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Variations in ultra-deep, narrow reef stoping ...

2021-4-14  for narrow reef mining in ultra-deep operations in very hot rock. The stope ventilation and cooling needs are driven primarily by the difference between the air temperature and that of the rock front being excavated. These needs depend on the face utilization, geometry, face advance (rate and direction), layout, backfill, use of water and ...

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Mining by rock cutting in narrow reefs

2016-2-16  invested capital. For narrow reef hard rock mining to break out of these constraints and to really make progress in the 21st century, it is necessary to follow the lead of the soft rock mining industry and change the technology of mining. In the underground coalmining industry, coal cutting has been proven to be the most cost-effective solution ...

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(PDF) Narrow-reef mechanized mining layout at Anglo ...

Narrow-reef mechanized mining lay out at Anglo American Platinum 8-47 8.9394'8968!9)7689+8.726 The introduction of the latest generation ULP and XLP

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v117n3a8 Narrow-reef mechanized mining layout at

2017-4-26  ULP mining below 400 m utilizing the narrow-reef mechanized mining layout has been shown to create signifi-cantly more value from both a financial and an operational perspective, due to the extraction ratios that can be achieved using these methods coupled with the overall efficiencies (>4000 m2 production per month) of the XLP/ULP equipment.

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Optimization of blasting in narrow reef mines in South

2019-12-10  mine narrow reefs, having a seam height of the order of 1 m at dips between 5 and 30 degrees. Tradition-ally, CFIC initiation has been used for blast initia-tion for reasons of low cost and ease of use. Narrow reef mining requires that the minimum practicable stoping width is

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Welcome to MECHANICAL CUTTING

2021-8-16  Figures refer to Mechanical Cutting Division total 2020. MECHANICALCUTTING. ... Narrow reef production system CONTINUOUS HAULAGE • PO140 – Extendable Belt system ... Reef Mining System MN330. MECHANICALCUTTING 19 FOR MORE SAFETY PRODUCTIVITY Alpine Miner AM 50, most sold roadheader ...

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The optimization of mining method and equipment

2009-8-26  the South African narrow reef mining industry has battled to control working costs in a labour-intensive industry. It is only through the application of appropriate technology that change will occur. It is the stoping method that is at the heart of the mining system. Introduce a different technology that results in a more efficient stoping ...

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Major Mines Projects Doornkop Mine

Mining Methods. Doornkop is a single-shaft operation currently exploiting the South Reef to some 2000m below surface. The narrow South Reef is exploited by means of conventional stoping. Mining of the Kimberley Reef was suspended during FY14 to focus on the build-up of production from the South Reef and to prevent losses as a result of the ...

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IMPROVING THE MINING EFFICIENCIES UTILISING A

2019-8-28  Basal reef. A challenging mining environment resulted in a support design consisting of pack support. An analysis of the mining efficiencies highlighted that the support installation and sub-standard support hampered the production rates resulting in lost blasts.

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THE BUSINESS OF MINING - Anglo American Platinum

2019-10-24  1. Conventional mining can be done any reef dip 2. Mechanised mining typically never gets done when the reef dips more than 10° 3. Conventional mining can be done at mining widths upto 2,0 metres, whereas Mechanised can be done above 2.0 metres 4. Shaft systems, the sequence is 1st Gen, 2nd Gen, etc. The sequence is highly

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v117n3a8 Narrow-reef mechanized mining layout at

2017-4-26  ULP mining below 400 m utilizing the narrow-reef mechanized mining layout has been shown to create signifi-cantly more value from both a financial and an operational perspective, due to the extraction ratios that can be achieved using these methods coupled with the overall efficiencies (>4000 m2 production per month) of the XLP/ULP equipment.

Read More
Optimization of blasting in narrow reef mines in South

2019-12-10  mine narrow reefs, having a seam height of the order of 1 m at dips between 5 and 30 degrees. Tradition-ally, CFIC initiation has been used for blast initia-tion for reasons of low cost and ease of use. Narrow reef mining requires that the minimum practicable stoping width is

Read More
Sandvik MN330 narrow reef miner to help up productivity

2021-9-23  With its new and innovative Sandvik MN330 narrow reef production system, Sandvik Mining and Rock Solutions says it has succeeded in developing a new method for continuous hard rock mining. Anglo American has placed the first order, which is currently being assembled in Zeltweg, Austria, and is due to be shipped to the Mototolo platinum mine in South Africa before the end of 2021.

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[PDF] The application of pumpable emulsions in narrow

Corpus ID: 54680437. The application of pumpable emulsions in narrow-reef stoping @article{Pearton2015TheAO, title={The application of pumpable emulsions in narrow-reef stoping}, author={S. Pearton}, journal={Journal of The South African Institute of Mining and Metallurgy}, year={2015}, volume={115}, pages={489-497} }

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Bord-and-pillar mining in inclined orebodies

2021-1-31  Minimize off-reef development in order to gain quicker access to the orebody, thereby eliminating preliminary development costs. All the advantages of bord-and-pillar mining make this method sound like the ultimate cost effective and efficient mining

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IMPROVING THE MINING EFFICIENCIES UTILISING A

2019-8-28  Basal reef. A challenging mining environment resulted in a support design consisting of pack support. An analysis of the mining efficiencies highlighted that the support installation and sub-standard support hampered the production rates resulting in lost blasts.

