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2021-04-24T09:04:20+00:00
  • Mining by rock cutting in narrow reefs - SAIMM

    Mining by rock cutting in narrow reefs R. PICKERING*, A. SMIT* and K. MOXHAM† *Sandvik †Lonmin Platinum Since the early 1970s research has been ongoing to develop a cost-effective way of continuously mining the narrow reef, hard rock, typical of South African gold and platinum mines. In

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  • narrow reef mining production figures

    An overview of Southern African PGM smelting- narrow reef mining production figures ,RT Jones, An overview of Southern African PGM Smelting, Nickel and Cobalt 2005: Challenges in Extraction and Production,PGM production in 2004, in millions of troy ounces per annum , this year to allow the release of official production figures for PGMs, and it is still too early for this information to be ...

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  • narrow reef mining production figures - alderbuebe.ch

    narrow reef mining production figures. Master Drilling Services. Master Drilling offers a comprehensive portfolio of niched drilling services, adapting to, and meeting each and every client requirement: We offer cutting-edge solutions across the mining, energy and civil engineering sectors; focusing on speed, efficiency, innovation, scale ...

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  • Long hole drilling applied to narrow reef mining

    LONG HOLE DRILLING APPLIED TO NARROW REEF MINING 199 Objective The purpose of this report is to chronicle the interaction between Anglo Platinum and Sandvik Tamrock during the development and application of Long Hole drilling as a viable, practical method of narrow reef mining. Appendix I identifies the people from Anglo Platinum and Sandvik

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  • definition of flat tabular reef in gold mining

    reef mining techniques mcimbidesigns.co.za. narrow reef mining production figures makabsworg. New mining methods and systems for narrow reef, Mining finding increased acceptance in the industry, we have, side of a major geological structure, . Chat Now definition of flat tabular reef in gold mining.

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  • definition of flat tabular reef in gold mining

    based on the information that the reef was flat dipping8. When production commenced and tabular gold mines, therefore new techniques of mining them had to be developed. The underhand mining method was chosen for this Literature research on the mining of tabular steep reefs

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  • AN ANALYSIS OF THE ASSOCIATION BETWEEN ERGONOMIC

    illnesses in narrow reef mining at Goldfields of Mazowe (GFM).The analytical research design was employed and cross verification was done through combining several methods thus triangulation were both qualitative and quantitative research approaches were used. Data was

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  • Evaluating the Viability of Pumpable Emulsion Explosives ...

    2 Declaration I declare that “Evaluating the Viability of Pumpable Emulsion Explosives for use in Narrow Reef Mining Operations” is my own work, that it has never been submitted for any examination or degree in any other university, and that all sources to which I have made

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  • ‘Rock cutting’ – platinum mining of the future?

    Rock-cutting methods would largely be focused on on-reef mining layouts with little or no infrastructure located outside the reef envelopes. The major economic reefs in the BC are the UG2 and Merensky reefs, which are narrow and tabular in shape. The general stratigraphy and geology is well understood, and these reefs have been mined for more

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  • MECHANIZING NARROW, TABULAR REEFS IN THE PLATINUM

    MECHANIZING NARROW, TABULAR REEFS IN THE PLATINUM INDUSTRY - THE ULTIMATE CHALLENGE (JULY 2002) MARK SEAN FARREN MINE MANAGER BAFOKENG RASIMONE PLATINUM MINE SYNOPSIS We live in a time, which is characterised by vicious swings in fortune. Equity moves as if by magic across international fronts, seamlessly interfacing with areas of potential.

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  • AN ANALYSIS OF THE ASSOCIATION BETWEEN ERGONOMIC

    illnesses in narrow reef mining at Goldfields of Mazowe (GFM).The analytical research design was employed and cross verification was done through combining several methods thus triangulation were both qualitative and quantitative research approaches were used. Data was

  • More
  • definition of flat tabular reef in gold mining

    based on the information that the reef was flat dipping8. When production commenced and tabular gold mines, therefore new techniques of mining them had to be developed. The underhand mining method was chosen for this Literature research on the mining of tabular steep reefs

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  • deep reef mining equipment - praktijkvanderbij.nl

    Reef was LONG HOLE DRILLING APPLIED TO NARROW REEF MINING . Reef Mining Techniques. equipment used for deep reef mining grinding mill equipment what equipment did they use for deep reef mining what . all mining techniques being . Get Price And Support Online; The development and implementation of the .

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  • Optimisation of a Mechanised Platinum Mining Section

    One of the biggest challenges of mining the UG2 is that the reef is very narrow (60-80cm). A large amount of injuries occur at the stope face of narrow reef mines. Mining companies realise that they have to develop new mining technologies to improve safety. One of the new

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  • Harmony Gold (mining) - Wikipedia

    Doornkop, a single-shaft operation, is located in the province of Gauteng of South Africa, approximately 30 kilometres west of Johannesburg, on the northern rim of the Witwatersrand Basin. Mining is conducted at a depth of 1 978 metres. The operation focuses on narrow-reef conventional mining of the South Reef.

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  • What is the best energy-delivery system for hand-held ...

    Mining is an uncertain activity with both ... best solution for narrow-reef hard rock mines, based on current information, mine design layout and production. Keywords hand-held stope drilling, energy delivery system, multiple-criteria ... in Figures 1–4. Assumptions

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  • (PDF) A progress report on ultra-high-pressure waterjet ...

    A progress report on ultra-high-pressure waterjet cutting underground: the future of narrow reef gold and PGE mining. ... can be modified to estimate tight formation IWC using solely production ...

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  • Platinum is produced in South Africa by Amplats, Impala ...

