• Choice of Method Welcome to the Narrow-Vein Mining

    During the visit, the mine was putting more emphasis on the narrow-vein mining method. The method used at David Bell mine is the Alimak mining method. However, for narrower veins, the longitudinal retreat mining is used. The selection criteria for the Alimak mining method are numerous. The main one is based on economic and the other ones are: Width of the ore;

    Silvercorp Metals Inc. Mining 101

    Mining 101 Narrow Vein Mining Methods Shrinkage Stoping. There are several mining methods that can be used for narrow, steeply-dipping veins like those at our Ying and GC operations. The most cost-effective narrow vein mining technique is shrinkage stoping. This approach allows the development of large stopes, thereby reducing the amount of

    Narrow-vein modelling and Mineral Resource estimation

    Fowler A, Davis C, 2011, “Quantifying Uncertainty in a Narrow Vein Deposit An Example from the Augusta Au-Sb Mine in Central Victoria, Australia”, Proceedings of the Eighth International Mining Geology Conference, 2011. Bertoli O et al, 2003, “Two dimensional Geostatistical methods Theory, Practice and a Case Study from 1A Shoot Nickel Deposit, Leinster,

    Narrow-Vein Mining Research Project

    This presents a great challenge for narrow-vein operations. The actual mining parameters and existing mechanized equipment make profitability difficult to achieve. It is clear that the future of narrow-vein mines depends on the development of innovative extraction methods and equipment. This web site presents the results of a research project on narrow-vein mining

    Design and application of an efficient mining method for

    techniques worldwide for mining gently-dipping narrow vein: Longwall mining method: this method is suitable for mining bedding deposit with a dip less than 35°, 3-4 m thickness and poor roof. The advantages of this method are simple layout, high labour productivity, good stope ventilation and low dilution and loss. The ore recovery is typically high, reaching up to 80-95%.

    (PDF) Narrow-vein stoping practice: a United Kingdom

    Narrow-vein mining presents operators with a number of problems: (1) complex geology and grade distribution, mean- Fig. 1 Roskear I lode, 420 level, South Crofty.

    Strategies for Minimising and Predicting Dilution in

    dominant narrow vein mining method in both Australia and Canada. While longhole stoping has lower mining costs per tonne and higher production rates than conventional mining methods, longhole stoping has been associated with increased dilution. Therefore, mining method selection is relevant to minimising narrow vein dilution. The economic performance of narrow vein

    Topic 9: Mining Methods Part V- Underground Mining

    Selective Mining Methods Unselective Mining Methods 1) Narrow vein 2) Long-hole Open stoping 3) Sublevel Open stoping 4) Cut and Fill (C & F) stoping 5) Bench and Fill (B &

    Digging deeper: Mining methods explained Anglo

    The underground mining methods we use include room and pillar, narrow vein stoping and large-scale mechanised mining. Room and pillar mining is a style of mining where tunnels are driven in a chess board pattern with massive square pillars between them which are gradually cut away as the work proceeds.

    Lecture 4: Underground Mining SlideShare

    02/11/2011· a) Short-hole and Long-hole mining methods; b) Selective and unselective mining methods; and c) Unsupported,supported and caving underground mining methods Hard rock underground mining methods can be classified as the following:- Hard rock Mining Methods Selective Mining Methods Unselective Mining Methods 1) Narrow vein 2) Long-hole Open

    Narrow-Vein Mining Research Project

    This presents a great challenge for narrow-vein operations. The actual mining parameters and existing mechanized equipment make profitability difficult to achieve. It is clear that the future of narrow-vein mines depends on the development of innovative extraction methods and equipment. This web site presents the results of a research project on narrow-vein mining

    Narrow Vein Mining 2 World of Mining Professionals

    Reducing Dilution With Narrow-vein Mining A plan that considers drive size, blast design and quality control provides the best results By Paul Salmenmaki. Figure 1.1—Minimum dilution is achieved by using the optimal equipment and smaller ore drives for the LHOS methods. AMC has conducted numerous studies to reduce dilution for mechanized narrow vein mining methods in operating mines. Methods

    Reducing Dilution With Narrow-vein Mining

    mechanized narrow vein mining methods. This webinar presents a high-level discussion of a study conducted by AMC to determine the optimum (minimum) dilution that could be reasonably applied to a narrow vein orebody through the use of: • Compact equipment • Varying development sizes • Drill and blast designs

    Narrow-vein modelling and Mineral Resource

    Fowler A, Davis C, 2011, “Quantifying Uncertainty in a Narrow Vein Deposit An Example from the Augusta Au-Sb Mine in Central Victoria, Australia”, Proceedings of the Eighth International Mining Geology Conference, 2011. Bertoli O et al, 2003, “Two dimensional Geostatistical methods Theory, Practice and a Case Study from 1A Shoot Nickel Deposit, Leinster,

