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Longitudinal Retreat Mining Method Reefkeeping

2021-3-25  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.

longitudinal retreat mining method santafefire

F, 2012. The Obuasi mine longitudinal retreat mining method application and challenges, in Proceedings Narrow Vein Mining 2012, pp 59-70 (The Australasian Institute of Mining . Island Gold mine Mining News and Intelligence. Mining Methods: The primary mining method is longitudinal retreat long-hole stoping.

longitudinal retreat mining method

The Avoca method will be used in areas where the ore dips at more than 32 to 40° but not steep enough for practical LH mining.R E M OT E M U C K I N G In some areas of the deposits, a longitudinal uppers retreat may be the only method of extraction.

Types of Mining Methods Sell Side Handbook

2018-3-11  Selecting a Mining Method. big-hole stoping, and vertical crater retreat. Longitudinal stoping, also referred to as bench stoping or sublevel benching is a preferred method when the orebody is thin and narrow and steeply dipping and sheet-like. While this would increase the mining cost on a per tonne basis, it may not impact mining

(PDF) Open Stope Mining in Canada ResearchGate

Longitudinal open stope mining, or sublevel retreat (after Potvin and Hudyma, 1989). Much of the development necessary for this mining method can be kept in the orebody.

LaRonde Extension Canadian Mining

2008-6-1  The deepest mining to date is on level 233 (2,330 m below surface), and the decline has reached level 242. LaRonde uses two mining methods: longitudinal retreat in 15-m sections with cemented rockfill or cemented pastefill, as well as transverse open stoping with both cemented and unconsolidated rockfill as well as cemented pastefill.

Major Mines & Projects Mining Intelligence and News

2019-11-29  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.

Vertical Crater Retreat Mining Method gmklein

Vertical Crater Retreat Mining In The Sudbury Basi. Faced with rising costs and lower metal prices several ontario base metal sulphide mines have changed their method of mining to vertical crater retreat mining this is a bulk mining method that utilises large diameter holes and mines successive cuts remotely by blasting and cratering the bottom of the drill holes the orebody is mined

Types of Mining Methods Sell Side Handbook

2018-3-11  Selecting a Mining Method. big-hole stoping, and vertical crater retreat. Longitudinal stoping, also referred to as bench stoping or sublevel benching is a preferred method when the orebody is thin and narrow and steeply dipping and sheet-like. While this would increase the mining cost on a per tonne basis, it may not impact mining cost

Selection of a Mining Method for the C. Anticline of the

2020-5-4  longitudinal retreat and transverse sublevel caving was proposed as a suitable mining method for C. Anticline. The cavability assessment for the proposed sublevel caving showed an increased probability of hanging wall caving as mining progresses. The proposed mining method was found to be economically viable.

Mining Terms magyver

2015-7-18  Longitudinal Retreat Mining: A method of mining an orebody beginning at one stope and gradually mining new stopes towards the central ore-handling system. Long-hole open stope: A method of mining involving the drilling of holes up to 90 feet long into an ore body and then blasting a slice of rock which falls into an open space.

Narrow Vein Mining Conference 2012 Proceedings

2016-3-30  The Obuasi Mine Longitudinal Retreat Mining Method Application and Challenges F Nsarko and F Owusu-Mensah 59 Challenges Faced by Narrow Vein Graphite Mining and Infl uence of Graphite Infi ll on Wall Stability H S Welideniya and K Ekanayake 71 Geology and Evaluation Review of the Advances Made in Geological

Longhole Welcome to the Narrow-Vein Mining Project

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.

Business Planning Group Vale

2015-8-13  1.3 Vertical Retreat Mining Vertical retreat mining (VRM) is a bulk method of mining used in most of Vale’s underground mines. It is a versatile method that can be used for longitudinal or transverse mining applications. VRM is best suited for ore dipping at 55° or greater and may be used in a variety of ground conditions, where the drilled

Thesis Effect of stope construction parameters on ore

The scope of the thesis is a case study of the Lapa Mine of Agnico Eagle Mines Limited, a gold mining operation situated in the Abitibi region of Quebec. The Lapa orebody is a narrow vein, steeply dipping deposit with varying width, and is extracted with longitudinal retreat mining method.

