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narrow reef mining production figures

narrow reef mining production figures -

Mining by rock cutting in narrow reefs. A narrow reef mining machine the ARM 1100 as a mining production tool. Background Voest Alpine Bergtechnik is an Austrian Company based in Examples are in Figures 2 and 3. However, discussion has identified two high-risk elements, either of which could cause failure of theget price

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narrow reef mining production figures

mining reefs (c03w, c38, c39 and c05e) are shown in red. horizontal level access tunnels (drives) are spaced at 20 metre vertical intervals in each reef. the c39 reef dips east and strikes north south, and shows edge on as a narrow strip in this view. vmu stands

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Mining by rock cutting in narrow reefs - 911metallurgist

MINING BY ROCK CUTTING IN NARROW REEFS 223 • Narrow reef miner design.Sandvik Tamrock and Voest Alpine would design the prototype narrow reef miner entirely at their cost. They would own the intellectual property arising from the design of the prototype. • Narrow reef

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

the mining of narrow reefs at depth. Dip pillars are left behind in the reef horizon defining spans between which stoping takes place under-hand in a carefully sequenced manner. This method is shown in Figure 4. The pillars are about 35 m wide, the crosscuts are developed at 200 m intervals resulting in spans of about 165 m depending on the mining depth.

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v117n3a8 Narrow-reef mechanized mining layout at Anglo ...

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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A hard rock narrow reef mining machine—ARM 1100

A HARD ROCK NARROW REEF MINING MACHINE—ARM 1100 209 Additional features of the narrow reef miner This generalized specification was fleshed out and the reef miner conceived is shown in Figure 3 and has the following main advantages: • The machine design was simple in concept and made use of tried and tested components

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A systematic approach to the optimization of extra low ...

Figure 3 clearly shows that the NOPAT associated with XLP mining is far higher than standard LP mechanized mining methods and conventional mining methods respectively over the life of mine duration. Figure 1. XLP roof bolting within a 1.2 m stoping width Figure 2. Historical platinum price trends from 2005–20091.

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(PDF) Narrow-reef mechanized mining layout at

Narrow-reef mechanized mining lay out at Anglo American Platinum The results thus far achieved from the XLP production trial clearly demonstrate that higher production levels (>4000

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Narrow Reef Mechanized Mining Simulation in

13-03-2015  Video illustrating the breast mining process in a narrow reef using unmanned Ultra Low Profile (ULP) Electrical equipment. The model can determine the sectio...

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Modern Mining Underground Anglo American

2. MM 220 Reef Miners. Also in development with SANDVIK is another remotely operated rig, the MN 220 Reef Miner. This incorporates cutting and roof bolting and is designed for mining narrow mineral reefs in hard rock. It is up to three times faster than conventional drill blast methods and, of course, also removes our people from harm’s way.

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A systematic approach to the optimization of extra low ...

A systematic approach to the optimization of extra low profile (XLP) mine productivity for narrow reef platinum mines. The 4th International Platinum Conference, Platinum in transition ‘Boom or Bust’, The Southern African Institute of Mining and Metallurgy, 2010.

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Optimization of blasting in narrow reef mines in South Africa

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

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(PDF) A progress report on ultra-high-pressure

Once the efficient use of waterjets in stopes has been implemented on a routine basis and at an industrial scale, a new era of narrow-reef mining can begin.Figure 1b -Figure 2 -1b2'Pro cutting' head by KMT Ltd. (for permanent working pressure of 3.5 kbar and max. 6.2 kbar pressure (KTM, 2007), and outline and crosssection of a typical waterjet nozzle (WARDjet) Ferrosilicon spheres (left ...

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Electric narrow reef XLP mining coming to Anglo

Electric narrow reef XLP mining coming to Anglo Platinum’s Tumela 15E Posted by Paul Moore on 19th February 2020 Another highlight of Anglo American Platinum’s just released 2019 report was the revelation that electric narrow reef mechanised equipment is set for trials at its Tumela 15E underground platinum mine, part of the Amandelbult Complex in Limpopo province.

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(PDF) Loading and hauling of broken rock in a

All figure content in this area was uploaded by Steven Michael Rupprecht. ... in the narrow reef environment. ... gained underground production mining experience working at

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Evaluating the Viability of Pumpable Emulsion Explosives ...

Narrow Reef Mining Operations” is my own work, ... List of Figures ... Table 5, Loss of Production due to explosives related section 54s ..... 64 Table 6, Requirements of the New Narrow Reef Emulsion Formulation ..... 68 Table 7, Calculation of Blasting Expenses –Stoping ...

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Other Key Projects - Theta Gold Mines

Other Significant Mines Northern Tenements – Pilgrim’s Rest Gold Field. Figure1: Northern Tenements. Vaalhoek Mine (Open cut) Vaalhoek resource (0.62Mt @ 17.5g/t Au for 335koz, 82% Inferred), 20km north of the TGME Plant (Figure 1), represents mostly flat-lying reefs, are amenable to open-cut mining and is an example of the type of high-grade targets the Company is seeking to bring into ...

