• Lecture 4: Underground Mining SlideShare

    Nov 02, 2011· Underground mining, Underground mining methods. Lecture 4: Underground Mining 1. Hassan Z. Harraz [email protected] 2010- 2011 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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  • Underground mining SlideShare

    Oct 16, 2015· Underground mining 1. Mohammad Esa Rasuly [email protected] III-B.Tech Mining GIET (A) Rajahmundry 2. Underground mining is a technique used to access ores and valuable minerals in the ground by digging into the ground to extract them in an economical way.

  • PPT Coal Mining PowerPoint presentation free to

    underground. Blast mining-is the controlled use of explosives to excavate or remove rock ; Retreat mining-is a term used to reference the final phase of an underground mining technique known as room and pillar mining. This involves excavating a room or chamber while leaving behind pillars of material for support. 8 Other Methods of Coal Mining

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  • Underground Mining Methods MineralsEd

    Underground Mining Methods Glossary Bolting drilling a hole, and inserting a bolt to strengthen the ceiling and walls of an underground mine Crusher a machine used to crush ore before it is transported Drift a horizontal underground tunnel that follows a vein or ore body

  • Six ways to take primary crushing underground Australian

    Aug 01, 2014· Underground mining presents a unique set of challenges, so careful planning pays off. 's Eero Hamalainen examines the big decisions in taking primary jaw crushers underground.

  • Mining Methods VS Underground Crusher Location

    Table of ContentsLow Head Room Room and PillarHigh Head Room Room and PillarLimestone MinesLead MinesOil shaleNon Room and Pillar MinesBlock CavingSublevel CavingSublevel StopingMechanized Cut & FillMinor and Combination MethodsAdvantages & Benefits of Decentralised CrushingLow Head Room Room and Pillar MinesSalt and Potash MinesWhite Pine Copper MineHigh

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  • Underground Mining Methods and Equipment

    1. Underground Mining Methods 1.1. 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 too great

  • (PDF) Underground mining Methods ResearchGate

    Longwall mining is a highly mechaniz ed underground mining sys tem for mining coal. It set of longwall mining equipment consists of a coal shear er mounted on convey or operating

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  • Chapter 1 LONG- AND SHORT-TERM PRODUCTION

    surface methods, but about 1960, the pit deepened to such an extent that it became more cost-effective to mine underground. The underground mining method Kiruna currently employs is knownas large-scale sublevel caving. This method is used for extracting ore from vertically positioned, fairly pure, large, vein-like deposits.

  • Underground mining SlideShare

    Oct 16, 2015· Underground mining 1. Mohammad Esa Rasuly [email protected] III-B.Tech Mining GIET (A) Rajahmundry 2. Underground mining is a technique used to access ores and valuable minerals in the ground by digging into the ground to extract them in an economical way.

  • 181089468-Mine-Planning-Design.ppt Coal Mining Mining

    COAL MINE PLANNING & DESIGN-A.V.REDDY, ADDL.MANAGER The Singareni Collieries Company Limited Mining Methods Generally Coal is being mined by two main methods 1. Surface or Opencast mining 2. Underground mining. The cho of method is largely determined by the depth, thickness and no. of coal seams, geology of the coal deposit and other factors.

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    underground. Blast mining-is the controlled use of explosives to excavate or remove rock ; Retreat mining-is a term used to reference the final phase of an underground mining technique known as room and pillar mining. This involves excavating a room or chamber while leaving behind pillars of material for support. 8 Other Methods of Coal Mining

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  • Types of Mining Methods Sell Side Handbook

    Mar 09, 2018· A highly productive underground mining method, longwall mining is used in a large horizontal spread of thin-bedded deposits of uniform thickness usually ranging from 0.6m to 1m. Used a lot by South African gold mining companies, this method can be used in both soft and hard rocks as the ing area along the mining face can be supported

  • UNDERGROUND MINING METHODS YouTube

    Subject :GEOLOGY Course :ENERGY RESOURCES AND MINERAL EXPLORATIONS Keyword : SWAYAMPRABHA

  • Chapter 1 LONG- AND SHORT-TERM PRODUCTION

    surface methods, but about 1960, the pit deepened to such an extent that it became more cost-effective to mine underground. The underground mining method Kiruna currently employs is knownas large-scale sublevel caving. This method is used for extracting ore from vertically positioned, fairly pure, large, vein-like deposits.

  • Surface Mining Methods and Equipment

    pit techniques, lead and zinc ore are principally extracted by underground mining methods, and precious metals, particularly gold and most notably in the USA and Australia, tend to be recovered in recent years from low-grade deposits by surface mining. Figure 1a. Production size distribution of metal mines for the period 1988 to 1997 in the

  • Underground Mining Methods — New Pacific Metals

    Block caving is essentially the underground version of open-pit mining. It’s the only underground mining method that can reach similar production rates to surface mining operations, up to over 100,000 tonnes per day. The method involves undermining an ore body, then allowing it

  • BREAK-EVEN ANALYSIS OF MINING PROJECT

    2.3 Surface vs. underground mining costs 5 2.3.1 Mining method costs 6 2.4 Budgeting and cost control 8 2.5 Capital budgeting: methods of appraisal 11 2.5.1 Traditional methods 12 2.5.1.1 Payback period method 12 2.5.1.2 Accounting rate of return method 13 2.5.2 Discounted cash flow methods 14 2.5.2.1 Net present value (NPV) 14