Vertical Crater Retreat Mining Method gmklein

Vertical Crater Retreat Mining In The Sudbury Basi. Faced with rising costs and lower metal prices several ontario base metal sulphide mines have changed their method of mining to vertical crater retreat mining this is a bulk mining method that utilises large diameter holes and mines successive cuts remotely by blasting and cratering the bottom of the drill holes the orebody is mined

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.

Chris Hadfield, P.Eng Senior Mine Engineer

• Lead conceptual meetings and presented new mining method options to be utilized with WebGens • Designed Musselwhite’s first PLR (pre-loaded longitudinal retreat) stope with WebGens which proved extremely successful, saving significant time and increasing production in the

longitudinal retreat mining method santafefire

F, 2012. The Obuasi mine longitudinal retreat mining method application and challenges, in Proceedings Narrow Vein Mining 2012, pp 59-70 (The Australasian Institute of Mining . Island Gold mine Mining News and Intelligence. Mining Methods: The primary mining method is longitudinal retreat long-hole stoping.

Selection of a Mining Method for the C. Anticline of the

2020-5-4  longitudinal retreat and transverse sublevel caving was proposed as a suitable mining method for C. Anticline. The cavability assessment for the proposed sublevel caving showed an increased probability of hanging wall caving as mining progresses. The proposed mining method was found to be economically viable.

Canadian Malartic JV partners International Mining

2021-2-11  Longitudinal retreat and transverse primary-secondary mining methods will also be used dependent on mineralisation geometry and stope design criteria. Developing the continuity of the deposit in the Canadian Malartic and Barnat pits through four main mineralised zones at depth (East Gouldie, East Malartic,Odyssey North and Odyssey South) will

Business Planning Group Vale

2015-8-13  1.3 Vertical Retreat Mining Vertical retreat mining (VRM) is a bulk method of mining used in most of Vale’s underground mines. It is a versatile method that can be used for longitudinal or transverse mining applications. VRM is best suited for ore dipping at 55° or greater and may be used in a variety of ground conditions, where the drilled

Stability of underground mine development

The longitudinal method uses two drifts (upper and lower) running along the strike through the orebody with fewer cross cuts, thus requiring less mine development. Stoping and backfilling are often practiced in longitudinal retreat; see Fig. 1c. Both transverse and longitudinal stoping methods are particularly suited for steeply dipping orebodies.

Vertical crater retreat mining in the Sudbury Basin

1991-9-1  Min. Sci. Technol., 13: 131-143. Faced with rising costs and lower metal prices, several Ontario base metal sulphide mines have changed their method of mining to vertical crater retreat mining. This is a bulk mining method that utilizes large diameter holes and mines successive cuts remotely by blasting and cratering the bottom of the drill holes.

(PDF) 2 Mining methods and method selection 12.1

361 MINING METHODS AND METHOD SELECTION Figure 12.9 Schematic layout for VCR stoping is applicable in many cases where conventional shrink stoping is VCR stoping; (a) mining primary stopes, and (b) mining secondary feasible, although narrow orebody widths (less than about 3 m) may not be tractable. stopes (after Hamrin, 2001).

Effect of delayed backfill on open stope mining

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

Adriatic Metals plc Pre-Feasibility Study Mining

2020-10-15  As discussed below, the selected mining method for the Rupice deposit was underground mining, whilst the Veovaca deposit is amenable to conventional open mining methods. Conceptually, the mining recovery for both Rupice and Veovaca have been estimated at 95% and the average dilution factors for Rupice and Veovaca are 10.5% and 10% respectively.

Chris Hadfield, P.Eng Senior Mine Engineer

• Lead conceptual meetings and presented new mining method options to be utilized with WebGens • Designed Musselwhite’s first PLR (pre-loaded longitudinal retreat) stope with WebGens which proved extremely successful, saving significant time and increasing production in the