Products

Products

Ore dilution control practised at Sindesar Khurd Mine of

The mining method used is longhole open stoping LHOS which is a comparatively economic method but requires Figure 2 Longitudinal section of the mine 5 Mining the slot is drilled by 115 165 mm holes and opened by the vertical crater retreat or drop raise technique Teleremote operating

View more

Endeavor Mining Cotdvour justdifferentevents nl

longitudinal retreat mining method – Grinding Mill China sublevel open stoping in south african gold mines endeavour mining cotdvour longitudinal retreat mining method what is the process of mining galena sublevel open stoping in south african gold mines

View more

Ventilation Requirements for Uranium Mines

The radiation in underground uranium mines and methods of ventilation and exposure control have been well described by Longitudinal retreat is typically

View more

Longitudinal Retreat Mining Method cz eu eu

longitudinal retreat mining method longitudinal retreat mining method Eagle Mine215 Кб This method provides the cost advantages of bulk mining Get Price And Support Online Eagle Mine Lundin Mining Mine facilities and method The orebody is accessed from surface by decline mined

View more

Seismically Active Mines Geotechnical mining consulting based in

This includes assessing current and alternative mining methods mine designs support Recovery Seismicity Summed Total Cut and Fill 5 5 2 4 2 5 23 Room and Pillar 4 4 2 5 4 5 24 Airleg Slot Rising 5 5 2 4 4 4 24 Uphole Retreat 3 4 4 Some orebodies and mining methods eg longitudinal sub level

View more

Agnico Eagle Mines Limited Operations Development

The mining methods are longitudinal retreat with paste backfill and transverse open stoping with paste or unconsolidated backfill All of the ore is trucked to the surface before being trucked to the LZ5 ore processing plant In its first year of operation the mine

View more

Effect of stope construction parameters on ore dilution in

thesis is a case study of the Lapa Mine of Agnico Eagle Mines Limited a gold mining operation situated in the Abitibi region of Quebec The Lapa orebody is a narrow vein steeply dipping deposit with varying width and is extracted with longitudinal retreat mining method

View more

Longitudinal Retreat Mining Method alanglover

The longhole retreat mining method was selected for the narrow orebody extraction The reasons being related to economic vein mining method The method used at David Bell mine is the Alimak mining method However for narrower veins the longitudinal

View more

methods of mining of gold in obuasi Mine Equipments

Mining Method Transverse longitudinal open stoping longitudinal Gold mining at Obuasi in Ghana dates back to over a century and remains one of Pty Ltd provide a rock of a bottom up longitudinal retreat open stoping method for Obuasi Mine in Ghana Gold mineralisation within the Obuasi area has a proven continuous lateral

View more

Factors Influencing Overbreak in Narrow Vein Longitudinal

Due to the nature of the longitudinal retreat mining method employed at Lapa mine 3 Numerical Model setup In order to both examine the effects of stope strike length and stope sequence it is necessary to provide a model geometry which can be used for all cases

View more

longitudinal retreat mining method

longitudinal retreat mining method longitudinal retreat mining method Eagle Mine215 Кб This method provides the cost advantages of bulk mining while maintaining a

View more

Design and Application of Sublevel Stoping Methods

This course refers to the generic mining method of sublevel stoping The most commonly used sublevel stoping mining methods are sublevel open stoping long hole open stoping or blasthole stoping and vertical crater retreat VCR Variations of this method include vein Alimak mining transverse stoping Avoca and longitudinal mining

View more

Home Canadian Mines Mining Methods This method consists in a variety of The broken ore is mucked out by drawpoints or by longitudinal retreat

View more

EFFECT OF DELAYED BACKFILL ON OPEN STOPE MINING

Figure 2 5 Longitudinal retreat open stoping Mining adjacent to backfill 9 The underground methods in use at Musselwhite are longitudinal retreat and or

View more

Sublevel Caving Technique Mining Economic Geology Scribd

An underground mining method used in large steeply dipping orebodies where the using longholes between levels often in a circular or fan pattern on retreat perpendicular to the strike Recovery better than longitudinal layouts Haulage

