Coal 2 The Term Mine example essay topic

... 1) The contamination of ore with barren wall rock in's toping is called dilution 2) The mixture of ore other substances in which grade is lowered is termed as dilution Discipline: 1) An engineer must be well disciplined 2) The mining engineering is the most disciplined profession after the military 3) Discipline is needed in order to protect the orders given in working chain Dragline: 1) A crane boom used with a drag bucket is dragline boom 2) An excavation system involving a dragline & other dragline equipments is called dragline dredge 3) Operator of a scraper loading machine, known as a dragline is called drag loader Drilling: 1) Wet drilling is one of the methods used in dust remedy 2) The diamond, rotary, percussion drillings are use in mining operations 3) The drill holes are source of information which give lithology, water conditions, samples Dump: 1) Dump is the point where a face conveyor discharges its coal into mine cars 2) Trucks in surface mining and shuttle cars in underground mining is a type of dump equipment 3) A chain grab hook having a lever attachment for releasing it is used as a dumb equipment Dust: 1) Dust level in a must be kept under 0.2 microns 2) To avoid from dust diseases workers must use masks 3) Spraying and suction machines can be helpful in order to protect workers from dust Dynamite: 1) Compositions that contain significant amounts of nitroglycerin but aren't and considered to be dynamite 2) The basic ingredient of dynamite is nitroglycerin 3) Dynamite is the most known & used explosive -E- Efficiency: 1) The ratio of work output to work input is calculated by efficiency engineers 2) The weight of material correctly placed above or below the reference size, expressed as a percentage of the weight of corresponding material in the feed is the efficiency of sizing 3) The efficient of airway is which the combined capital and operating cost is minimal Environment: 1) An evaluation of environment and conditions at a particular facility or site is called environmental audit 2) An analysis of environment which may involve baseline environmental analyses and data gathered with regard to zoological, botanical, geologic, and economic factors 3) In mining sector environment & conditions play an important role Excavation: 1) Excavation includes digging, blasting, breaking, loading, and hauling, either at the surface or underground 2) The grab, skimmer, trencher, rotary digger, bucket wheel, and grader are variants of excavation machines 3) Cableway fitted with a bucket suitably designed for excavation Explore: 1) Exploration is the first and main step of mining operations 2) Persons who works in exploring business is called prospectors 3) Exploration and evaluation process are related with each other -F-Fault: 1) In coal mining, a sudden thinning or disappearance of a coal seam is called fault 2) A fracture or a fracture zone in crustal rocks along which there has been displacement of the two sides relative to one another parallel to the fracture is named fault 3) Various descriptive names have been given to different kinds of faults Fault line: 1) An escarpment that is the result of differential erosion along a fault line is scarp 2) Usually a straight valley follows the fault line 3) East face of the Sierra Nevada in California is na example of fault line scarp Feldspar: 1) The general formula of feldspar is XY 4 O 8 where X can be Ba, Ca, K, Na, NH 4 and Y can be Al, B, Si 2) Constituting 60% of the Earth's crust, feldspar occurs in all rock types 3) There is a wash box to clean small coal, in which the pulsating water is made to pass through a layer of graded material such as feldspar Filtration: 1) Filter loss and cake thickness constitute the determining factors of filtration qualities 2) The process of filtration is activated by suction or pressure, and commonly includes filter aids 3) The products of filtration are clear liquid and a filter cake Firedamp: 1) A stone, brick, or concrete airtight stopping to isolate an underground fire is called firedamp 2) Firedamp play an important role in underground fire 3) Firedamp prevent the inflow of fresh air and the outflow of foul air Flint: 1) Lots of devices, formerly used to provide light for miners at work using flint 2) A smooth, flint like refractory clay rock is named flint-clay 3) Dark gray or black variety of chert is known as flint Flocculation: 1) Adding an electrolyte to suspension is the main step of flocculation 2) Agents of flocculation usually consist of long chain polymers, both natural and synthetic 3) The joining of soil colloids into a small group of soil particles, or the deposition or settling out of suspension of clay particles in salt water are examples of flocculation-G-Gallery: 1) Galleries are horizontal or nearly horizontal underground passages 2) A subsidiary passage in a cave at a higher level