Underground mining (hard rock) Wikipedia

Aug 28, 2002Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds or rubies. Soft rock mining refers to excavation of

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Mine access Development mining vs. production mining Ventilation Ground support

Stoping Wikipedia

Stoping is the process of extracting the desired ore or other mineral from an underground mine, leaving behind an open space known as a stope. Stoping is used when the country rock is sufficiently strong not to collapse into the stope, although in most cases artificial support is also provided.. The earliest forms of stoping were conducted with hand tools or by fire-setting; later

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Transverse longhole stoping QueensMineDesignWiki

Transverse longhole stoping is a bulk mining method in which the long axis of the stope and access drifts are perpendicular to the strike of the orebody. Typically drawpoints are located in under-cut access drifts which extend from the footwall, and the free face is mined in a horizontal retreat from the hanging wall to the footwall.

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Mining Blasthole stoping Britannica

Mining Mining Blasthole stoping: When the dip of a deposit is steep (greater than about 55°), ore and waste strong, ore boundaries regular, and the deposit relatively thick, a system called blasthole stoping is used. A drift is driven along the bottom of the ore body, and this is eventually enlarged into the shape of a trough. At the end of the trough, a raise is driven to the drilling

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Major MinesProjects Mining Intelligence and News

Dec 04, 2019Concept of the drift and fill mining method which should be used in a few locations in the mine when the geometry of the orebody does not permit the longhole or uppers method. The mine will be operated by contractors as a 24/7 two-shift operation. This should be maintained during the life of mine.

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Longhole

Longhole This method consists in a variety of chambers where the mine blocks are generally cut by sub-levels from which long holes are drilled in plans that are generally parallel. These boreholes allow to blast the block by successive vertical break.

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(PDF) Underground mining Methods ResearchGate

Longwall mining is a highly mechaniz ed underground mining sys tem for mining coal. It set of longwall mining equipment consists of a coal shear er mounted on convey or operating

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Mine tours: going where every MQ editor has gone before

Sep 04, 2020Another underground mining method utilized by Nevada Gold Mines is known as longhole stope mining, which is when a drift is developed, along with a second drift between 45-60 feet below the first one.

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Major MinesProjects Mining Intelligence and News

Concept of the drift and fill mining method which should be used in a few locations in the mine when the geometry of the orebody does not permit the longhole or uppers method. The mine will be operated by contractors as a 24/7 two-shift operation.

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Mining Blasthole stoping Britannica

Mining Mining Blasthole stoping: When the dip of a deposit is steep (greater than about 55°), ore and waste strong, ore boundaries regular, and the deposit relatively thick, a system called blasthole stoping is used. A drift is driven along the bottom of the ore body, and this is eventually enlarged into the shape of a trough. At the end of the trough, a raise is driven to the drilling

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Longhole

Longhole This method consists in a variety of chambers where the mine blocks are generally cut by sub-levels from which long holes are drilled in plans that are generally parallel. These boreholes allow to blast the block by successive vertical break.

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Tranter Rock Drills Mining Technology Mining News and

S140 rear drive drifter powerful 140mm-diameter bore drifter rock drill for shaft-sinking operations duty paving breaker capable of cutting tarmac and reinforced concrete on construction sites and breaking up boulders in mining and quarrying applications; Longhole drilling accessories and airlegs. Tranter provide longhole drilling

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Longitudinal longhole retreat QueensMineDesignWiki

Longitudinal longhole mining may be used when there is a steeply dipping orebody with the inclination of the footwall greater than that of the angle of repose of the blasted muck. Also, the hanging wall and footwall, must be fairly good or better but group support in the form of cable bolts must be installed, and the mineralized zone must have

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DL421 Longhole drill rig — Mining and Rock Technology

DL421 is an electro-hydraulic, longhole drill rig engineered for large-scale production drilling in underground mines. This versatile rig has been designed for vertical and inclined plane rings and fans, as well as parallel long production holes and long single holes with a diameter of 64 to 115 millimeters (2 ½ to 4 inches), and a depth of up to 54 meters (177 feet).

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Narrow vein minimum dilution case study AMC Consultants

AMC examined the existing fleet of stope equipment (jumbos, LHDs, longhole drills, and bolters) at the mine and established optimal D&B designs for the selected vein widths, dips, drift profiles (square and shanty), drift size (height and width), and mining methods, which could immediately be implemented to reduce dilution, without additional

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Top hammer longhole drill rigs Mining and Rock

top hammer longhole drills are capable of drilling ø64-127 mm holes up to 54 m in length in mechanized and automated underground mining operations, where the target is to maximize ore recovery and minimize dilution with drilling of production or service support holes accurately and according to the plan.

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S36 drifter style rock drill designed for deep hole

S36 Rock Drill. The S36 rock drill is a market leading drifter style rock drill with a powerful 144 mm diameter bore and independent rotation. It is designed for deep hole drilling in both surface and underground applications when mounted on suitable feed systems.

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Major MinesProjects Nevada Gold Mines Mine

Conventional open pit and underground mining consisting of the Betze-Post open pit and the Meikle and Rodeo underground mines. Meikle is a high-grade ore body which is mined by transverse longhole stoping, underhand drift and fill mining methods. Rodeo is a trackless operation, using two different underground mining methods: long-hole open

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Production Long-Hole Jumbos Underground Mining Machines

The Muki LH is a production long-hole rig for sections from 2.5 x 2.5 m, and is a 4WD heavy duty diesel carrier with a width of 1.05 m. Manufactured and tested in Peru, this production long-hole drilling machine is equipped with Montabert drifter HC 50 (13 kW) and Drilling Feed available for 0.9 or 1.2 m drill rods.