View more

mining for magnetic minerals miningbmw com

7 27 2012 nbsp 0183 32 Moma Titanium Minerals Mine Mining Technology The MSP uses magnetic gravity and electrostatic techniques to extract titanium minerals from the

View more

longitudinal retreat mining method chinese for eu eu

vertical crater retreat mining method Description Vrm Vertical Crater Retreat longitudinal retreat mining method Mining Access to the Musselwhite mine is through a twin decline system Where mining widths are less than m longitudinal retreat methods are employed

View more

longitudinal retreat mining method apartmanlipno rent eu

Derryginagh Barite Project Ireland Sunrise Resources The mining methods suggested for the Derryginagh mineralisation are a combination of Alimak stoping and longitudinal retreat stoping with ore being hauled to surface via a decline located to the north of the deposit

View more

Longhole Welcome to the Narrow Vein Mining

Home gt Canadian Mines gt Mining Methods This method consists in a variety of chambers The broken ore is mucked out by drawpoints or by longitudinal retreat

View more

Denison Reports Results from Wheeler River PFS Including

Selection of ISR mining method for within the basement rocks of the Gryphon deposit have allowed for the application of conventional underground mining methods namely longitudinal retreat

View more

longwall mining advancing and retreating longwalls In this method As the face retreats

View more

The AusIMM Publications

Publications Papers The Obuasi Mine mechanised cut and fill longitudinal and transverse open stoping and lately longitudinal retreat mining method

View more

Narrow Vein Mining Conference 2012 Proceedings

The Obuasi Mine – Longitudinal Retreat Mining Method Application and Challenges F Nsarko and F Owusu Mensah 59 Challenges Faced by Narrow Vein Graphite Mining and Infl uence of Graphite Infi ll on Wall Stability H S Welideniya and K Ekanayake 71 Geology and Evaluation Review of the Advances Made in Geological

View more

Research Report on the Coal Pillar Recovery under Deep Cover

RESEARCH REPORT ON THE COAL PILLAR RECOVERY UNDER DEEP COVER Office of Mine Safety and Health Research National Institute for Occupational Safety and Health

View more

Effect of delayed backfill on open stope mining methods

Longhole mining methods such as Avoca or longhole retreat as practiced at the Musselwhite mine of Placer Dome employs 100 extraction with the use of fill walls to provide support to the adjacent stope Transverse open stoping also practiced at Musselwhite employs cemented rock fill

View more

Backfill Practices at Çayeli Mine

The mining method employed at CBI is designed for mining method is transverse and or longitudinal long hole Retreat from the boundary of the ore body to

View more

TECHNICAL REPORT AND PRELIMINARY ECONOMIC

technical report and preliminary economic assessment of the upper beaver gold copper deposit kirkland lake ontario canada for queenston mining inc

View more

SURFACE COAL MINING MANAGEMENT Paul Westcott The geological characteristics of surface coal mining which distinguish it from other surface mining are the nature of

View more

Introduction to Longwall Mining and Subsidence Mine

2 Aug 2007 The Longwall Mining Process 3 configuration is known as retreat mining When coal is extracted using this method the roof immediately with tilt curvature and strain in both the transverse and longitudinal directions

View more

longitudinal retreat mining method samatour fr

The long hole retreat mining method was selected for the narrow orebody extraction The reasons being related to economic vein mining method The method used at David Bell mine is the Alimak mining method However for narrower veins the longitudinal

View more

Quantifying the influence of structure rock mass strength

Lapa is a high grade gold mine and uses two mining methods – longitudinal retreat with cemented backfill and locally transverse open stoping with cemented back fill There are three distinct geological units pertinent to rock mechanics at the mine namely ultramafic volcanic and sediment units The most severe squeezing conditions

View more

longitudinal retreat mining method kovesdikerekparut eu

longitudinal retreat mining method Home longitudinal retreat mining method CDC What s New on the NIOSH Website Scope Retreat Mining Risks Design Safe Mining

