Vertical Crater Retreat Mining Method Pdf

vertical crater retreat mining method pdf

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Vertical crater retreat The most common drill hole diameter used in VCR mining is 165mm Blasted ore is collected at the draw points using LHD vehicles, and then transported to ore passes, sometimes to be crushed, before it is transported to surface for processing Upon completion of the ore extraction, the stope is often backfilled from the top drift, providing rock stability for upcoming



vertical crater retreat mining method pdf

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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

vertical crater retreat mining method pdf

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opportunities for rock mechanics inputs A technical Note . November 2009 . Dr Gideon P Chitombo . Professor and Chair of Minerals Engagement . Sustainable Minerals Institute . The University of Queensland Australia . Background . The notion of the mine of the future using caving methods is becoming high priority with most major mining companies globally applying or intending to apply …



vertical crater retreat mining method pdf

What kinds of minerals are mined using vertical crater retreat

More stoping methods - The Northern Miner. Nov 8, 2004 Vertical crater retreat (VCR), also known as vertical retreat mining (VRM), reduces the cost of mining wide, steeply dipping orebodies.

Vertical crater retreat mining method pdf
VERTICAL CRATER RETREAT ResearchGate
vertical crater retreat mining method pdf

Mopani Copper Mines Wikipedia

Vertical crater retreat (VCR) mining (Figures 1.14, 1.15, and. 1.16) is a method originally developed by the Canadian mining. Chat Online Caving Underground Mining Methods (longwall, Sublevel caving

vertical crater retreat mining method pdf

Longitudinal Retreat Mining Method cz-eu.eu

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vertical crater retreat mining method pdf

SHORT DELAY BLASTING PRESENTATION Academia.edu

Vertical crater retreat (VCR) mining (Figures 1.14, 1.15, and. 1.16) is a method originally developed by the Canadian mining. Chat Online Caving Underground Mining Methods (longwall, Sublevel caving

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SRK also conclude that the Satellite Pipe could be satisfactorily mined using the vertical crater retreat method.

vertical crater retreat mining method pdf

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Although underground mining methods began with shrinkage stoping, timber stoping, and drawhole mining, they were replaced by mechanized cut-and-fill and vertical crater retreat methods in the late 1930’s (Caddey and others, 1991).

vertical crater retreat mining method pdf

Techniques in Underground Mining ILO Encyclopaedia

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. Part of the blasted ore will remain in the stope over the production cycle, serving as temporary support. This mechanized method can be regarded as a considerably safer form of shrinkage stoping, as no men have to work inside the stope

vertical crater retreat mining method pdf

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More stoping methods - The Northern Miner. Nov 8, 2004 Vertical crater retreat (VCR), also known as vertical retreat mining (VRM), reduces the cost of mining wide, steeply dipping orebodies.

vertical crater retreat mining method pdf

Notes on Vertical Crater Retreat Method Google Sites

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 drilling them in fans from bottom to top.

vertical crater retreat mining method pdf

Underground Mining Methods (3.1) YouTube

CHAPTER 1 Underground Mining Methods and Applications Production Headframe Hans Hamrin* 1.1 INTRODUCTION Ore is an economic concept. It is defined as a concentration of

Vertical crater retreat mining method pdf - Cave Mining Techniques Mining Information AZoMining.com

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