FTB Mining Terms PDF

MINING TERMS 1. A system of bearing down coal by which compressed air, generated locally by a portable compressor at 10,000 psi, is used in releasing cylinder, which is placed in a hole drilled in the coal. a. Hydrox c. Cardox b. Clorox...

MINING TERMS 1. A system of bearing down coal by which compressed air, generated locally by a portable compressor at 10,000 psi, is used in releasing cylinder, which is placed in a hole drilled in the coal. a. Hydrox c. Cardox b. Clorox d. Airdox 2. In coal mine subsidence, this angle is assumed to bisect the angle of repose of material. a. Angle of repose c. Pit slope b. Angle of draw d. Bench slope 3. The maximum slope at which a heap of any loose material will stand without sliding or come to rest when poured on dumped in a pile or on a slope. a. Angle of draw c. Angle of repose b. Working slope d. Gradient slope 4. It is the portion or remainder of shot-hole found in a face often a blast has been fired. a. Bootleg c. Hang-fire b. Misfire d. Mine-fire 5. A small tunnel driven horizontally into the rock at right angles to the face. It has two or more cross-cuts driven from it parallel to the face. a. Cross-cut c. Coyote dog-hole b. Drift d. Slope 6. Sinking a number of boreholes each in different horizontal or vertical direction from a single drill set-up. a. Auger drilling c. Diamond drilling b. Fan drilling d. deep well drilling 7. The process of injecting grout into crevices of rock, usually through a borehole drilled into the rock. a. Spraying c. Guniting b. Grouting d. shotcreting 8. The rising of the floor of the mine caused by its being too soft to resist the weight on the pillar. a. Roof c. Heave b. Floor d. Crown 9. The line defining the area in which open pit operation may be conducted to obtain maximum amount of ore material and minimum amount of waste material. a. Optimum pit limit c. working slope b. Bench slope d. Gradient 10. The cubic feet or ore pre ton in deposit. a. Tonnage factor c. Mine head b. Swell factor d. Mill head 11. A smooth blasting method in which cracks for the final contour are created by blasting prior to the drilling of the rest of the holes for the blast patter.  a. Perimeter blasting c. Smooth blasting b. Pre-splitting d. secondary blasting 12. Failure of a charge to explode when expected. a. Bootleg c. Hang-fire b. Misfire d. Explosion 13. Lowering of strata, including the surface due to underground excavation. a. Rock failure c. sinking b. Subsidence d. Mud-rush 14. A horizontal opening driven across the course of a vein or in general across the direction of the main workings. a. Ramp c. Dog-hole b. Tunnel d. Crosscut 15. A distinct pause or pre-determined time between detonation or initiation impulses, to permit the firing of explosives charges separated. a. Delay blasting c. delay b. Delay detonator d. Delay element 16. An explosive material containing substantial amounts of oxidizers dissolved in waste, surrounded by an immiscible fuel. a. Glycerin c. Ammonia b. Fuel oil d. Emulsion 17. A designation given to a delay detonator to show its relative or absolute delay time in a given series. a. Delay interval c. Delay period b. Delay element d. Delay series 18. The wall or rock under a vein. a. Host rock c. Footwall b. Country rock d. hanging wall 19. Explosives that are permitted for fuse in gassy and dusty atmosphere. a. ANFO c. Permissible explosives b. Ammoniac dynamite d. Commercial explosives 20. The airborne suspension of solid particles from the products of detonation and deflagration. a. Dust c. Fumes b. Smoke d. Gases 21. Applied to the blasts by means of which the original rock ledge is broken into fragments. a. Primary blasting c. Mud-capping b. Black-holding d. Plaster shooting 22. A square set whose members are not framed at their intersections and the timbers used are smaller than those of the square set. a. Spilling c. Top lagging b. Bastard set d. bearing set 23. A fuse composed of an explosive core within a textile or plastic covering. It detonates every explosive that in direct contact with it.  a. Cordtex c. Ignitacord b. Primacord d. none of the above 24. The angle, measured in degrees of deviation from the horizontal at which the earthy or rack material will stand in an excavated terrace-like out in an open pit mine or quarry. a. Angle of draw c. Angle of repose b. Pit Slope d. Bench of slope 25. The explosive cartridge into which the detonator has been inserted. a. ANFO c. Gela tin dynamite b. Permissible Explosive d. Primer Cartridge 26. Type of cut in underground blasting in which the cut holes are drilled parallel to each other and straight into the face; one or more holes are being left unloaded for the others to break to. a. Under cut c. Burn cut B. Fan cut d. V – cut 27. The operation of drilling and blasting a detached boulder or masses of rock, the purpose of which is to reduce the mass to sizes suitable for handling. a. Mud-capping c. Master shooting b. Block holing d. Bootleg 28. A baked mixtures of soda and lime, used in the container or regeneration of self- contained mine rescue or oxygen breathing apparatus to absorb the exhaled CO2. a. Air ox c. Card oxide b. Car ox d. Clorox 29. Mine opening over haulage level through which ore from the slope above is drawn to the waiting trucks as planning is moved. a. Ramp c. Chinaman’s chute b. Ore pass d. Drift 30. A hollow cylinder attached to a specially designed it and which is used to contain and preserve a continuous section, or core of the rocks penetrated in drilling. a. Core barrel c. Core lifter b. Core-it-lap d. none of the above 31. Explosive decomposition that moves through the reactants at a speed greater than the speed of sound in the reactants to produce shock waves and significant over pressure regardless of confinement. a. Detonation c. electric blasting cap b. Delay d. Deflagration