View more

Sub Level Caving YouTube

3 22 2007 nbsp 0183 32 嵌入式视频 nbsp 0183 32 A method of underground mining operation

View more

The Blasting Test and Blasting Vibration Monitoring of

ORIGINAL PAPER The Blasting Test and Blasting Vibration Monitoring of Vertical Crater Retreat Mining Method in the Luohe Iron Mine Zhenbin Rao Sijing Cai

View more

Examining the influence of stope strike length on unplanned ore dilution in narrow vein longitudinal mining The mining method is longitudinal retreat with

View more

longitudinal retreat mining method greenrevolution

Eagle Mine215 Кб This method provides the cost advantages of bulk mining while maintaining a degree of selectivity and operational flexibility The majority of the stopes will be mined as transverse bench and fill stopes with some thinner thickness zones of the orebody mined as longitudinal retreat

View more

2018 News Denison Mines Corp

The more moderate grades and style of mineralization within the basement rocks of the Gryphon deposit have allowed for the application of conventional underground mining methods namely longitudinal retreat longhole stoping

View more

Transverse longhole stoping QueensMineDesignWiki

19 Mar 2012 Transverse Longhole Stoping is a popular large scale underground mining method known for its ability to simplify stope sequencing It is an open stoping method and is very similar to sub level open stoping Longitudinal longhole retreat and blast hole stoping

View more

underground retreat mining Roadheader Construction

Retreat Mining Room and pillar mining Underground Mining Retreat Mining Retreat mining is the last phase of a general kind of coal mining technique referred to as room and pillar mining

View more

SmartEXEC TM Ventilation on Demand Howden

Case study for three typical mining projects SmartEXEC TM Ventilation on Demand Ventilation on Demand VOD is a technology which has been undergoing continuous

View more

sublevel stoping mine design bsmr doesburg nl

Longitudinal longhole retreat From Queen s University Mine Design Wiki Longitudinal longhole retreat is a branch of the generic mining method known as sublevel stoping For longitudinal Geotechnical design for dilution Geotechnical design for dilution control in underground mining

View more

Sublevel Caving Technique Free download as PDF File pdf or read online for free An underground mining method used in large steeply dipping orebodies where the

View more

Musselwhite mine mill Canadian Mining JournalCanadian

Mining Access to the Musselwhite mine is through a twin decline system Where mining widths are less than 15 0 m longitudinal retreat methods are employed

View more

Geology Glossary Definitions of Geologic Terms Geology is the scientific study of the Earth the materials of which it is made the structure of those materials

View more

Underground mining techniques Universidade Federal do

CHAPTER 1 Underground Mining Methods and Applications Production Headframe Hans Hamrin 1 1 INTRODUCTION Ore is an economic concept It is defined as a concentration of

View more

ERG Easy Slot Master Video 3 YouTube

Mar 23 2014 Longitudinal longhole retreat is a branch of the generic mining method known as sublevel stoping and often requires the development of a rise

View more

DESIGN OF SUB LEVEL CAVING METHOD BY MEANS OF MINE

The principles for determining the best method for mining the Granduc ore bodies have been Longitudinal sub level caving method retreat along the strike

View more

narrow vein and low profile mining The Mancala

potential to be applied as a mining method at Conrad The vertical underground mining methods Reducing longitudinal retreat mining method LRMM

View more

Agnico Eagle Mines Limited Operations Development

opens in new window Lapa Mining Method Longitudinal Retreat opens in new window 1 25 opens in new window Lapa Mineral Processing Plant Flowsheet at

View more

Design and Application of Sublevel Stoping Methods

20 Feb 2011 This course refers to the generic mining method of sublevel stoping long hole open stoping or blasthole stoping and vertical crater retreat VCR vein Alimak mining transverse stoping Avoca and longitudinal mining

View more

vertical crater retreat mining method teratop eu

longitudinal retreat mining method vertical crater retreat mining method mining quarry crusher Underground Mining Methods and Applications