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Figure 4 from A progress report on ultra-high

Figure 4Photograph of the experimental set-up of the sample in the cutting frame with various waterjets and nozzles at the Bad Nauheim plant of KMT Ltd in Germany - "A progress report on ultra-high-pressure waterjet cutting underground: the future of narrow reef gold and PGE mining"

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Figure 10 from A progress report on ultra-high

Figure 10Schematic waterjet cutting set-up envisaged for a typical South African gold or platinum mine reef situation (dimensions are approximate) in combination with drilling and blasting development - "A progress report on ultra-high-pressure waterjet cutting underground: the future of narrow reef gold and PGE mining"

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Lecture 4: Underground Mining - SlideShare

02-11-2011  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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TWENTY FIVE YEARS OF MECHANISATION OF TABULAR

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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Other Key Projects - Theta Gold Mines

Other Significant Mines Northern Tenements – Pilgrim’s Rest Gold Field. Figure1: Northern Tenements. Vaalhoek Mine (Open cut) Vaalhoek resource (0.62Mt @ 17.5g/t Au for 335koz, 82% Inferred), 20km north of the TGME Plant (Figure 1), represents mostly flat-lying reefs, are amenable to open-cut mining and is an example of the type of high-grade targets the Company is seeking to bring into ...

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THE DESIGN AND BEHAVIOUR OF CRUSH PILLARS ON THE MERENSKY REEF

2 – 4 m wide. Inter-pillar spans vary between 20 – 35 m. An off-reef haulage links to the reef horizon via a cross-cut and travelling way. Figure 1.2: Example of an in-stope pillar layout (plan view) for narrow tabular reef mining. The diagram indicates a down-dip split-panel layout as used in the trial mining section on Lonmin

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Modern Mining Underground Anglo American

2. MM 220 Reef Miners. Also in development with SANDVIK is another remotely operated rig, the MN 220 Reef Miner. This incorporates cutting and roof bolting and is designed for mining narrow mineral reefs in hard rock. It is up to three times faster than conventional drill blast methods and, of course, also removes our people from harm’s way.

More

Major Mines Projects - Mining Intelligence and

Mining of Ore Reserves in the Main Dome open pit was completed in the fourth quarter of FY20. Further studies are currently evaluating potential for additional Ore Reserves in Main Dome open pit. The Telfer Underground comprises the sub level cave mine and selective high-grade reef mining and Western Flanks reef and stockwork mining.

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Lecture 4: Underground Mining - SlideShare

02-11-2011  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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Figure 4 from A progress report on ultra-high

Figure 4Photograph of the experimental set-up of the sample in the cutting frame with various waterjets and nozzles at the Bad Nauheim plant of KMT Ltd in Germany - "A progress report on ultra-high-pressure waterjet cutting underground: the future of narrow reef gold and PGE mining"

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Figure 10 from A progress report on ultra-high

Figure 10Schematic waterjet cutting set-up envisaged for a typical South African gold or platinum mine reef situation (dimensions are approximate) in combination with drilling and blasting development - "A progress report on ultra-high-pressure waterjet cutting underground: the future of narrow reef gold and PGE mining"

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Gold Project Inventory - Gold in Ironstone and

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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Modern Mining Underground Anglo American

2. MM 220 Reef Miners. Also in development with SANDVIK is another remotely operated rig, the MN 220 Reef Miner. This incorporates cutting and roof bolting and is designed for mining narrow mineral reefs in hard rock. It is up to three times faster than conventional drill blast methods and, of course, also removes our people from harm’s way.

More

High Grade Gold at Nuggetty Reef Mine No. of Pages: 8

High Grade Gold at Nuggetty Reef Mine High grade gold up to 48.4g/t Au in underground sampling at the Nuggetty Reef Mine, Maldon, in Victoria 92Shares on issue: metre long drive averages 4.8g/t Au in unmined reef and 4.1 g/t Au in the unmined walls Results include: 33 metres averaging 8.2g/t Au (roof of

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THE DESIGN AND BEHAVIOUR OF CRUSH PILLARS ON THE MERENSKY REEF

2 – 4 m wide. Inter-pillar spans vary between 20 – 35 m. An off-reef haulage links to the reef horizon via a cross-cut and travelling way. Figure 1.2: Example of an in-stope pillar layout (plan view) for narrow tabular reef mining. The diagram indicates a down-dip split-panel layout as used in the trial mining section on Lonmin

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Quantification of the impacts of rock mass quality on ...

narrow reef mine Omberai Mandingaisa Student Number: 699038 ... Figure 11: Rose diagram of the major joint sets as mapped in the current production area and the declines (Mandingaisa, 2018) ... Figure 45: Team 4 mining height Q3 2016 - Q1 2017 ...

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Major Mines Projects - Mining Intelligence and

Mining of Ore Reserves in the Main Dome open pit was completed in the fourth quarter of FY20. Further studies are currently evaluating potential for additional Ore Reserves in Main Dome open pit. The Telfer Underground comprises the sub level cave mine and selective high-grade reef mining and Western Flanks reef and stockwork mining.

More

Figure 10 from A progress report on ultra-high

Figure 10Schematic waterjet cutting set-up envisaged for a typical South African gold or platinum mine reef situation (dimensions are approximate) in combination with drilling and blasting development - "A progress report on ultra-high-pressure waterjet cutting underground: the future of narrow reef gold and PGE mining"

More

Geology of the PGE Deposits in the Bushveld

01-03-2021  The sulphides scavenged PGE from the magma and concentrated them in distinct narrow reefs (seams or layers) (Fig. 4). Later hydrothermal redistribution of PGE, which further concentrated the PGE into the deposits we see today. Figure 4. Chromitite reefs (seams) in the Bushveld Igneous Complex, exposed at Dwars Rivier.

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Gold Project Inventory - Gold in Ironstone and

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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The Platinum Group Element Deposits of the

Mining companies may only publish ‘reserves’ and ‘resources’ of platinum. However, as discussed below (see box) (), this figure represents only what has been rigorously quantified in the short- to medium-term mining plans of these companies, and excludes all the geologically known extensions of these deposits for which an in-depth (and expensive) evaluation is not justified.

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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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