than the main passage can be called gallery Gateway: 1) A road or way underground for air, water, or general passage is called gateway 2) Gateway is also called gate road, main brow, trail road Grinding: 1) There are two types of grinding; wet, dry grinding 2) An additive (aid) to the charge in a ball mill or rod mill to accelerate the grinding process 3) There are three main types of grinding mills; ball, rod, and tube mills-H-Hand picking: 1) In hand picking method up to 30% of waste rock is removed 2) In hand picking method removal of wastes take lots of time 3) In some mines hand picking method is used to collect coal Haulage: 1) In haulage cars are for surface or mine shaft operations and used to carry ore and equipment to and from the digging site 2) In the early days chains were used in haulage in and around mines 3) A worker fully employed on the haulage system in a mine is called haulage hand Headframe: 1) Headframe is also called gallows frame, hoist frame, head stocks 2) Headframe includes all the raised structure around the shaft that is used for loading and unloading cages 3) Headframe is found at the top part of the shaft Helmet: 1) There are lamps connected to helmets 2) Helmets are the main safety devices in mines Hoisting: 1) The section of a mine shaft used for hoisting the mineral to the surface is called hoist ling compartment 2) Winding in a mine is a kind of hoisting 3) The capacity of the hoisting mechanism on a drill machine in terms of kilograms, tons is named hoisting powder Humidity: 1) The water-vapor content of the atmosphere is called humidity 2) Humidity can be expressed as the mass of water per unit and percentage, ratio 3) There are two types of humidity; absolute, relative humidity Hydraulic Transport: 1) Hydraulic transport includes hydraulic hoisting 2) Long distance pipeline used for hydraulic transport of coal, , copper concentrates and similar materials 3) Hydraulic transport is a continuous transport system which is especially used in large coal mines -I- Inclination: 1) Inclinatory is the instrument to determine the inclination of the magnetic field 2) As the maximum angle is approached in inclination, the rate of handling of bulk material is usually decreased 3) Declination and inclination are similar to each other Incline: 1) An incline shaft sunk at an inclination from the vertical, usually following the dip of a lode 2) Plane, whether above or beneath the surface is incline (slope) Isomorphism: 1) Carbonate minerals of the aragonite group are good example of isomorphous minerals 2) Having similar crystalline form is called isomorphism -J- Jigs: 1) Self-acting inclined track used to lower filled coal tubs and raise empty is called jig brow 2) In jigs the difference in specific gravity, in a pulsating water medium are used 3) A pin is used in jigs to prevent the turning of the turn beams Junctions: 1) In ventilation surveys, where three or more airways meet is called junction 2) The union of two lodes is a junction 3) Junction is the point where two or more passageways intersect horizontally or vertically-L- Level: 1) Levels are commonly spaced at regular depth intervals and are either numbered from the surface or designated by their elevation below the top of the shaft 2) In pitch mining, there may be a number of levels driven from the same shaft, each being known by its depth from the surface or by the name of the bed or seam in which it is driven 3) In speleology, a series of related passageways in a cave, occurring at the same relative, vertical position is called level Locomotive: 1) The locomotive may be powered by battery, diesel, compressed air 2) Locomotive are used to move empty and loaded mine cars in and out of the mine-M- Magnetic separator: 1) The crushed material is conveyed on a belt past a magnet and separated by magnetic separator 2) In magnetic separator the difference of magnetism of substances are used for separation 3) Magnetic separator is very important in the process of of iron ore Malleable: 1) Copper and gold are mall able minerals 2) Minerals are malleable when slices cut from them may be flattened out under a hammer 3) Mineral which can be plastically deformed under compressive stress is mallableMetal: 1) Metals are good conductors of heat and electricity 2) Metals are malleable and ductile, possesses high melting and boiling points, and tends to form positive ions in chemical compounds Mine: 1) There are several kinds of mines such as ore, metal, or coal 2) The term mine is applied to underground workings having a roof of undisturbed rock 3) The terms mine and coal mine are intended to signify any and all parts of the property of a mining plant, either on the surface or underground Mine car: 1) There are six types of mine cars; The solid or box type, roller dump type, gable bottom car, the Grandy car, bottom dump car and end dump car 2) Mine cars are loaded at