narrow reef mining production figures

Narrow reef mechanized mining layout at Anglo American Platinum

narrow reef mining layout as well as the design principles that are being ... Currently proof–of-concept and production trials are being conducted to prove .... Figure 3. On-reef mechanized layout. Figure 4. ULP mining cycle. • Ledging. • Stoping...

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narrow vein and low profile mining - The Mancala Group

production rates resulting in considerable time saving compared to .... and a reduction in the number of tonnes. .... South Africa''s narrow reef underground mines.

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Musingwini 159-164

underground mine production systems, Kazakidis and. Scoble (2003) noted that .... production in longhole stoping operations of narrow reefs. In an article on the...

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Beatrix Gold Mine - Gold Fields

At Beatrix 3 Shaft, mining is typically done on reef types associated with a transition ... faults divide the reef into a discontinuous set of narrow north-trending blocks. .... A general increase in production volumes at 4 Shaft from the current base of...

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Mining technology – trends and development - pratclif.com

Mar 29, 2012 ... 8,300 iron ore mines (and this after the closure of a number of small ... these (less than 1 Mt/y of ore production) are small in global terms. .... Particularly in narrow vein and reef mining, where more selective methods will...

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Costerfield Narrow Vein Case Study (AusIMM 2016 Mine ...

... a narrow-vein case study. Over the last six years, Mandalay Resources has increased production rates and improved ... The Costerfield mine is an underground operation utilising narrow-mining techniques to ... Even with a decreasing antimony price since the boom (as shown in Figure 1), Costerfield has ... Reefs are ''en.

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techno-economic optimisation of level and raise ... - WIReDSpace

Sep 24, 2007 ... 70% of the platinum production from the Bushveld Complex is extracted using conventional ... By using real geological data on ..... CURRENT LEVEL AND RAISE SPACING PRACTICES NARROW REEF TABULAR MINES.

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Chris Griffith''s speech from Mining Indaba 2015 - Anglo American

Chris Griffith, CEO Anglo American Platinum, Mining Indaba 2015 Speech ... Ill-disciplined mining production – resulting in oversupply of certain ... Our modernisation strategy has a number of elements. ... narrow reef, conventional mining.

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Underground mining | DOK-ING, robotic mine clearance and ...

A number of world renowned commercial companies as well as the small and medium ... The introduction of extra low profile equipment in narrow reef (1,2 m) stoping ... Creating a safe mining environment for efficient production is an absolute...

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Platinum-Group Metals—World Supply and Demand US Geological ...

Graphs showing primary platinum-group metal production data from 1987 to .... Examples include the Merensky Reef of the Bushveld Complex in South .... Most South African PGM mining is by underground methods because the narrow ore.

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Platinum smelting in South Africa - MINTEK

PGM production figures for individual producers in 1998 (Moz/yr). Pt. Primary producers of ... group metals are concentrated in narrow but extensive strata known as the Merensky Reef, the Platreef, and the UG2 chromitite layer. These three ... There are currently twelve active or planned platinum mines in the Bushveld...

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Production - South Africa - PMM

Traditionally, both reefs were mined using narrow reef methods, and many ... The refined pgm have a purity of over 99.95 per cent, and can be produced in a number ... The time between mining of the ore and production of pure metal typically...

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Optimization of blasting in narrow reef mines in South Africa

Figure 3. Gold and platinum mining areas in South Africa. They are exploited through deep shafts and tunnels cut at the ... mine narrow reefs, having a seam height of the order of 1 m at ..... rock profile and the concussion produced were both.

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P30_van den Berg:text - Metals Conferences

Figure 1. Conventional stoping and development productivity in a large platinum mine over .... mining. An estimated 60% of current world platinum production originates ... with a narrow-reef mining machine prototype (disc cutter). These tests...

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Mechanized Mining of the West Reef Resource, - SEC.gov

Figure 4-1: Historic Prestea Underground Mine Production .... The West Reef mineral resource consists of a steeply dipping, narrow vein structure between 17L...