    MVM1100 Narrow Vein Mining YouTube

    12/07/2013· Mechanised narrow vein mining

    Strategies for Minimising and Predicting Dilution in

    dominant narrow vein mining method in both Australia and Canada. While longhole stoping has lower mining costs per tonne and higher production rates than conventional mining methods, longhole stoping has been associated with increased dilution. Therefore, mining method selection is relevant to minimising narrow vein dilution. The economic performance of narrow vein

    Topic 9: Mining Methods Part V- Underground Mining

    Selective Mining Methods Unselective Mining Methods 1) Narrow vein 2) Long-hole Open stoping 3) Sublevel Open stoping 4) Cut and Fill (C & F) stoping 5) Bench and Fill (B &

    Sandvik launches new narrow vein drills Australian

    These small tunnel mining methods are an economic way to extract ore and control the ore dilution, but the right equipment is essential in these narrow veins. Sandvik’s narrow size drills are

    Mining Machines for Small Spaces E & MJ

    As noted in last year’s review (Niche Machines for Narrow-Vein Mining), Boart Longyear’s focus for narrow-vein applications is on long-hole rigs for stoping. Weighing just 3.75 mt, its StopeMate pneumatic production drill is small enough to fit through a 1.3-m x 1.9-m (50 x 75-in.) opening, and can fit into a man cage with no disassembly. It can also be split into six manageable pieces for

    Lecture 4: Underground Mining SlideShare

    02/11/2011· a) Short-hole and Long-hole mining methods; b) Selective and unselective mining methods; and c) Unsupported,supported and caving underground mining methods Hard rock underground mining methods can be classified as the following:- Hard rock Mining Methods Selective Mining Methods Unselective Mining Methods 1) Narrow vein 2) Long-hole Open

    Narrow vein underground mining Maptek

    narrow vein mining, vein characteristics and grade can change rapidly. Local resource models rapidly become outdated as information is collected from drifting along veins. Short term modelling requires vein models to be rebuilt regularly. Monthly rebuilds fit the reconciliation and short term planning cycles, and lead to better quality resource models and long term planning.

    Strategies for Minimising and Predicting Dilution in

    dominant narrow vein mining method in both Australia and Canada. While longhole stoping has lower mining costs per tonne and higher production rates than conventional mining methods, longhole stoping has been associated with increased dilution. Therefore, mining method selection is relevant to minimising narrow vein dilution. The economic performance of narrow vein

    Narrow-vein modelling and Mineral Resource

    Fowler A, Davis C, 2011, “Quantifying Uncertainty in a Narrow Vein Deposit An Example from the Augusta Au-Sb Mine in Central Victoria, Australia”, Proceedings of the Eighth International Mining Geology Conference, 2011. Bertoli O et al, 2003, “Two dimensional Geostatistical methods Theory, Practice and a Case Study from 1A Shoot Nickel Deposit, Leinster,

    (PDF) Reducing Selectivity in Narrow-Vein Mining

    Keywords narrow-vein mining, bulk methods, underground pre-concentration, backfill, economics 1. Introduction The majority of Canadian hard-rock narrow-vein mines are mature, and face the need to mine deeper deposits in the face of increasing costs and declining grades. Obstacles to the successful mining of such deposits include ground control, material handling

    Narrow Steeply Dipping Veins

    Mining of Narrow Steeply Dipping Veins Mining of Narrow Steeply Dipping Veins By B E Hall1 Introduction Many mineral deposits occur as steeply dipping narrow veins. In the past, these have been worked either by high cost labour intensive methods which are able to follow the vein with minimal dilution for high grade production, or by lower cost mechanized methods

    Underground mining (hard rock) Wikipedia

    The mining method selected is determined by the size, shape, orientation and type of orebody to be mined. The orebody can be narrow vein such as a gold mine in the Witwatersrand, the orebody can be massive similar to the Olympic Dam mine, South Australia, or Cadia-Ridgeway Mine, New South Wales. The width or size of the orebody is determined by the grade as well

    (PDF) Quantifying Uncertainty in a Narrow Vein Deposit

    Methods for dealing geometry at Augusta is simple relative to other narrow vein with these specific narrow vein mining issues are not well deposits (eg Taylor, 1998; Newton et al, 1998; Watchorn established in the industry and often rely on ad-hoc responses. and Wilson, 1988), which is probably due to the rheological The following sections on vein geometry, thickness