Read More
Major Mines Projects Doornkop Mine

Mining Methods. Doornkop is a single-shaft operation currently exploiting the South Reef to some 2000m below surface. The narrow South Reef is exploited by means of conventional stoping. Mining of the Kimberley Reef was suspended during FY14 to focus on the build-up of production from the South Reef and to prevent losses as a result of the ...

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‘Rock cutting’ – platinum mining of the future?

2014-10-31  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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THE BUSINESS OF MINING - Anglo American Platinum

2019-10-24  1. Conventional mining can be done any reef dip 2. Mechanised mining typically never gets done when the reef dips more than 10° 3. Conventional mining can be done at mining widths upto 2,0 metres, whereas Mechanised can be done above 2.0 metres 4. Shaft systems, the sequence is 1st Gen, 2nd Gen, etc. The sequence is highly

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Strategies for Minimising and Predicting Dilution in ...

2019-10-10  typical narrow vein dilution costs of $25/tonne; mining direct operating costs (mucking and trucking $7/tonne) and milling ($18/tonne), and assuming 500 000 tonnes per annum ore production, Figure 1 demonstrates how the cost of 25 cm of dilution increases as vein width decreases. Based on this simplified economic model, a mine with a 25 cm ...

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Sandvik MN330 narrow reef miner to help up productivity

2021-9-23  With its new and innovative Sandvik MN330 narrow reef production system, Sandvik Mining and Rock Solutions says it has succeeded in developing a new method for continuous hard rock mining. Anglo American has placed the first order, which is currently being assembled in Zeltweg, Austria, and is due to be shipped to the Mototolo platinum mine in South Africa before the end of 2021.

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TWENTY FIVE YEARS OF MECHANISATION OF TABULAR

2021-3-26  4.1 Arguments for Narrow Reef Mechanised Operations 97 . 4.2 Motivational Technical Report for 95L UE1A Reef at Cooke 2 Shaft 103 . 4.3 The Start of Narrow Reef Mechanisation at Cooke 2 Shaft, REGM 115 . 4.4 101 Level Streamlined Haulage 129 . 4.5 Kimberley Reefs 131

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[PDF] The application of pumpable emulsions in narrow

Corpus ID: 54680437. The application of pumpable emulsions in narrow-reef stoping @article{Pearton2015TheAO, title={The application of pumpable emulsions in narrow-reef stoping}, author={S. Pearton}, journal={Journal of The South African Institute of Mining and Metallurgy}, year={2015}, volume={115}, pages={489-497} }

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‘Rock cutting’ – platinum mining of the future?

2014-10-31  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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Gold Narrow Reef Mining Methods - ricalewis.pl

2020-3-6  Gold Project Inventory - Gold in Ironstone and . The Pine Creek reef, about 2.6 kilometres south-west of Dalmorton consists of a near-vertical lode of siliceous iron stone extending east from Pine creek over about 500 metres and was prospected by the Occidental Gold-mining Company in 1899-1900 with several tunnels, shafts and cross-cuts to determine the size and grade. 25 tonnes were sent to ...

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Major Mines Projects Doornkop Mine

Mining Methods. Doornkop is a single-shaft operation currently exploiting the South Reef to some 2000m below surface. The narrow South Reef is exploited by means of conventional stoping. Mining of the Kimberley Reef was suspended during FY14 to focus on the build-up of production from the South Reef and to prevent losses as a result of the ...

Read More
Strategies for Minimising and Predicting Dilution in ...

2019-10-10  typical narrow vein dilution costs of $25/tonne; mining direct operating costs (mucking and trucking $7/tonne) and milling ($18/tonne), and assuming 500 000 tonnes per annum ore production, Figure 1 demonstrates how the cost of 25 cm of dilution increases as vein width decreases. Based on this simplified economic model, a mine with a 25 cm ...

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South Deep Gold Mine - GOLD FIELDS

South Deep Gold Mine. Technical Short Form Report. South Deep Gold Mine is an intermediate to deep level gold mine comprising two shaft systems that mine various auriferous conglomerates from open ground and pillars that occur at depths between 1,575 m and 3,500 m below surface.

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

The figures for Impala exclude the additional approximately 30% production from toll treatment. ** The figures given for rhodium production at Stillwater and Noril’sk are the author’s estimates. *** Hartley started smelting in early 1997, and has not yet reached full capacity of 0.15 Moz/a Pt, 0.11 Moz/a Pd, 0.012 Moz/a Rh; i.e. Pt+Pd+Rh = 0.27 Moz/a.

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Types of Mining Methods Sell Side Handbook

2018-3-11  This method is popular for mining thin reef deposits such as gold reef conglomerates that are hard to mine. Longwall mining accounts for over 90% of Australia’s underground coal production. While many mining companies have

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