    Most production figures are from the 1998 annual reports of the companies, 4-8 although the estimates for production at Noril’sk are based on news ... South African reserves of platinum-group metals are concentrated in narrow but extensive strata known as the Merensky Reef, the Platreef, and the UG2 chromitite layer. ... Platinum mining on a ...

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  • AEL Blasting News - third quarter by AEL Mining Services ...

    Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Easily share your publications and get them in front of Issuu’s ...

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  • TWENTY FIVE YEARS OF MECHANISATION OF TABULAR

    TWENTY FIVE YEARS OF MECHANISATION OF TABULAR OREBODIES IN SOUTH AFRICAN GOLD AND PLATINUM MINES . K.A.RHODES: OCTOBER 2015 . ... Twenty Five Years of Mechanisation of Tabular Orebodies in South African Gold and Platinum Mines. 1. 1. ... Narrow Reef Mechanisation at Cooke 2 Shaft, Randfontein Estates ...

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  • A review of preconditioning and its influence on mining ...

    A review of preconditioning and its influence on mining conditions with particular emphasis on health and safety ... injuries in narrow reef mining. ... deaths to the workers and lost production ...

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  • Doornkop Gold Mine - Johannesburg - Wikimapia

    At Doornkop, both the Kimberley and South reefs are mined by means of narrow reef, conventional mining and mechanised bord and pillar mining. Production at the Doornkop South Reef Project, on which development began in FY03 and which enables access to the higher grade South Reef, began in

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  • Break it Better - Mine Blast Fragmentation - International ...

    Blast fragmentation should be optimised for material haulage, comminution and mineral processing. In this month’s im-mining Spotlight Feature Article, from the September issue of International Mining, John Chadwick examines some technologies and the benefits accruing

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  • Queensland gold

    Mining virtually ceased during World War 1 and has been sporadic since. Total production from 1900 to 1951 was 291.58kg, made up of 1371.63kg of reef gold from 34196 tonnes of ore, 682.41kg of alluvial gold, and 237.54kg from the treatment of 19 256 tonnes of tailings. Mining at Ebagoola was centred about the old townsite.

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  • (PDF) A progress report on ultra-high-pressure waterjet ...

    A progress report on ultra-high-pressure waterjet cutting underground: the future of narrow reef gold and PGE mining. ... can be modified to estimate tight formation IWC using solely production ...

  • More
  • What is the best energy-delivery system for hand-held ...

    Mining is an uncertain activity with both ... best solution for narrow-reef hard rock mines, based on current information, mine design layout and production. Keywords hand-held stope drilling, energy delivery system, multiple-criteria ... in Figures 1–4. Assumptions

  • More
  • A review of preconditioning and its influence on mining ...

    A review of preconditioning and its influence on mining conditions with particular emphasis on health and safety ... injuries in narrow reef mining. ... deaths to the workers and lost production ...

  • More
  • Doornkop Gold Mine - Johannesburg - Wikimapia

    At Doornkop, both the Kimberley and South reefs are mined by means of narrow reef, conventional mining and mechanised bord and pillar mining. Production at the Doornkop South Reef Project, on which development began in FY03 and which enables access to the higher grade South Reef, began in

  • More
  • Queensland gold

    Mining virtually ceased during World War 1 and has been sporadic since. Total production from 1900 to 1951 was 291.58kg, made up of 1371.63kg of reef gold from 34196 tonnes of ore, 682.41kg of alluvial gold, and 237.54kg from the treatment of 19 256 tonnes of tailings. Mining at Ebagoola was centred about the old townsite.

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  • Doornkop - Harmony

    Mining is conducted at a depth of 1 978 metres. The operation focuses on narrow-reef conventional mining of the South Reef. The ore from the operation is processed at the Doornkop plant. For more information, see the relevant section of the Mineral resources and

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  • 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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  • rock breaking machine mining - kaartje-sturen-met-artoek.nl

    A hard rock narrow reef mining machine—ARM 1100. ... we engineer an extensive range of underground drill rigs for mining development and production. underground drill rigs are productive, reliable and economical – even in your most demanding production and face drilling applications.

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  • Blyvoor Gold Mine - Mining Technology Mining News and ...

    Mining. Blyvoor is an underground mine. Ore is mined using conventional drill, blast and scape narrow-reef mining methods. Due to combined operations at Blyvoor and Doornfontein, ores have become accessible through a number of methods.

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  • Break it Better - Mine Blast Fragmentation - International ...

    Blast fragmentation should be optimised for material haulage, comminution and mineral processing. In this month’s im-mining Spotlight Feature Article, from the September issue of International Mining, John Chadwick examines some technologies and the benefits accruing

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  • Gold Project Inventory - Gold in Ironstone and Quartz Reef ...

    This reef strikes north-south over more than 150 metres in length and is just west of Pine Creek and about 3.1 kilometres south westerly from Dalmorton. In 1872 a portion of the reef formation, containing a quartz vein 0.3 m. wide, was worked but no production figures are available. MCRAE'S

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  • Underground mining (hard rock) - Wikipedia

    Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, usually those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds or rubies. Soft rock mining refers to excavation of softer minerals such as salt, coal ...

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  • The Top Platinum Producing Countries In The World ...

    Apr 25, 2017  The Merensky Reef, the major platinum source, was first used for platinum mining in 1925 until the close of the 20th century. The UG2 Reef opened in the 1970s and from then on became the major source of platinum in South Africa, accounting for over a

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  • Target Gold Mine, Free State province, South Africa ...

    MINING METHODS. From the outset, Avgold planned Target to be highly mechanised, using long-hole stoping where reef widths allow this, and either cut-and-fill or long-hole stoping in narrow reef areas. Broken ore is handled using remote-controlled Sandvik load-haul-dump machines. Drift-and-fill mining is used in flat-lying reef areas.

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