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vertical crater retreat mining method

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    A method of underground mining operation. This feature is not available right now. Please try again later.

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    Shrinkage stoping Vertical Crater Retreat stoping

    Vertical Crater Retreat (VCR) or Vertical Retreat Stoping: configuration method in stopes where drilling large diameter is used to detonate horizontal slices of ore, leading them to the base of

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  • vertical crater retreat (VCR) Mining and Blasting

    Posts about vertical crater retreat (VCR) written by PARTHA DAS SHARMA. Mining and Blasting Weblog of Partha Das Sharma For Discussing Various Aspects of Mining, Explosives and Blasting . crater retreat (VCR) August 4, 2011 by PARTHA DAS SHARMA. Blasting in High Production UG Metal Mines workings Vertical Crater Retreat (VCR) method

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    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

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  • Shrinkage and Vertical Crater Retreat Stoping SlideShare

    Shrinkage and Vertical Crater Retreat Stoping 1. Hassan Z. Harraz [email protected] 2014 2015 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors.

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  • Vertical Crater Retreat Mining Nature Scribd

    CASE STUDY ON VERTICAL. CRATER RETREAT MINING. BY: SUJAN DALBEHERA DEVGAN SINGH ABHAYA MISHRA 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.

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  • Study on the longhole raising technique using one blast

    On the other hand, several blasting technique innovations have also improved the raising safety. In Canada in 1975, mining company INCO developed a mining method based on Livingston's cratering theory. This method is called vertical crater retreat (VCR) or vertical retreat mining (VRM) method.

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  • Vertical crater retreat QueensMineDesignWiki

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  • 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. 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.

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