. A blind horizontal opening into a mountain, with only one entrance.
Active Workings »
Any place in a mine where miners are normally required to work or travel and which are ventilated and inspected regularly.
Advance »
Mining in the same direction,or order of sequence, first mining as distinguished from retreat.
Air split »
The division of a current of air into two or more parts.
Air way »
Any passage through which air is carried. also known as an air course.
Anemometer »
Instrument for messuring air velocity.
Angle of dip »
The angle at which strata or mineral deposits are inclined to the horizontal plane.
Angle of repose »
The maximam angle of horizontal at which a given matarial will rest on a given surface wethout sliding or rolling.
Anticline »
An upward fold or arch of rock strata.
Aquifer »
A water bearing bed of porous rock, often sandstone.
Arching »
Fracture processes around a mine openin,leading to stabilization by an arching effect.
Area (an airway) »
Average width multiplied by average height of air airway, expressed in square feet.
Auger »
A rotary drill that uses a scrw device to penetrate,break,and then transport the drilled matarial (coal).
Auxiliary opration »
All activities supportive of but not contributing directly to mining.
Auxiliary ventilation »
Portion of main ventilating current directed to face of dead end entry by means of an auxiliary fan and tubing.
Azimuth »
A surveying turm that references the angle messured clockwise from any meridian(The established line of reference). the bearing is used to designate direction. the bearing of a line is the acute horizontal angle b/w the meridian and the line.


B

Belt conveyor »
A looped belt on which the coal or other matarial can be carried and which is generally constructed of flame resistant matarial or of reinforced rubber or rubber like substance.
Bed »
A stratum of coal or other sedimentary deposite.
Bench »
One of to or more division of a coal seam seprates by state or formed by the process of cutting the coal.
Beneficiation »
The treatment of mined matarial, making it more concentrated or richer.
Berm »
A pile or mound of matarial capable restraining a vehicle.
Binder »
A streak of impurity ina coal seam.
Bituminous coal »
A middle rank coal formed by additional pressure and heat on lignite.
Blasting agent »
Any matarial consisting of a mixture of a fuel and an oxidizer.
Blasting cap »
A detonator containing a charge of detonating compound,which is ignited b electric current or the spark of a fuse. used for detonating explosives.
Blasting circuit »
Electric circuit used to fire electric detonators or to ignite an ignite an igniter cord by means of an electric starter.
Borhole »
Any deep or long drill-hole,usually associated with a diamond drill.
Bottom »
Floor or underlying surface of an underground excavation.
Boss »
Any member of the managerial rank who is directly in charge of miners.
Breakethrough »
A passage for ventilation that is cut through he pillars between rooms.
Brow »
A low place in the roof of a mine, giving insufficient headroom.


C

Cage »
In a mine shaft, the device similar to an elevator car, that is used for hoisting personnel and materials.
Calorific Value »
The quantity of heat that can be liberated from one pound of coal or oil measured in BTU's.
Canopy »
A protective covering of a cab on a mining machine.
Cap »
A miner's safety helmet. Also, a highly sensitve, encapsulated explosive that is used to detonate large but less sensitive explosives.
Cap Block »
A flat piece of wood inserted between the top of the prop and the roof to provide bearing support.
Car »
A railway wagon, especially any of the wagons adapted to carrying coal, ore, and waste underground.
Car-Dump »
The mechanism for unloading a loaded car.
Caste »
A directed throw, in strip-mining, the overburden is cast from the coal to the previously mined area.
Certified »
Describes a person who has passed an examination to do a required job.
Chain Conveyor »
A conveyor on which the material is moved along solid pans by the action of scraper crossbars attached to powered chains.
Cleat »
The vertical cleavage of coal seams. The main set of joints along which coal breaks when mined.
Coal Dust »
Particles of coal that can pass a No. 20 sieve.
Coal Reserves »
Measured tonnages of coal that have been calculated to occur in a coal seam within a particular property.
Coal Gasification »
The Conversion of coal into gaseous fuel.
Coke »
A hard, dry carbon substance produced by heating coal to very high temperature in the absence of air.
Collar »
The term applied to the timbering or conrete around the mouth or top of a shaft. The beginning point of a shaft or drill hole at the surface.
Colliery »
British name for coal mine.
Comminution »
The breaking, crushing, or grinding of coal, ore, or rock.
Contour »
An imaginary line that connects all pointson a surface having the same elevation.


D

Deposit »
Mineral deposit or ore deposit is used to designate a natural occurrence of useful mineral, in sufficient extent.
Depth »
Denotes vertical depth below the surface.
Detectors »
Specialized chemical or electronic instruments used to detect mine gases.
Detonator »
A device containing a small detonating charge that is used for detonating an explosive.
Development »
Work undertaken to open up coal reserves as distinguished from the work of actual coal extraction.
Diffusion »
Blending of a gas and air,resulting in a homogeneous mixture.
Diffuser Fan »
A fan mounted on a continuous miner to assist and direct air delivery from the machine to the face.
Dilute »
To lower the concentration of a mixture.
Dilution »
The contamination of ore with barren wall rock in stoping.
Dip »
The inclination of a geological structure from the horizontal.It is always measured downwards at right angle to the strike.
Dome »
A rock structure containing the oldest strata at the inner portion and youngest at the outer portion.
Dragline »
A large excavation machine used in surface mining to remove overburden covering the coal seam.
Drainage »
The process of removing surplus ground or surface water either by artificial means or by gravity flow.
Drift »
A horizontal passage underground.A drift follows the veins,as distinguished from a crosscut that intersects it.
Drift Mine »
An u/g coal mine in which the entry or access is above water leveland generally on the slope of a hill,driven horizontally into a coal seam.
Drill »
A machine utilizing rotation,percussion, or a combination of both to make holes.
Drilling »
The use of such a machine to createholes for exploration or for loading with explosives.
Dummy »
A bag filled with sand,clay etc., used for stemming a charged hole.
Dump »
To unload;specially, a load of coal or waste.

E

Electrical Grounding »
To connect with the ground to make the earth part of the circuit.
Entry »
An u/g horizontal or near-horizontal passage used for haulage,ventilatio, or as a mainway; a coal heading; a working place where the coal is extracted from the seam in the initial mining.
Evaluation »
The work involved in gaining a knowledge of the size,shape,position and value of coal.
Exploration »
The search for mineral deposits and the work doe to prove or establish the extent of a mineral deposit.
Explosive »
Any rapidly combustive or expanding substance.The energy released during this rapid combustion or expansion can be used to break rock.
Extraction »
The process of mining and removal of coal or ore from a mine.

3 comments:

  1. Thanks For sharing this Superb article.I use this Article to show my assignment in college.it is useful For me Great Work.
    omnidex mining

    ReplyDelete
  2. This article gives the light in which we can observe the reality. This is very nice one and gives indepth information. Thanks for this nice article. best free instagram likes and followers app

    ReplyDelete