SURFACE MINING Reviewer PDF

TERMS: Ore - mineral deposit that Burden - distance b/w the Muckpile - accumulation can be worked at a profit explosive charge and the of broken rock as a result under existing economic free face of blasting conditions. Drop cut (box cut...

TERMS: Ore - mineral deposit that Burden - distance b/w the Muckpile - accumulation can be worked at a profit explosive charge and the of broken rock as a result under existing economic free face of blasting conditions. Drop cut (box cut) - initial Power shovel - the Outcrop - considered as cut or wedged-shaped workhouse the of the the surface exposure of a prism made in the floor of surface mining industry mineral deposit an open pit mine for Cut-off grade - the Mine - an excavation developing a bench at a minimum economic made on the earth to level below the floor tenor of an ore extract minerals Monitor - device used for Stipping ratio - ratio of an Truck Performance - this directing high-pressure overburden to ore at the is where road grades base jet of water in ultimate boundary of the their criterion. hydraulicking pit where the margin at 8-12 % - is the best range Pit-limit - the vertical and profit approaches zero for truck road gradient lateral extent to which the Overall stripping ratio - Base failure - a failure mining of a mineral volume of overburden to that occurs below the toe deposit by open pit may the weight of ore in an of the bank be economically carried entire mineable ore body Planimeter - determines Placer deposits - the area of a cross-section unconsolidated deposits of an ore body of detrital material Dredging - classified as containing valuable continuous mining minerals Slope failure - a failure Quarry - an open pit or the occurs b/w the crest surface mining usually and toe used to extract slate, Angle of Repose - limestone, etc. maximum slope at which Sluicing - the separation any loose materials will of mineral in flowing stand without sliding stream of water Berms - used to contain Switchback - a road or retard falling boulders arrangement to surmount in open pit mining the grade of a steep climb Bench - the horizontal in an open pit mine rock shelf in an open pit Grade - amount of vertical mining rise or fall in 100 units of Scale - a graduated horizontal distance measure used to plot express in percent distance on a map Crest - the top edge of a Bench height - the bench in an open pit vertical distance b/w the mine crest and toe Specific gravity - the ratio of mass to the mass of an equal volume of water at a specific temperature. Rock fragmentation - operation above which Less than the time freeing or detaching or minerals and waste required to spot and large masses of rock form materials are excavated load the entire truck its parent deposits Long-range mining plan fleet - used for proper Maximum allowable - initial step in open pit cycle balance in hauling, stripping ratio - the ratio mining design is the the cycle time for trucks of overburden to ore at compilation of LRMP or must be less the ultimate boundary of referred to as final pit High grade ore - ore that the pit where the profit design. yields a large margin of margin is zero 4000-5000 ft. - 1 ft of ore profit per ton Open pit mining (open face must be exposed for Mine waste - means soil cut mining) - mining each 4 to 5 tons of or rock materials from method that requires required daily production, surface or underground many benches and the daily production is mining operations with resembles a circular 20,000 tons, then advance no present economic pyramid, inverted in the stripping of the bench value earth face 63-72 degrees - Stripping - removal of Multiple-bench - type of recommended pit slope overburden external to open pit mining that for the solid country rock the mineral deposit and normally can be 37 degrees - removing waste within employed in any massive, recommended pit slope the confines of the open thick bedded, wide vein for gravel pit tabular deposits Hydraulicking and Mining - process of Short-range mining blasting - classified as obtaining useful minerals plans - defines the both excavating and rock from the earth's crust and intermediate steps fragmentation includes both required to reach the final Crude pit design - underground and surface pit limits produce a whittle 3D Prospecting - means Strip mining - mainly computer software searching for an ore applied to the mining of Mine application Development - the work near-surface seams of software - of driving openings to and coal, most stripping is computer-aided mine in a proved ore body to effected in bedded design prepare it for mining and sedimentary formations 1.5 meters - the vertical transporting the ore Vein - mineralized zone height of working Prospect - mineral having a more or less benches shall be kept at a property, the value of regular development in maximum height which has not been length, width and depth Jet - classified as both proved by exploration to give it a tabular form rock fragmentation and Exploration - work commonly inclined rock penetration involved in gaining Long-range production Rotary-drag bit drilling - knowledge of the size, planning - supplements of the shelf-technology, shape, position, and value the pit design and reserve the lowest cost of of an ore body estimation work that is penetration in soft rock is Single-bench - a bench usually done for feasibility obtained forms a single level of and budget studies Materials handling - all unit operations involved in excavating or moving bulk materials during mining operations Optimum pit limit - line defining the area in which open pit operation may be conducted to obtain maximum amount of ore material Tonnage factor - cubic feet or ore per ton in deposit Bench slope - the angle, measure in degrees of deviation from the horizontal at which the earthy or rock material will stand in excavated terrace like out in an open pit mine Liscad - surveying software