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longitudinal retreat mining method

longitudinal retreat mining method

Longitudinal Retreat Mining Method Reefkeeping

2021-3-25  Longitudinal Retreat Mining Method. Longitudinal retreat mining method eagle mine215 кб this method provides the cost advantages of bulk mining while maintaining a degree of selectivity and operational flexibility the majority of the stopes will be mined as transverse bench and fill stopes with some thinner thickness zones of the orebody mined as longitudinal retreat

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The Obuasi Mine Longitudinal Retreat Mining

The Obuasi Mine Longitudinal Retreat Mining Method Application and Challenges. The Obuasi Mine has been in operation for the past 100 years. Within this period a host of mining methods have been employed during its various changing phases. The causes for the changes are multiple, ranging from orebody capability, dynamics, technology, safety,

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longitudinal retreat mining method

Sublevel open stoping, by longitudinal retreat, is the most commonly used stoping method.Longitudinal retreat mining of deep, narrow vein lenses under sand fill at the Golden Giant mine resulted in shear failure parallel to the ore HW contact [Figure 8b12].

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longitudinal retreat mining method

The mining methods are longitudinal retreat with paste backfill, and transverse open stoping with paste or unconsolidated backfill. All of the ore is trucked to the surface

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Lapa Mining Method 26m Longitudinal Retreat AGNICO

2016-12-12  Lapa Mining Method 26m Longitudinal Retreat AGNICO EAGLE 4.2m . Title: PowerPoint Presentation Author: George Dikho Created Date: 3/1/2013 10:26:46 AM

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longitudinal retreat mining method moj-ursus.pl

longitudinal retreat mining method Dictionary 's List of Every Word of the Year Our Word of the Year choice serves as a symbol of each year's most meaningful events and lookup trends.

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Retreat Mining, Room and pillar mining, Underground

2021-5-7  Retreat Mining. Retreat mining is the last phase of a general kind of coal mining technique referred to as room and pillar mining. In room and pillar mining a mining machine called as "continuous miner" bores a network of chambers or "rooms" into a coal seam, leaving at the back an unexcavated pillar of coal in every room to support the roof of the mine.

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Types of Mining Methods Sell Side Handbook

2018-3-11  A highly productive underground mining method, longwall mining is used in a large horizontal spread of thin-bedded deposits of uniform thickness usually ranging from 0.6m to 1m. Used a lot by South African gold mining companies, this method can be used in both soft and hard rocks as the working area along the mining

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longitudinal retreat mining method

4 MINING 4.1 Mining Method The mining method employed at CBI has been de­ signed for extraction with complete pillar re­ covery, while allowing no perceptible surface subsi­ dence. The mining method is retreat transverse and/or longitudinal long hole stoping with post backfill. The ore body is accessed from a ramp system lo­ Get Price

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Longhole Welcome to the Narrow-Vein Mining Project

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. The broken ore is mucked out by drawpoints or by longitudinal retreat.

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Retreat Mining, Room and pillar mining, Underground

2021-5-7  Retreat Mining. Retreat mining is the last phase of a general kind of coal mining technique referred to as room and pillar mining. In room and pillar mining a mining machine called as "continuous miner" bores a network of chambers or "rooms" into a coal seam, leaving at the back an unexcavated pillar of coal in every room to support the roof of the mine.

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Vertical Crater Retreat Mining Method Mode Design

Longitudinal retreat mining method samatourfr vertical crater retreat mining method vertical crater retreat stoping as applied at the homestake 28 jul 2012 therefore the feasibility of applying the vcr stoping method at the homestake mine was explored vertical crater retreat stoping is a recent innovation in largescale underground mining .

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Major Mines & Projects Patterson Lake South Project

The mining method for the underground will be longhole retreat mining in both transverse and longitudinal methods, and some localized drift and fill mining based on current block model information. The mining will progress from the bottom levels to the top, and from the southwest to northeast. Mining is planned at nominally 1,000 tpd ore.