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A handbook on Rock Engineering Practice for tabular ... - SANIRE

Figure 3.3.5 Example of a chart for assisting in design of bracket pillar width. A ''tolerable'' ... in principle, to the use of concrete in place of other regional reef pillars, such as those used in ... the edge of the concrete pillar (for example, by the placing of a relatively narrow ... mensurate with the decrease in mining production.

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The Environmental Costs of Platinum-PGM Mining - User Web Pages

production statistics and environmental or ''sustainability metrics'' are then .... Merensky and UG2 reefs (~1 m), mining typically requires narrow techniques (eg.

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sa region technology innovation presentation january 2014 disclaimer

Jan 31, 2014 ... o Vaal River (VR), Mine Waste Solutions (MWS) & West Wits (WW) ... **Gold produced from underground ore is allocated to respective ... gold endowment remains underground at varying depths and reef thickness. • Gold found in fairly consistent, narrow, high-grade tabular ore ... Navachab listed for sale.

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The World''s 10 Most Prolific Gold Fields | CMI Gold and Silver

Mar 31, 2011 ... Imagine gold mining shafts nearly two and a half miles below the ... By 2009, South Africa''s share of world gold production had dropped to less than 8%. ..... with the gold bearing reef so narrow that workers manoeuvred in .... Yes, China is, according to available statistics, the largest gold producing country.

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

The location of this reef is unknown, however a company was floated to mine the reef in 1896. ... This reef is one of a number of reefs operated during 1872 to 1873 on the .... The reef i s narrow (about 6.5 centimetres) but produced high values.

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Google Answers: Deep Reef Mine Automation

Q: Deep Reef Mine Automation ( Answered 4 out of 5 stars .... best use of the production data that is generated to smooth production flow. .... PHM was developed to drill long roof-bolt holes in narrow stopes in one operation.

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Data & Analysis | Nevada Mining Association

Welcome to the Nevada Mining Association data portal. This page provides useful data and ... STATE OF NEVADA MINING PRODUCTION. Hover Here to See...

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Narrow-reef mechanized mining layout at Anglo American ... - SAIMM

equipment has completed its production trial and the ULP equipment is entering its ... Narrow-reef mechanized mining layout at Anglo American Platinum. Objectives of the ... Figure 2(Applic/tion of the on reef pre development l/yout /t different.

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Final Research project for submission external exm reviewx - Core

Dilution makes the XLP and LP mining unsuitable for mining narrow tabular ore bodies due to the amount of ...... Figure 3.1: Production, reef width and dilution.

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what is the best energy delivery system for hand-held ... - CiteSeerX

of industry experts and professionals, such as production and operation managers, consultants, suppliers ... associated equipment in narrow-reef hard rock mines. This is .... Figure 1 Electric drilling and equipping within the conventional panel.

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Top 10 Technologies: The Ones to Watch - Schlumberger

May 2, 2015 ... 2 Hard-rock cutting for production ... Header and the numbers refer to the machine''s 3m x 5m ... narrow-reef platinum mining, but also keeping...

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Brewster, A Brief History of Mining in Utah - UtahRails.net

Iron ore, the commercial production of which had its first appreciable impetus in 1924, .... The combined copper output of both districts probably totals about 10 tons of metal; .... The most productive mines in the Silver Reef District were the Barbee ..... The narrow-gauge railroad, ultimately 65 miles long, was built from Mack,...

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The environmental costs of platinum–PGM mining and ... - WikiRate

Feb 4, 2010 ... tween production statistics and sustainability metrics are then investigated .... thin nature of the Merensky and UG2 reefs ($1 m) requires narrow.

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mining - Underground mining | Britannica.com

For steeply dipping ore bodies, such as the one illustrated in the figure, this means ... Prior to the production of ore, a certain capital investment in mine .... In small, narrow vein deposits, tracked or rubber-tired overshot loaders are often employed. .... In hard rocks, such as the gold- and platinum-bearing reefs of South Africa,...

