Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Day 1 : M Metho
Mining Methods
| Question | Answer |
|---|---|
| Mining method that is exclusively by retreating method with the cut-off grade serving only to define the fringes of major ore zones. | Open pit |
| A method in which any overburden is stripped and transported to a disposal area to uncover the mineral deposit. | Open cast |
| Slope of the final pit limit that defines geographically the boundaries of the open pit reserves. | Final Pit Slope |
| A controlling factor in determining the choice of mining method between open pit operation and underground method. | Stripping Ration |
| If mineral deposits that are otherwise prime candidates for recovery by open pit mining occur at uneconomic depth, and underground method must be considered, then what is your logical choice? | Room and Pillar |
| The angle measured in degrees of deviation from the horizontal, at which the earthy rock material will stand in an excavated terrace like out in an open pit or quarry. | Bench slope |
| Mining method where caving and subsidence occur with substantial pillar extraction. | Room and Pillar |
| A method which is intended for the recovery of heavy minerals from mainly alluvial or placer deposits using water to excavate, transport and/or concentrate the mineral. | Placer Mining |
| Includes those methods which are reliant on water or liquid solvent to recover minerals from the earth, either by hydraulic action or solution attack. | Aqueous extraction |
| A method in which a high pressure stream of water is directed against a placer bank to undercut and cave it. | Hydraulicking |
| A method in which the extraction carried out on a mineral in place. | In situ leaching |
| Mining method which has a wide range of applications. This is because of its selectivity, good recovery, and applicability under an unpredictable rock conditions. | Cut and Fill |
| Fiducial interval is used in ore reserves estimation when the valuation technique being used is _______________. | Statistical Method |
| This mining method is generally employed in steeply dipping bedded deposits with fairly uniform grade where the stope are mined from sublevels. | Sublevel stoping |
| A geophysical exploration technique most applicable to porphyry copper deposits. | Spontaneous Polarization Technique |
| The most reliable method of determining the gold content of an ore. | Atomic Absorption Spectrophotometry |
| Small blocks of ore are systematically extracted and replaced by a prismatic skeleton of timber sets, framed into an integrated support structure and backfilled floor by floor. It can be operated overhand, underhand, or breast and any shape of orebody. | Square Set Stoping |
| An exploitation method used in fairly flat-lying, thin, tabular deposits in which a long face is established across a panel between sets of entries and retreated or advanced by narrow cuts, aided by the complete caving of the roof and hanging wall. | Longwall |
| A supported mining method were ore strength is moderate to strong, rock strength weak to fairly weak, deposit size tabular to irregular, deposit dip moderate to fairly steep, deposit size thin to moderate, ore grade fairly high. | Cut and Fill |
| Mine opening over haulage level through which one from the stope above is drawn to the waiting trucks as planking is removed. | Chinaman's chute |
| The process of ejecting grout (mixture of cement and sand) into crevices of rock usually through a borehole drilled into the rock to be grouted. | Grouting |
| The spraying of mine roadways with concrete to give a measure of support presents a smooth surface to the air current and prevent weathering. | Guniting |
| The ore tonnage estimated largely on the board knowledge of the geologic character of the deposits and for which there are few, if any, samples or measurements. | Geologic Reserve |
| One in which the ore above the point of entry to the stope is attacked, so that severed ore tends to gravitate towards discharge chutes and is self-draining. | Overhand Stope |
| A method of mining using a system of haulageways beneath the block of the ore which has its top surface exposed by the removal of the overburden. Over the haulageways are chutes that extend up to the surface. | Glory hole system |
| A process for mining sulfur in which superheated water is forced into the sulfur deposits for the purpose of melting the sulfur. | Fransch Sulfur |
| A local term for vein. | Nava |
| Geostatistical method of determining the average grade of an orebody from drillhole sample assays. It can also provide directional grade trends. | Kriging Method |
| It uses chemical reagent. | Flotation |
| Slusher system of block caving is a method that is: | Semi-mechanized, high labor intensive |
| LHD of block caving is a method that is: | Highly mechanized, low labor intensive |
| The most commonly used mining methods in narrow veins are normally: | Low mechanized, leading to low productivity |
| Cut-and-fill with ramp in the stope is a variation of cut-and-fill which offers: | Mechanized alternative of cut-and-fill method |
| The ramp method of cut-and-fill is best suited for: | Long ore veins or continuous beds |
| Sublevel retreat with backfill is found in the structure as: | Cut and fill in slices |
| The analysis of the method in side veins suggest that it is the safest method of mining known today | Vertical Crater Retreat |
| A factor in selecting mining methods that rely on mine recovery, dilution and flexibility of methods | Technological factors |
| This factors are probably the most important determinant because they largely decide the choice of the method. | Spatial Characteristics |
| Detailed surface investigation of target area in prospecting. | Phase III |
| It is an independent mine organization where the department head has direct consultation with the manager. | Safety Department |
| The cheapest and low recovery of leach mining. | In situ leaching |
| Detailed reconnaissance in prospecting which include ore dressing test | Phase II |
Created by:
rabadabadab