There are six steps in development mining remove previously blasted material muck out round scaling removing any unstable slabs of rock hanging from the roof and sidewalls to protect workers and equipment from damage installing support or/and reinforcement using shotcrete etceteras drill face rock load explosives and blast explosives
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Get Price1 Underground Mining Methods Classification of Underground Mining Methods Mineral production in which all extracting operations are conducted beneath the ground surface is termed underground mining Underground mining methods are usually employed when the depth of the deposit and/or the waste to ore ratio stripping ratio are
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Get PriceUnderground mining is a distinct segment of the mining sector Underground mining is generally used to extract minerals that are too far underground for surface mining to be economical There are many different underground mining methods that can be implemented depending on the mineral being mined and the nature of the deposit
Get Price1 Introduction 2 Equipment Utilized 3 Drilling Patterns Wedge plough or V cut Pyramid or Diamond Cut Drag and fan cuts Breast Cut or Slashing Burn or parallel hole cuts 4 Sequencing 5 Powder Factor 6 Burden and Spacing 7 References Introduction Blasting tunnels or drifts is a necessity in all underground mining operations
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