mine planning for narrow gold reefs

PDF A review of optimal planning of level and raise

Nov 02 2011· Underground mining Underground mining methods Lecture 4 Underground Mining 1 Hassan Z Harraz hharraz2006 yahoo com 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

Planning for the future Performance Integrated report

Nov 01 2016· Underground face sampling on narrow gold reefs Sampling practice and its impact on the mine call factor on Witwatersrand gold mines lessons learned Journal of the Institute of Mine …

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Jan 01 2017· Reflections on Narrow-Reef Platinum Mining Pillar Design Sys Using Short Deflections in Evaluating a Narrow Tabular UG2 R 3D Geological Modelling and Resource Estimation for a Gold D Characterizing a Mining Production System for Decision-Makin A Mining Perspective on the Potential of Renewable Electrici

TWENTY FIVE YEARS OF MECHANISATION OF TABULAR …

Gold Reef City Only remaining gold mine in the Johannesburg area that has an operational shaft shaft 14 crown mines tourists only not an operational mine One of hundreds of original shafts along the east west arc of gold bearing rock south of Johannesburg At this historical gold mine we do take an underground tour to the upper level

Reflections on Narrow-Reef Platinum Mining Pillar Design

RESOURCES AND RESERVES BY OPERATION SOUTH AFRICA FREE STATE CONTINUED Mining methods and mine planning The stoping methods can be grouped into long-hole stoping and development mining techniques as follows Long-hole stoping methods Massive open Narrow-reef conventional Wide open Development methods Drift and fill Cut and fill

Hartebeestfontein Gold Mine Near Klerksdorp South Africa

Gold Reef City gives you an incredible variety of fun things to do in Johannesburg all in one exciting destination Come and play relax and enjoy world-class entertainment with us Living and breathing 24 hours a day Gold Reef City has something for everyone Our casino complex is constantly alive with excitement and energy

Saimm 201611 nov by SAIMM -

Gold Reef City is an amusement park in Johannesburg South Africa Located on an old gold mine which closed in 1971 the park is themed around the gold rush that started in 1886 on the Witwatersrand the buildings on the park are designed to mimic the same period

Variations in ultra-deep narrow reef stoping

Underground face sampling on narrow gold reefs Sampling practice and its impact on the Mine Call Factor on Witwatersrand gold mines Lessons learned The analysis of the mine call factor in

Can South Africa Implement Mechanized Mining Methods

The challenge in gold mining is that the rock is even harder than PGM-bearing rock and rock stress is very high given depths of more than 4 km it states 24 7 mechanised mining systems would allow the exploitation of lower-grade reefs as well as deep high-grade reefs and high-grade pillar recovery

Optimization of blasting in narrow reef mines in South

PAGE 4 CHAMBER OF MINES DRILLING AND BLASTING IN HARD ROCK NARROW TABULAR MINES INTERACTIONS AND LESSONS FROM MINES VISITS TO MINE TRAINING CENTRES Visits were conducted to two large mining companies one gold and one platinum to assess the quality and comprehensiveness of training in marking drilling charging and blasting In both cases

Mine call factor issues from a surface - EE Publishers

A review of optimal planning of level and raise spacing in inclined narrow reefs Article PDF Available in Journal- South African Institute of Mining and Metallurgy 110 8 415-423 · August 2010

Age of the machines - MIning Decisions

Nov 21 2018· An ultra high grade gold vein found in a heavily mineralized outcrop Solid mineral vein panned out to reveal high grade gold platinum palladium silver and other minerals Vein contains

MVM1100 Narrow Vein Mining - YouTube

Narrow-reef precious metals mining at a crossroads

Can South Africa Implement Mechanized Mining Methods Successfully with the responsibility to develop ways of mechanizing the narrow-reef hard-rock gold mines In 1996 Pickering started his own consultancy and a couple of years later began a long — and still continuing — association with Mining Construction his brief being

Mining by rock cutting in narrow reefs - SAIMM

TWENTY FIVE YEARS OF MECHANISATION OF TABULAR OREBODIES IN SOUTH AFRICAN GOLD AND PLATINUM MINES K A RHODES OCTOBER 2015 The Background to the Start of Mechanised Mining of Tabular Reefs on the Gold Mines of Johannesburg Consolidated Investment Company 21 Twenty Five Years of Mechanisation of Tabular Orebodies in South