    Niche Machines for Narrow-Vein Mining E & MJ

    Paus is going to launch an electric-powered LHD for narrow-vein mining at the bauma 2013 trade fair in April—the PFL 12e. The company’s general manager, Franz-Josef Paus, pointed out to E&MJ that electric LHDs will become increasingly common in narrow-vein operations, since they offer a number of advantages over diesel engines. Ventilation requirements is one factor,

    Co-O mine Medusa Mining Limited

    To minimise dilution of the ore, narrow vein mining methods such as shrink stoping and slot stoping are used and the ore is hauled to the surface via an underground track system and shafts. CO-O MILL. The Co O Mill is located approximately 6km north of the mine and has a capacity of 2,500tpd. It was commissioned in the March 2014 as a conventional gold mill, comprising a

    Lecture 4: Underground Mining SlideShare

    02/11/2011· a) Short-hole and Long-hole mining methods; b) Selective and unselective mining methods; and c) Unsupported,supported and caving underground mining methods Hard rock underground mining methods can be classified as the following:- Hard rock Mining Methods Selective Mining Methods Unselective Mining Methods 1) Narrow vein 2) Long-hole Open

    Design and application of an efficient mining method for

    techniques worldwide for mining gently-dipping narrow vein: Longwall mining method: this method is suitable for mining bedding deposit with a dip less than 35°, 3-4 m thickness and poor roof. The advantages of this method are simple layout, high labour productivity, good stope ventilation and low dilution and loss. The ore recovery is typically high, reaching up to 80-95%.

    The Narrow Vein Mining Advantage Great Eastern Gold

    The advantages of narrow vein mining are multiple. Firstly, the initial capital expenditure for a narrow vein operation is much lower, as it is a small operation with smaller and less equipment than traditional mining methods. Secondly, narrow vein mining is far more precise in targeting the ore body. In most mining operations, the size of the

    (PDF) Reducing Selectivity in Narrow-Vein Mining

    Keywords narrow-vein mining, bulk methods, underground pre-concentration, backfill, economics 1. Introduction The majority of Canadian hard-rock narrow-vein mines are mature, and face the need to mine deeper deposits in the face of increasing costs and declining grades. Obstacles to the successful mining of such deposits include ground control, material handling

    Narrow Vein Mining WOMP

    PAUS reported its narrow vein mining applications equipment offer an excellent total cost of ownership, which is the focus of product development at the company. Beyond that focus, the PFL 8 LHD offers ease of use, high load capacity, operator safety, optimal visibility and an “excellent payload-to-weight ratio,” Helmut Jaspersen, marketing manager, said. The loader

    Resue Firing and Dilution Control in Narrow Vein

    Mining of narrow vein mineralisation, invariably depending on the mining method selected, involves the extraction of both ore and waste rock. The level to which mining of waste rock can be minimised depends on numerous factors, but particularly the thickness and dip of the deposit. Resue mining is a method of mining that allows split...

    Epithermal Gold Deposits Geology for Investors

    15/02/2021· They are best mined by underground narrow vein methods. Rarely, closely spaced veins or vein swarms can occur, allowing open cut mining methods to become economically feasible. The term epithermal was coined to describe a relatively shallow deposit, hence the Greek word “epi” meaning shallow and the “thermal” part of the word referring to the heated

    Underground mining (hard rock) Wikipedia

    The mining method selected is determined by the size, shape, orientation and type of orebody to be mined. The orebody can be narrow vein such as a gold mine in the Witwatersrand, the orebody can be massive similar to the Olympic Dam mine, South Australia, or Cadia-Ridgeway Mine, New South Wales.The width or size of the orebody is determined by the grade as well

    An investigation of mechanisms T involved in backfill-rock

    in narrow vein mining by F.P. Hassani*, A. Mortazavi†, and M. Shabani† Synopsis Today, mine backfilling has become an integral part of mining operations, both from a local and overall ground control point of view, and as regards mining techniques and environmental consid-erations. During the past decade, substantial research has been

    Types of Mining Methods Sell Side Handbook

    09/03/2018· Cut-and-fill stoping is a preferred method for high grade ore bodies with a steep dip size or irregular shape or vein structure. It is a versatile method that provides high ore recovery and is suitable for deposits that require mining ore out of selected ore pockets. Cut-and-fill allows selective mining and separate recovery of high grade sections and is therefore useful for ore

    Modern Mining Underground Anglo American

    Based on proven raise-boring technology but designed to drill narrow vein hard rock ore body of just 1m-1.5m. It is in proof-of concept testing in South Africa. Taken together, the safety and productivity gains from a continuous mining process in hard rock are significant: yielding improvements in tunnel advance rates and reduction in operating costs, while removing people

 

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