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Choice of Method Welcome to the Narrow-Vein Mining Project

The mining method mostly used is a transverse primary and secondary longhole method. Usually, the development is done two years in advance of the production schedule. Therefore, when narrower areas are encountered in these sectors, the mining method generally used to recover these stopes is the longhole retreat method.

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Rock drill application Roxar rock drillsdrifters

The main equipments for Roxar rock drill application are jumbo drill, crawler drill, bolter drills, longhole drill, shaft jumbo drill, surface drill, wagon drill, tunneling drill, drilling attachment. Roxar drifter are optimized for Underground Mining, Bolting, Tunnelling as well as Surface Drilling, anchoring or Special Applications.

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Mining Blasthole stoping Britannica

Mining Mining Blasthole stoping: When the dip of a deposit is steep (greater than about 55°), ore and waste strong, ore boundaries regular, and the deposit relatively thick, a system called blasthole stoping is used. A drift is driven along the bottom of the ore body, and this is eventually enlarged into the shape of a trough. At the end of the trough, a raise is driven to the drilling

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Longhole

Longhole This method consists in a variety of chambers where the mine blocks are generally cut by sub-levels from which long holes are drilled in plans that are generally parallel. These boreholes allow to blast the block by successive vertical break.

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Major MinesProjects Nevada Gold Mines Mine

Conventional open pit and underground mining consisting of the Betze-Post open pit and the Meikle and Rodeo underground mines. Meikle is a high-grade ore body which is mined by transverse longhole stoping, underhand drift and fill mining methods. Rodeo is a trackless operation, using two different underground mining methods: long-hole open

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Choice of Method Welcome to the Narrow-Vein Mining Project

The mining method mostly used is a transverse primary and secondary longhole method. Usually, the development is done two years in advance of the production schedule. Therefore, when narrower areas are encountered in these sectors, the mining method generally used to recover these stopes is the longhole retreat method.

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Types of Mining Methods Sell Side Handbook

Mar 09, 2018Open pit mining method works best when the deposit is close to the surface as it is way more economical to use this method instead of underground mining. Open pit mining operations are the largest operations world-wide. Since this method allows for the use of large equipment, it results in huge economies of scale, enabling immense cost savings.

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In-The-Hole longhole drill rigs MASPRO Engineering

MASPRO® Parts engineered to perform. No compromise. Whether you’re a contractor servicing one of the largest metalliferous underground mines in Australia, you’re working boxcut and portal establishments or decline, incline and level developments or you’re an owner-operator with project targets to meet with cable bolting, production drilling, boxhole boring, long hole

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Rock drill application Roxar rock drillsdrifters

The main equipments for Roxar rock drill application are jumbo drill, crawler drill, bolter drills, longhole drill, shaft jumbo drill, surface drill, wagon drill, tunneling drill, drilling attachment. Roxar drifter are optimized for Underground Mining, Bolting, Tunnelling as well as Surface Drilling, anchoring or Special Applications.

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DRILL PANGOLIN DTHTop Hammer Crawler Drilling Rig

Jul 27, 2020UNDERGROUND MINING Drill jumbo Production long hole drilling rig Rock bolting rig Scaling rig Jack legs DRILLING ACCESSORIES Top hammer bits Shank adapter Coupler (Sleeve) DTH Hammer DTH bits Drill rod Oil seal (Hydraulic Breaker) Air hose DRIFTER PARTS PD200 drifter (for Furukawa PCR200) VL140 drifter (for IR E350) Parts of Atlas Copco

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Sublevel Stoping Mining Method YouTube

Black Diamond Drilling Services Australia Database

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Design Spans Underhand Cut and Fill Mining

shown in Figure 2a or by single lifts as placed by conventional drift and fill and/or underhand cut and fill as shown in Figure 2b. The major difference is that in Figure 2a one is largely operating remotely from the immediate filled back, whereas in Figure 2b one is mining

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A long hole stoping system for mining narrow platinum reefs

A long hole stoping system for mining narrow platinum reefs The Journal of The South African Institute of Mining and Metallurgy APRIL 2002 153 Figure 4—Project Site Production Plan Actual Face advance 2 m per blast 1.5 m per blast Metres per shift 125 m 105 m Square metres per shift 60 m 240 m Hole deflection 75 mm/15 m 45 mm/15 m

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Drifter conversion programs Services Komatsu Mining Corp.

Our drifter conversions and rebuilds always carry a new, three-month warranty on the drifter unit. In addition, we always use our genuine Montabert parts during conversions and repairs. Montabert drifters can be installed on any of the following: Jumbo drills; Bolter drills; Longhole drills; Shaft jumbo drills; Tunnelling drills

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Types of Underground Mining Method Comparison

Table of ContentsFactors Affecting Choice of MethodReview of Stoping MethodsUnderhand Stoping Mining MethodOverhand Stoping MethodLongitudinal Back, Flat-Back Mining MethodLong-Wall StopingmMining MethodRill-Cut Stoping MiningSaw-Tooth Back StopingShrinkage StopingMining by Combination StopingSide StopingBreast StopingSublevel

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Effect of delayed backfill on open stope mining methods

Longhole mining methods such as Avoca or longhole retreat as practiced at the Musselwhite mine of Placer Dome employs 100% extraction with the use of fill walls to provide support to the adjacent stope. Transverse open stoping also practiced at Musselwhite employs cemented rock fill adjacent to a mined stope.

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