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A Back Analysis of Dilution and Recovery in Longitudinal

2020-8-25  recovery in longitudinal sublevel caving, mainly as the knowledge base for this particular mining method is limited when compared to other bulk mining methods. The analyses involved 3,358,301 fired tonnes and 3,520,322 drawn tonnes spread over 106 "stopes" and 5 years of mine operation. A study by Perera (2005)

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Lamaque Gold Mine, Val-d’Or, Quebec Mining

2020-6-12  Based on the Triangle deposit’s orebody characteristics, a longitudinal retreat long-hole mining method was selected. Sill pillars are placed temporarily to facilitate the simultaneous operation of a greater number of production areas. The pillars are removed as the mining

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Choice of Method Welcome to the Narrow-Vein

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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Vertical Crater Retreat

Mining retreats horizontally as successive vertical slices are blasted. Vertical block mining is the term most often used for this method. In VBM the workplace is divided into a series of vertical blocks and the blocks may be nined on a retreat basis working from the ends of the workplace.

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Types of Underground Mining Method Comparison

2017-3-16  Longitudinal Back, Flat-Back Mining Method Long-Wall StopingmMining Method. After starting an overhand stope the shape in which the back is carried is often of prime importance. In A, Fig. 2, is illustrated the method of carrying a flat or longitudinal

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longitudinal retreat mining method 51 aupv.ch

2019-3-28  longitudinal retreat mining method 51. DESIGN AND ANALYSIS OF TRACER TESTS TO DETERMINE . design and analysis of tracer tests to determine effective porosity and dispersivity in fractured sedimentary rocks newark basin new jersey by glen b.

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Longitudinal Retreat Mining Method pierette.nl

Major Mines Projects Premier. Mining methods described herein will be applied at both PGP and RMP. In the case of RMP, the orebody is continuous and sufficiently wide to use a transverse longhole stoping method whereas at PGP, the ore is along more discrete lenses and tend be narrow, requiring a narrow longitudinal retreat approach to longhole mining

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longitudinal retreat mining ppppketrzyn.pl

2021-1-3  longitudinal retreat mining method longitudinal retreat mining method. Narrow vein and low profile mining1.41 Мб. Mining methods applied have also ranged from timber square setts, conventional cut-and-fill (CAF), shrinkage stoping, sublevel caving, mechanised CAF, longitudinal and transverse open stoping, and lately the longitudinal retreat mining method (LRMM).

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Longitudinal Retreat Mining Method

Longitudinal longhole retreat QueensMineDesignWiki. From Queens University Mine Design Wiki Longitudinal longhole retreat is a branch of the generic mining method known as sublevel stoping For longitudinal retreat the long axis of the stope is along or parallel

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longitudinal retreat mining method

4 MINING 4.1 Mining Method The mining method employed at CBI has been de­ signed for extraction with complete pillar re­ covery, while allowing no perceptible surface subsi­ dence. The mining method is retreat transverse and/or longitudinal long hole stoping with post backfill. The ore body is accessed from a ramp system lo­ Get Price

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longitudinal retreat mining method moj-ursus.pl

longitudinal retreat mining method. Dictionary 's List of Every Word of the Year . Our Word of the Year choice serves as a symbol of each year's most meaningful events and lookup trends. It is an opportunity for us to reflect on the language and . Inquiry Online. Planetary Base Atomic Rockets.

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Lapa Mining Method 26m Longitudinal Retreat AGNICO

2016-12-12  Lapa Mining Method 26m Longitudinal Retreat AGNICO EAGLE 4.2m . Title: PowerPoint Presentation Author: George Dikho Created Date: 3/1/2013 10:26:46 AM

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Longhole Welcome to the Narrow-Vein Mining Project

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. The broken ore is mucked out by drawpoints or by longitudinal retreat.

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Major Mines & Projects Los Ricos South Project

Longitudinal retreat mining progresses from the bottom of a mining area to the top, working on top of PF. For transverse access, an access drift is driven in waste rock parallel to the strike of the vein, offset 10 m from the vein, and transverse cross-cuts are driven from the access through waste rock and into the mineralized material on 15 m

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Choice of Method Welcome to the Narrow-Vein

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.

get price