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drilling and blasting in hard rock narrow tabular mines - MOSH

curve in Figure 1 shows the expected contribution that good drilling and ... The quality of marking, drilling, charging and blasting affects the mining cycle .... Marking of the face, which includes positions to drill the shot holes, top and bottom reef contacts, .... A number of interviews were conducted with underground production...

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Mine call factor issues from a surface mine perspective - EE Publishers

Aug 11, 2014 ... The theory of mine call factor (MCF) compares the sum of metal produced in recovery .... For instance in South Africa, a study on sampling narrow reefs has ... A spotter counts the number of trucks for each mining block at the...

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Mining by rock cutting in narrow reefs

mining the narrow reef, hard rock, typical of South African gold and platinum mines. ... the ARM 1100 as a mining production tool. .... Figure 1. Theoretical rock breaking process for conventional disc cutting and disc orientation for undercutting...

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South Africa: Existing gold and platinum mines will close, says Andy ...

Oct 31, 2013 ... The main platinum reefs, the Merensky and the UG2, are both well ... below surface, crouching in narrow stopes, with a jackhammer drill, ... That''s what they''re doing now – closing certain mines or reducing the number of operating shafts.” ... Andy says there is reason to be optimistic for platinum production.

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Underground Mining for Meeting Environmental ... - Science Direct

greater stress on surface mining for boosting the production in our country, which has a larger environmental footprint compared ... Due to the sharp rise in prices and demand of a number of mineral .... rig capable of operating in a ''narrow reef''.

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Labour strife drives mines mechanisation | Fin24

Oct 14, 2014 ... For decades, SA''s platinum production has rested on men risking their ... View company snapshot for more news and data .... the platinum reef is generally too narrow, or at too steep a gradient, for machines to easily access.

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Narrow reef mechanized mining layout at Anglo American Platinum

narrow reef mining layout as well as the design principles that are being ... Currently proof–of-concept and production trials are being conducted to prove .... Figure 3. On-reef mechanized layout. Figure 4. ULP mining cycle. • Ledging. • Stoping...

Get Price

narrow vein and low profile mining - The Mancala Group

production rates resulting in considerable time saving compared to .... and a reduction in the number of tonnes. .... South Africa''s narrow reef underground mines.

Get Price

Musingwini 159-164

underground mine production systems, Kazakidis and. Scoble (2003) noted that .... production in longhole stoping operations of narrow reefs. In an article on the...

Get Price

Beatrix Gold Mine - Gold Fields

At Beatrix 3 Shaft, mining is typically done on reef types associated with a transition ... faults divide the reef into a discontinuous set of narrow north-trending blocks. .... A general increase in production volumes at 4 Shaft from the current base of...

Get Price

Mining technology – trends and development - pratclif

Mar 29, 2012 ... 8,300 iron ore mines (and this after the closure of a number of small ... these (less than 1 Mt/y of ore production) are small in global terms. .... Particularly in narrow vein and reef mining, where more selective methods will...

Get Price

Costerfield Narrow Vein Case Study (AusIMM 2016 Mine ...

... a narrow-vein case study. Over the last six years, Mandalay Resources has increased production rates and improved ... The Costerfield mine is an underground operation utilising narrow-mining techniques to ... Even with a decreasing antimony price since the boom (as shown in Figure 1), Costerfield has ... Reefs are ''en.

Get Price

techno-economic optimisation of level and raise ... - WIReDSpace

Sep 24, 2007 ... 70% of the platinum production from the Bushveld Complex is extracted using conventional ... By using real geological data on ..... CURRENT LEVEL AND RAISE SPACING PRACTICES NARROW REEF TABULAR MINES.

Get Price

Chris Griffith''s speech from Mining Indaba 2015 - Anglo American

Chris Griffith, CEO Anglo American Platinum, Mining Indaba 2015 Speech ... Ill-disciplined mining production – resulting in oversupply of certain ... Our modernisation strategy has a number of elements. ... narrow reef, conventional mining.