production points and hauled to the pit bottom or surface in a train by locomotives or other power Mineral: 1) Any natural resource extracted from the earth for human use is called mineral 2) Ores, salts, coal, or petroleum are some examples of minerals 3) In flotation, valuable mineral constituents of ore as opposed to gangue minerals-O- Ore: 1) The term ores is sometimes applied collectively to opaque accessory minerals 2) Zone of rock rich in ore is called ore bandOre body: 1) Values of ore body is found by evaluation process 2) Exploration is don to locate orebodyOutburst: 1) The occurrence of outburst is violent and may overwhelm the workings and fill the entire district with gaseous mixtures 2) Floor burst is a type of outburst generally occurring in long wall faces and preceded by heavy weighting due to floor lift Overflow: 1) A system fitted to a drag suction hopper dredge which disperses entrained gases from the overflow in a settling tank and discharges the degassed overflow below the surface is called overflow system-P-Panning: 1) Panning is a technique of prospecting for heavy metals 2) In panning the lighter fractions are washed away, leaving the heavy metals behind 3) Panning process is for heavy metals such as gold, etc. Parachute: 1) Parachute is a safety device used in shafts 2) In the case of rope breakage parachute reduces the velocity of fall 3) Parachutes can be installed to shaftsPelleziting: 1) Pelletizing is a step in agglomeration process Pillar: 1) Pillars are normally left permanently to support the surface or to keep old workings water tight 2) The area of the shaft pillar is considerably greater than the surface area requiring protection 3) Any large pillar entirely or relatively unbroken by roadways or airways that is left around a property to protect it against water is called barrier pillar Polymorphism: 1) Polymorphism limited to two or three crystal classes is dimorphism or trimorphism 2) To crystallize in more than one crystal class is called polymorphism 3) Graphite, diamond, , and are examples of polymorphous elements Power plants: 1) Power plants produce energy for mine & other facilities 2) Any device or machine which converts energy into some form of useful power, such as mechanical or electric power is called power plant Profit: 1) The ratio of profit is important in order to operate the mine 2) Simply profit is the money gained from a business Pulp density: 1) Pulp density is used in mineral processing 2) Pulp density has a marked effect on the recovery and grade of concentrate 3) if 5 cm 3 of pulp weighs 15 g, then the pulp density is 3 g / cm 3 -R-Railroad: 1) Usually railroads are used for transportation in mines 2) Mine cars are carried by railroad 3) Railroad is made of rails which form a track Raise: 1) Raise climber is an equipment used in an opening 2) Excavating a shaft or steep tunnel upward is the process of raise 3) The connection of two level may be a winze or a raise Ramp: 1) An incline connecting two levels in an open pit or underground mine is called ramp 2) Ramp is a portion of a thrust fault that cuts across formational contacts in a short distance Recovery: 1) A plant designed for separating diamond particles from concentrate by various processes is a recovery plant 2) Recovery is a measure of mining or extraction efficiency. 3) Recovery is the percentage of valuable constituent derived from an ore Refrigeration: 1) A surface plant to form the protective barrier of frozen ground in the freezing method of shaft sinking is called refrigeration plant 2) Refrigeration is in special application to mining, cooling of air before release in lowest levels of deep, hot mine 3) The process of absorption of heat from one location and its transfer to and rejection at another place is called refrigeration Regulator: 1) Regulator is a ventilating device 2) Regulators are usually set in doors as adjustable, sliding partitions that can be varied to the desired opening 3) Where possible, regulators are located on the exhaust side of a split to minimize interference with traffic Roadway: 1) Roadway is an underground d rivage 2) Roadway is not steeply inclined 3) Roadway may form part of long wall or bord-and-pillar workings Rock: 1) An aggregate of one or more minerals is called rock 2) Granite, shale, marble are examples of rock 3) In geology, the material that forms the essential part of the Earth's solid crust is names as rock Roof bolts: 1) Roof bolting consists of steel rods 2) A long steel bolt inserted into walls or roof of underground is called roof bolt 3) A steel plate, sometimes in combination with wooden headers or steel straps are used in roof bolts Rope: 1) The rope should be inspected daily, weekly 2) The life of rope is maximum two years 3) In a rope there are six or more strands-S-Seam: 1) Seam is generally applied to large deposits of coal 2) A thin layer or stratum of rock separating