Geological factors influencing the design of a narrow-reef

Application of 3-D seismics to mine planning at Vaal Reefs gold mine number 10 shaft Republic of South Africa horizontal components Learn More A review of the sequential grid mining method employed at The Ventersdorp Contact Reef is a gold consisted of a series of slopes and horizontal Elandsrand is therefore classified as a

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equipment selection for a narrow reef gold mine Gold Mine Information Majors Creek Dargues Reef part of the 659 km2 Majors Creek Gold Project situated approximately 60km southwest of Canberra just north of the village of Majors Creek Unity holds of the project since …

Gold Reef City Theme Park Attractions in Johannesburg

Dec 18 2019· The Cosmo mine and Union Reefs mill were placed on care and maintenance in 2017 Current Northern Territory reserves total 666 000 tonnes grading 5 g t gold for a total of 107 000 oz

Narrow-reef precious metals mining at a crossroads

Quartz reef mining played an important role in 19th century gold-mining districts such as Bendigo Victoria Central Otago in New Zealand and the California mother lode In at least the shallow oxidized zones of quartz reef deposits the gold occurs in its metallic state and is …

blasting designs in narrow gold reef mines pdf

Robot miner for low grade narrow tabular ore bodies the potential and the challenge mine planning African narrow reef mining and th e robotic s arena However it

RESOURCES AND RESERVES BY OPERATION SOUTH …

Mining Engineering Synopsis Gold bearing deposits of the Witwatersrand basin are generally less than 2m thick and require conventional narrow-reef mining methods for extraction and employ explosives as a means of rock breaking Optimal utilization of explosives is dependent on the overall design

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MINING BY ROCK CUTTING IN NARROW REEFS 221 Introduction The hard rock gold and platinum mines in South Africa have seen little development in the technology of mining Holes are still drilled in the rock - though the latest water hydraulic rockdrills will complete that task in two minutes compared with the eight hours for hammer hand drilling at

Jeanette gold mine - the future - Taung Gold International

Gold grades Based on the results of Taung Gold s own drilling and geophysical exploration efforts and combined with that of previous owners of the Jeanette property Taung has applied for a consolidation of our neighbouring properties with Jeanette such that a large scale coherent mine …

Time Dependent Failure of Open Stopes at Target Mine

Now as chairperson of the Centre for Mechanised Mining Systems steering committee Pickering s message is crystal clear South Africa s narrow-reef mining has to move to the next level or

Ultra High Grade Gold Vein In A Heavily Mineralized

The theory of mine call factor MCF compares the sum of metal produced in recovery plus residue to the metal called for by the mines evaluation methods expressed as a percentage The concept is well known in underground mining scenarios and therefore this article highlights some MCF issues from a surface mine perspective using …

to mine horizontal gold reefs

Planning for the future The key component of the new mining method under development is the use of mechanical boring techniques targeting the gold reefs alone thereby minimising dilution while reducing or even eliminating seismicity risks Preparations for rehabilitation and closure are integral to mine planning and development and

Gold Project Inventory - Gold in Ironstone and Quartz Reef

Figure 3 Photo showing the Eldorado reefs sub-outcropping against the Dreyerskuil reefs Le Roux 2015 Figure 4 Plan view of Target mining block Le Roux 2015 Open stoping is the process by which massive stopes are blasted to mine selected reef packages within the orebody

Gold Mine tours Johannesburg - 130 years of Johannesburg s

13 · 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 These new narrow reef machines use lithium-ion batteries which can achieve up to 2 000 charging cycles

PDF Robot miner for low grade narrow tabular ore bodies

Geological factors influencing the design of a narrow-reef autonomous gold miner Dr George Henry and Dr Jan Kuijpers Centre for Mining Innovation CMI

Drill-Hole Planning Geology for Investors

ABERCROMBIE This reef is 7 4 kilometres north of Dalmorton near the junction of Dinner and Abercrombie Creeks The main reef was first prospected in 1872 and in 1873 a shaft was sunk to 13 1 metres at which depth it was reported the quartz was richer in gold and was 1 0 metre in width