Get Price

Underground mining | DOK-ING, robotic mine clearance and ...

A number of world renowned commercial companies as well as the small and medium ... The introduction of extra low profile equipment in narrow reef (1,2 m) stoping ... Creating a safe mining environment for efficient production is an absolute...

Get Price

Platinum-Group Metals—World Supply and Demand US Geological ...

Graphs showing primary platinum-group metal production data from 1987 to .... Examples include the Merensky Reef of the Bushveld Complex in South .... Most South African PGM mining is by underground methods because the narrow ore.

Get Price

Platinum smelting in South Africa - MINTEK

PGM production figures for individual producers in 1998 (Moz/yr). Pt. Primary producers of ... group metals are concentrated in narrow but extensive strata known as the Merensky Reef, the Platreef, and the UG2 chromitite layer. These three ... There are currently twelve active or planned platinum mines in the Bushveld...

Get Price

Production - South Africa - PMM

Traditionally, both reefs were mined using narrow reef methods, and many ... The refined pgm have a purity of over 99.95 per cent, and can be produced in a number ... The time between mining of the ore and production of pure metal typically...

Get Price

Optimization of blasting in narrow reef mines in South Africa

Figure 3. Gold and platinum mining areas in South Africa. They are exploited through deep shafts and tunnels cut at the ... mine narrow reefs, having a seam height of the order of 1 m at ..... rock profile and the concussion produced were both.

Get Price

P30_van den Berg:text - Metals Conferences

Figure 1. Conventional stoping and development productivity in a large platinum mine over .... mining. An estimated 60% of current world platinum production originates ... with a narrow-reef mining machine prototype (disc cutter). These tests...

Get Price

Mechanized Mining of the West Reef Resource, - SEC.gov

Figure 4-1: Historic Prestea Underground Mine Production .... The West Reef mineral resource consists of a steeply dipping, narrow vein structure between 17L...

Get Price

A handbook on Rock Engineering Practice for tabular ... - SANIRE

Figure 3.3.5 Example of a chart for assisting in design of bracket pillar width. A ''tolerable'' ... in principle, to the use of concrete in place of other regional reef pillars, such as those used in ... the edge of the concrete pillar (for example, by the placing of a relatively narrow ... mensurate with the decrease in mining production.

Get Price

The Environmental Costs of Platinum-PGM Mining - User Web Pages

production statistics and environmental or ''sustainability metrics'' are then .... Merensky and UG2 reefs (~1 m), mining typically requires narrow techniques (eg.

Get Price

sa region technology innovation presentation january 2014 disclaimer

Jan 31, 2014 ... o Vaal River (VR), Mine Waste Solutions (MWS) & West Wits (WW) ... **Gold produced from underground ore is allocated to respective ... gold endowment remains underground at varying depths and reef thickness. • Gold found in fairly consistent, narrow, high-grade tabular ore ... Navachab listed for sale.

Get Price

The World''s 10 Most Prolific Gold Fields | CMI Gold and Silver

Mar 31, 2011 ... Imagine gold mining shafts nearly two and a half miles below the ... By 2009, South Africa''s share of world gold production had dropped to less than 8%. ..... with the gold bearing reef so narrow that workers manoeuvred in .... Yes, China is, according to available statistics, the largest gold producing country.

Get Price

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

The location of this reef is unknown, however a company was floated to mine the reef in 1896. ... This reef is one of a number of reefs operated during 1872 to 1873 on the .... The reef i s narrow (about 6.5 centimetres) but produced high values.

Get Price

Google Answers: Deep Reef Mine Automation

Q: Deep Reef Mine Automation ( Answered 4 out of 5 stars .... best use of the production data that is generated to smooth production flow. .... PHM was developed to drill long roof-bolt holes in narrow stopes in one operation.