two distinctive layers of different composition or greater magnitude is also called seam 3) A seam in a coal bed is at which the different layers of coal are easily separated Selective mining: 1) The object of selective mining is to obtain a relatively high- grade mine product 2) In general, selective mining methods are applicable where the valuable sections of the deposit are rather large, comparatively few in number, and separated by relatively large volumes of waste 3) In coal mining, selective methods may be dictated by market demands and prices Shaft: 1) A shaft is provided with a hoisting engine at the top for handling workers, rock, and supplies 2) Shaft may be used only in connection with pumping or ventilating operations 3) A specially armored cable of great mechanical strength is used in the shaft Shaking table: 1) In shaking table lateral shaking motion is given by means of a small crank or an eccentric 2) Shaking table is shaken rapidly in a compounded to-and-fro motion by a vibrator 3) In ore dressing, flattish tables oscillated horizontally during separation of minerals fed onto shaking tables Shovel: 1) Shovel is any bucket equipped machine used for digging and loading earthy or fragmented rock materials 2) There are two types of shovels, the square-point and the round-point 3) Shovels are available with either long or short handles Skip: 1) The skip is mounted within a carrying framework 2) There is a bucket used for containing the material conveyed by a skip 3) Skip can also be adapted for personal riding Slime table: 1) Slime table is used for the treatment of slime 2) Slime table is an equipment used in slimingSpraying: 1) Spraying is a kind of remedy against dust 2) The spraying machine is mounted on wheels and operated by compressed air 3) Spraying may be used for lime washing Stope: 1) A stope is the very antithesis of a shaft, tunnel, drift, winze, or other similar excavation in a mine 2) Stope, a room which is a wide working place in a flat mine Stowing: 1) Stowing is a method of mining in which all the material of the vein is removed 2) In stowing the waste is packed into the space left by the working Strontium: 1) Strontium is found as celestite (Sr SO 4) and strontianite (Src 3) 2) Strontium is majorly is used for color television picture 3) Strontium is a silvery white, alkaline earth metal-T-Tailings: 1) Tailings are used in washing, concentration, treatment of ground ore 2) Tailings machine is for sifting the tailings Tenor: 1) Tenor (grade) is a coal classification based on degree of purity 2) The relative quantity or the percentage of ore-mineral or metal content in an ore body is termes as tenor 3) Tenor is the classification of an ore according to the desired or worthless material in it or according to value Tie: 1) Ties are one of the transverse supports to which railroad rails are fastened to keep them to line, gauge, and grade 2) Ties are made of either steel or wood Track: 1) Track cable is a steel wire rope, usually a locked-coil rope that supports the wheels of mine cars 2) All railroad system and equipments in a mine is called track -V-Vein: 1) A mineral deposit, usually steeply inclined can be called vein 2) Also a narrow water way or a stream of water flowing in such a channel is a vein Ventilator: 1) Ventilators are a mechanical apparatus for producing a current of air underground 2) Blowing or exhaust fan are some examples of ventilators 3) A small fan installed underground for ventilating coal faces or hard rock headings are called ventilation fans (ventilators) Ventubes: 1) Ventubes are made of steel, fiberglass, or coated fabric with thin walls that can be easily connected 2) Ventubes are used in mine ventilation to lead air wherever it is needed -W-Wet cutting: 1) Wet cutting is a method of dust prevention 2) Wet cutting method is successful in seams up to 1.22 m thick 3) In wet cutting water is delivered onto a moving cutter chain, through water pipes, and is carried into the cut where it is intimately mixed with the cuttings Wet drilling: 1) Wet drilling is needed to allay dust and danger of pneumoconiosis 2) In rock drilling for blasting purposes, injection of water through a hollow drill is used and termes as wet drilling Winder: 1) Winder brake is an appliance or piece of equipment capable of retarding or stopping cages in a shaft in an emergency 2) An electrically driven winding engine for hoisting a cage or cages up a vertical mine shaft is called winder Winding: 1) The operation of hoisting coal, ore, miners, or materials in a shaft is called winding 2) The machinery and equipment used to lower and raise loads through a shaft are winding apparatus Winze: 1) When one is standing at the top of a completed connection the opening is referred to as a winze 2) A vertical opening driven downward connecting two levels in a mine is called winze 3) Winze is a connection between two levels.