View more

vertical crater retreat mining method gujaratgenomics in

Vertical Crater Retreat Mining Method Vertical Crater Retreat Mining Method Vertical Crater Retreat – RitchieWiki – Equipment A vertical crater retreat VCR also referred to as vertical retreat

View more

First Quantum Minerals Ltd Our Business Operating Mines Çayeli

Çayeli 39 s mine design is based on underground bulk mining methods with the use of delayed backfill to extract ore in a sequential manner The primary mining method is retreat transverse and longitudinal long hole stoping with paste fill and loose or consolidated waste rock backfill The stopes are mined in primary nbsp

View more

mechanised continuous retreat mining method cut

The mining methods employed at Mufulira Mine are variants of Mechanised Continuous Retreat MCR The variant mining methods longitudinal retreat mining method

View more

C 2 Eagle Project Geotechnical Study

A stope stability assessment was completed using the Mathews Method based on the initial stope dimensions for transverse 15 60 m by 20 m by 30 m high and longitudinal 5 15 m by 60 m by 30 m high longhole mining as proposed in the AMEC Scoping Study

View more

sublevel open stoping in south african gold mines

longitudinal retreat mining method – Grinding Mill China sublevel open stoping in south african gold mines endeavour mining cotdvour longitudinal retreat mining method what is the process of mining galena sublevel open stoping in south african gold mines

View more

Underground Mining Methods and Equipment

1 Underground Mining Methods 1 1 Classification of Underground Mining Methods Mineral production in which all extracting operations are conducted beneath the ground surface is termed underground mining Underground mining methods are usually employed when the depth of the deposit and or the waste to ore ratio stripping ratio are

View more

Major Mines Projects Cayeli Mine

Çayeli s mine design is based on underground bulk mining methods with the use of delayed backfill to extract ore in a sequential manner The primary mining method is retreat transverse and longitudinal long hole stoping with paste fill and loose or consolidated waste rock backfill

View more

Effect of delayed backfill on open stope mining methods

Longhole mining methods such as Avoca or longhole retreat as practiced at the Musselwhite mine of Placer Dome employs 100 extraction with the use of fill walls to provide support to the adjacent stope Transverse open stoping also practiced at Musselwhite employs cemented rock fill adjacent to a mined stope The question is how to account for the overall stope wall stability when the adjacent

View more

Lapa Mine ground control practices in extreme squeezing

2 2 Mining method The primary mining method used at Lapa is longitudinal open stoping with cemented backfill Figure 4 Sublevels are developed at 30 m intervals and the ore is removed between the sublevels using the long hole blasting technique in a longitudinal retreat configuration Typical stope size is 12 m wide by 30 m high

View more

vertical crater retreat mining method

Geotechnical aspects of vertical crater mining method in a Vertical Crater Retreat is compared to other open stoping methods Various geotechnical factors have been considered including the effects

View more

Ventilation on Demand VOD VentSim CONTROL Howden

Mining method Long hole Mining method Long hole longitudinal transverse Tonnage Mining method Long hole longitudinal retreat Tonnage 4 000 tpd

View more

Mining methods and method selection Springer Link

operations which together compose the mining method for an orebody This chapter considers in an introductory way the relation METHODS AND METHOD SELECTION be retreat from a mine panel or district inducing collapse of the immediate roof a Longitudinal section b ross section of a VCR stope using long nbsp

View more

Modern Practices for the Design and Planning of

Modern Practices for the Design and Planning of Underground Mines Rob McGill Head of Mining WorleyParsonsTWP Contents Mining Method Selection Common Methods Block Cave Sub level cave Longitudinal Sub Level Open Stoping Longitudinal Retreat Existing mining

View more

Types of Underground Mining Method Comparison 911

4 Apr 2017 Factors Affecting Choice of Method Review of Stoping Methods Underhand Stoping Mining Method Overhand Stoping Method Longitudinal