Get Price

Data & Analysis | Nevada Mining Association

Welcome to the Nevada Mining Association data portal. This page provides useful data and ... STATE OF NEVADA MINING PRODUCTION. Hover Here to See...

Get Price

Narrow-reef mechanized mining layout at Anglo American ... - SAIMM

equipment has completed its production trial and the ULP equipment is entering its ... Narrow-reef mechanized mining layout at Anglo American Platinum. Objectives of the ... Figure 2(Applic/tion of the on reef pre development l/yout /t different.

Get Price

Final Research project for submission external exm reviewx - Core

Dilution makes the XLP and LP mining unsuitable for mining narrow tabular ore bodies due to the amount of ...... Figure 3.1: Production, reef width and dilution.

Get Price

what is the best energy delivery system for hand-held ... - CiteSeerX

of industry experts and professionals, such as production and operation managers, consultants, suppliers ... associated equipment in narrow-reef hard rock mines. This is .... Figure 1 Electric drilling and equipping within the conventional panel.

Get Price

Top 10 Technologies: The Ones to Watch - Schlumberger

May 2, 2015 ... 2 Hard-rock cutting for production ... Header and the numbers refer to the machine''s 3m x 5m ... narrow-reef platinum mining, but also keeping...

Get Price

Brewster, A Brief History of Mining in Utah - UtahRails

Iron ore, the commercial production of which had its first appreciable impetus in 1924, .... The combined copper output of both districts probably totals about 10 tons of metal; .... The most productive mines in the Silver Reef District were the Barbee ..... The narrow-gauge railroad, ultimately 65 miles long, was built from Mack,...

Get Price

The environmental costs of platinum–PGM mining and ... - WikiRate

Feb 4, 2010 ... tween production statistics and sustainability metrics are then investigated .... thin nature of the Merensky and UG2 reefs ($1 m) requires narrow.

Get Price

mining - Underground mining | Britannica

For steeply dipping ore bodies, such as the one illustrated in the figure, this means ... Prior to the production of ore, a certain capital investment in mine .... In small, narrow vein deposits, tracked or rubber-tired overshot loaders are often employed. .... In hard rocks, such as the gold- and platinum-bearing reefs of South Africa,...

Get Price

drilling and blasting in hard rock narrow tabular mines - MOSH

curve in Figure 1 shows the expected contribution that good drilling and ... The quality of marking, drilling, charging and blasting affects the mining cycle .... Marking of the face, which includes positions to drill the shot holes, top and bottom reef contacts, .... A number of interviews were conducted with underground production...

Get Price

Mine call factor issues from a surface mine perspective - EE Publishers

Aug 11, 2014 ... The theory of mine call factor (MCF) compares the sum of metal produced in recovery .... For instance in South Africa, a study on sampling narrow reefs has ... A spotter counts the number of trucks for each mining block at the...

Get Price

Mining by rock cutting in narrow reefs

mining the narrow reef, hard rock, typical of South African gold and platinum mines. ... the ARM 1100 as a mining production tool. .... Figure 1. Theoretical rock breaking process for conventional disc cutting and disc orientation for undercutting...

Get Price

South Africa: Existing gold and platinum mines will close, says Andy ...

Oct 31, 2013 ... The main platinum reefs, the Merensky and the UG2, are both well ... below surface, crouching in narrow stopes, with a jackhammer drill, ... That''s what they''re doing now – closing certain mines or reducing the number of operating shafts.” ... Andy says there is reason to be optimistic for platinum production.

Get Price

Underground Mining for Meeting Environmental ... - Science Direct

greater stress on surface mining for boosting the production in our country, which has a larger environmental footprint compared ... Due to the sharp rise in prices and demand of a number of mineral .... rig capable of operating in a ''narrow reef''.

Get Price

Labour strife drives mines mechanisation | Fin24

Oct 14, 2014 ... For decades, SA''s platinum production has rested on men risking their ... View company snapshot for more news and data .... the platinum reef is generally too narrow, or at too steep a gradient, for machines to easily access.

Get Price