Our vertical crater retreat mining method

Vertical crater retreat mining in the Sudbury Basin ...


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.

POSSIBILITY OF APPLICATION OF BACKFILL …


Vertical crater retreat mining method - VCR Vertical Crater Retreat method applies to orebodies with steep dip and competent rock in both ore and host rock.

View source for Vertical crater retreat - …


View source for Vertical crater retreat. From QueensMineDesignWiki ← Vertical crater retreat. Jump to: navigation, search. You do not have permission to edit this ...

Design and Application of Sublevel Stoping Methods ...


Introduction. This course refers to the generic mining method of sublevel stoping. The most commonly used sublevel stoping mining methods are sublevel open stoping, long-hole open stoping or blasthole stoping, and vertical crater retreat (VCR).

Geotechnical aspects of vertical crater mining method …


Vertical Crater Retreat is compared to other open stoping methods. Various geotechnical factors have been considered including the effects of stress concentration, jointing, dynamic stresses...

Underground mining techniques - Universidade …


Underground Mining Methods and Applications ... Deposits with large vertical heights are mined in slices. Mining starts at the top below the hanging wall.

Vertical Crater Retreat | Mining | Nature - Scribd


CASE STUDY ON VERTICAL. CRATER RETREAT MINING BY: SUJAN DALBEHERA DEVGAN SINGH ABHAYA MISHRA 1 VCR MINING Vertical crater retreat (VCR) mining is a method originally developed by the Canadian

Underground Mining Methods (3.1) - YouTube


Jan 14, 2013· Underground Mining Methods (3.1) Nikzad7. Loading ... Block Caving Mining Method - Duration: 3:17. Atlas Copco Underground 125,706 views. 3:17.

Cut And Fill Mining Method - YouTube


Nov 09, 2015· Cut and fill mining method is a favored choice for steeply dipping and sometimes irregular orebodies and preferred by mines that require the capability ...

vertical crater retreat mining method vcr - tsimpianti.eu


vertical crater retreat mining method – Grinding Mill … 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 ...

Shrinkage and Vertical Crater Retreat Stoping - …


Underground mining method; Shrinkage stoping, Ascending method of mining, Advantages and Disadvantages, Vertical Crater Retreat stoping, Introduction, Applica…

Vertical Crater Retreat | Mining | Industries - Scribd


Vertical Crater Retreat. Blasthole mining is a general term applied to mining methods that employ long hole drilling for the production of ore. In most Blasthole methods the ore is blasted into a vertical opening.

Vrm Vertical Crater Retreat - vivinapoli.eu


vrm vertical crater retreat. Vertical Crater Retreat Mining Method vertical crater retreat mining method hoisting 50 000 t week are hauled at shrinkage stoping vcr ...

Vertical Crater Retreat - RitchieWiki


A vertical crater retreat (VCR), also referred to as vertical retreat mining, involves drilling large-diameter holes into the orebody vertically from the top of the mine, as opposed to the conventional blasthole stope method of …

VERTICAL CRATER RETREAT - ResearchGate


VCR MINING. Vertical crater retreat (VCR) mining is a method originally developed by the Canadian mining company INCO. Today, VCR is an established mining method used by mines all over the world that have competent, steeply dipping ore and host rock.

vertical crater retreat mining method – Grinding Mill …


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 large-scale underground mining based on CW ~ivingston'scrater.

vertical crater retreat (VCR) – Mining and Blasting


Posts about vertical crater retreat ... Weblog of Partha Das Sharma For Discussing Various Aspects of Mining, Explosives and ... Vertical Crater Retreat (VCR) method.

Notes on Vertical Crater Retreat Method - Google …


Notes on Vertical Crater Retreat Method ... mining rate Case Studies Falconbridge Nickel Mines - used for rib pillar recovery (before VCR was employed, ...

Underground mining (hard rock) - Wikipedia


There are two principal phases of underground mining: ... (VRM) also known as Vertical crater retreat (VCR) is a method where mine is divided in vertical zones ...

302 - A Framework for Stope Sequence Optimization


A Framework for Stope Sequence Optimization ... The mining method used, possibly sublevel stoping or vertical crater retreat,

Vertical Crater Retreat (VCR): Underground Mine Design ...


Mining and Minerals Engineering: ... Applications appropriate for Vertical Crater Retreat ... -higher risk for damaging surrounding rock than SLOS method-dilution.

A new model for mining method T selection of …


Mining method selection is a critical point and a strategic issue in the mining engineering ... vertical crater retreat mining (VCR), strip mining and novel

(PDF) Underground mining Methods - ResearchGate


Underground Mining Methods; Soft rock Mining ... Stull stoping; Square-set stoping; Shrinkage stoping; Long-hole Open stoping ; Vertical Crater Retreat (VCR ...

open pit mining methodvertical crater retreat mining methods


4. History of underground mining - SAIMM. History of open pit mining ... level caving and vertical crater retreat mining methods with varying degrees of ... using open benching as the mining method.

Longitudinal Retreat Mining Method - concept …


Vertical crater retreat mining in the Sudbury Basin ... 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.

Vertical crater retreat - QueensMineDesignWiki - CEMI


Vertical crater retreat (VCR), also known as Vertical retreat mining, is an open stoping, ... "Vertical Crater Retreat Mining Method" Accessed online, ...

vertical crater retreat mining method - teratop.eu


Underground mining methods(Hans Fernberg )_ …... Vertical crater retreat VRM – Vertical retreat mining Underground Mining Methods Sub Level Caving General layout The cave starts below open pit bottom progressing ...

Research Study on Pillar Design for Vertical Crater ...


A true vertical crater retreat (VCR) method was ... Research Study on Pillar Design for Vertical Crater Retreat (VCR) Mining. ... while a vertical bench mining method ...

Mopani Copper Mines - Wikipedia


Mopani Copper Mines PLC ... Vertical crater retreat ... Vertical crater retreat is the predominant mining method while sublevel open-stopping and sublevel caving ...

Blasting in High Production UG Metal Mines workings ...


Aug 04, 2011· Mining and Blasting ... Blasting in High Production UG Metal Mines workings – Vertical Crater Retreat (VCR) ... ← Tunnel Construction Methods and their ...


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