View more

Initial effects of improved drill and blast practices on stope stability at

Underground Design Methods 2015 Perth Australia 241 Initial effects Bulyanhulu is a narrow vein gold mine employing longitudinal longhole open stoping The mining front retreats towards a central pillar for each panel Sill pillars are left

View more

Longitudinal Retreat Mining Method uniqueevent in

longitudinal retreat mining method Roux from BLA recently completed the analysis and design of a bottom up longitudinal retreat open stoping method longitudinal retreat mining method longitudinal retreat mining method longitudinal retreat mining method Eagle Mine215 Кб This method provides the cost advantages of bulk mining

View more

STILL DRAFTING PROJECT REAL 2 SlideShare

STILL DRAFTING PROJECT REAL 2 1 i DECLARATION I declare that this project is my own work It is being 11 Fig 3 1 Longitudinal Retreat Mining Method

View more

Underground mining methods Hans Fernberg 图文 百度文库

Sub Level Caving Longitudinal retreat at Ferbasa mine Brasil Total Chromite production 500 000 tonnes year Cable bolting supports production drifts Sublevel Caving Sublevel Caving For large scale ore bodies Bulk mining Pillar recovery High productivity Repetitive operations Mechanization Automation Drawbacks High ore losses 20

View more

Type of Discharge Precipitation Event Effluent Limitations Pit Water all Group A Surface runoff from active area dry weather less than or equal to 10yr 24hr

View more

Vertical crater retreat mining in the Sudbury Basin

Faced with rising costs and lower metal prices several Ontario base metal sulphide mines have changed their method of mining to vertical crater retreat mining

View more

Design and Application of Sublevel Stoping Methods

The most commonly used sublevel stoping mining methods are sublevel open stoping long hole open stoping or blasthole stoping and vertical crater retreat VCR Variations of this method include vein Alimak mining transverse stoping Avoca and longitudinal mining

View more

Mining Terms Magyver

Longitudinal Retreat Mining A method of mining an orebody beginning at one stope and gradually mining new stopes towards the central ore handling system Long hole open stope A method of mining involving the drilling of holes up to 90 feet long into an ore body and then blasting a slice of rock which falls into an open space

View more

longitudinal retreat mining methods Sudbury Mining Solutions

Sudbury Mining Solutions Journal is printed quarterly March June September and December Circulation includes distribution to mining executives consultants suppliers distributors government officials and opinion leaders across Canada and around the world

View more

Discrete element modelling of the buckling phenomenon in

Lapa is a high grade gold mine operating through a 1369 m deep shaft using two mining methods longitudinal retreat with cemented backfill and locally transverse open stoping with cemented backfill Squeezing conditions appear in shallower developments than in LaRonde starting from 510 m depth

View more

Two main Classes of Underground Mining Methods

Method Longitudinal Stoping – Long axis of stope is parallel to orebody Methods VCR Method of Mining Sub Level Stoping Vertical Crater Retreat

View more

Business Planning Group Vale

1 3 Vertical Retreat Mining Vertical retreat mining VRM is a bulk method of mining used in most of Vale s underground mines It is a versatile method that can be used for longitudinal or transverse mining applications VRM is best suited for ore dipping at 55° or greater and may be used in a variety of ground conditions where the drilled

View more

OSISKO DELIVERS POSITIVE PEA FOR WINDFALL PROJECT

The mining method selected is long hole with longitudinal retreat on panels with minimum dimensions of 20 length x 20 height metres and minimum thicknesses of 3 5 to 4 0 metres Mineralized material will be extracted using a fleet of 14 tonne load haul dumps LHDs and 50 tonne haul trucks using a ramp at a rate of 2600 tpd

View more

longitudinal retreat mining method thechangefoundation in

Mining and Processing Agnico Eagle Mines Mining Lapa hosts an underground mining operation accessed by a 1 369 metre deep shaft Two mining methods are used – longitudinal retreat

View more
pre:shanxi cone backing filler manufacturersnext:grinding ball manufacturing process