Unplanned dilution and ore loss prediction in longhole
unplanned dilution and ore loss in mines, which will not only enhance productivity, but will also be beneficial for stope planning and design. Keywords stoping, unplanned dilution, ore loss, artificial neural network. * Department of Mining Engineering and Metallurgical Engineering, Western Australian School of Mines, Curtin University, Australia.
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A transition from a large open pit into a novel
With respect to the management of late dilution from any failure of the west slope of the open pit, the plan is to leave a buffer of ore from the open pit directly above the expected cave breakthrough zone of the first macroblocks, as shown in Fig. 20, Fig. 21. This buffer would be created using blasted ore from the last pushback of the open pit.
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ore dilution and ore recovery LinkedIn SlideShare
10/4/2019 · It is convenient to consider dilution in two egories: I) Internal Dilution, II) External (Contact) Dilution Figure 3: A mining block in an open pit visualizing internal and external dilution (Ebrahimi, 2013) @Hassan Harraz 2019 Ore Dilution and Ore Recovery 2
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Controlling operational dilution in openpit mining
When discussing openpit mining, dilution and ore loss are sometimes assumed as fixed factors in geostatistical block models and cutoff grade calculations, without considering specific
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Ore Dilution – An Underground Perspective
3/11/2019 · In open pit mining, ore losses are not typically given much consideration. However in underground mining they can have a great impact on the project life and economics. Mining method sketches can play a key role in understanding underground dilution and ore losses, even in today''s software driven mining world.
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Measurement and Modelling of Blast Movement to Reduce Ore
Drilling and blasting is required in most open pit mines to fragment and loosen the insitu rock mass The nature of blasting results in the movement of the rock mass Not accounting for blast movement in postblast grade boundaries can cause ore loss and dilution Ore loss occurs when valuable mineral is sent to the waste dumps
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Estimating Mining Factors Dilution and Ore Loss in Open
Estimating Mining Factors (Dilution and Ore Loss) in Open Pit Mines (English) Bertinshaw, R. / Lipton, I. / Australasian Institute of Mining and Metallurgy New search for: Bertinshaw, R.
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Ore Loss and Dilution A Mine Engineering Study
Background. This document outlines a mine engineering study for the assessment of ore loss and dilution in an open pit operation. Some influences which impact ore loss and dilution at the time of
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Mining KCGM
They influence the direction and magnitude of a blast, sometimes resulting in loss or dilution of ore. If large voids are detected further underground they may be collapsed by deep blasting or backfilled to reduce the risk and allow continued mining. Download Fimiston Open Pit Voids Models. Longreach Drill
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Calculation and Management for Mining Loss and Dilution
dilution calculation method, this thesis introduces the operating principle and process of calculating the loss rate and dilution rate at the mining fields by adopting geological models. As an example, authors establishes 3D models of orebody units in the exhausted area and mining fields in Yangshu Gold Mine in Liaoning Province, and conduct
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Wesdome Gold Mines Ltd. Mishi Open Pit Mine
From crosssectional evaluation, the dilution was estimated to range between 1012% pure waste with ore recoveries ranging between 8590% with good blasting practice as well as good dilution control practices. The open pit was designed with Whittle Pit software and incorporated a ramp into the pit.
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v116n2a6 Monitoring ore loss and dilution for minetomill
considered open pit mining (Ebrahimi, 2013, p. 2) and pittoplant operations (Gillot, 2004, p. 1) as subjects and then generalized these of ore loss and dilution on the mill efficiency, and time tracking of ore movement from source to the plant. The study revealed that fragmentation, underground accumulation of ore, and dilution have a
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Risk assessment of dilution in open pit mines SpringerLink
3/14/2016 · Mining dilution is one of the most important factors which affects all parameters of mining projects. It is a dangerous virus that, if not controlled, is rapidly spread in all stages of mining project and it can paralyze the mine. According to studies carried out in this paper, dilution can cause adverse impacts on the environmental, economic, community, technical, and safety issues, and its
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Ore Control & Dilution Solution Ore Controller Datamine
Ore Controller is an intelligent ore control system that fits seamlessly into your mine''s existing operations and processes. Using a central database and customisable workflow, Ore Controller breaks up grade control tasks into clearlydefined activities, and guides each user through their daytoday work.
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Optimized design of drilling and blasting operations in
Carefully engineered blasting will be an even more important aspect of successful open pit mining as already know in the past and moreover in the future as: (1) pits become deeper and steeper, (2) quality separation to avoid dilution and ore losses during blasting become paramount and (3) greater attention is paid to optimizing the entire mine
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open pit mining of iron ore martrak.eu
Open Pit Iron Ore Mining, Stock Footage Video ( Get a 11.000 second open pit iron ore mining, stock footage at 29.97fps. 4K and HD video ready for any NLE immediately. Choose from a wide range of similar scenes. Video clip. Get price
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Dilution and ore recovery QueensMineDesignWiki
Figure 2: Mining block in an open pit visualizing internal and external dilution (Ebrahimi, 2013) Primary and Secondary Dilution Estimating dilution prior to mining is a challenging task, demanding the use of an engineer''s best judgement to assess the feasibility and economic value of
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Mine dilution management MICROMINE mining software
6/9/2017 · Using high precision GNSS (global navigation satellite system) technology, Pitram is able to accurately extract ore from within each block, minimising dilution and increasing the overall efficiency of the operation. Drill and blast module. Pitram''s drill and blast module also provides mine dilution management for both open pit and underground
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Strategic open pit mine plan can unlock Pöyry global
An example of a strategic change to an open pit mine plan as metal prices rise and therefore allow production access to deeper ore. Open pit optimization in general. Open pit optimization is a method to optimize and evaluate the economically best mineable shape of the open pit in terms of data available.
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Calculation and Management for Mining Loss and Dilution
dilution calculation method, this thesis introduces the operating principle and process of calculating the loss rate and dilution rate at the mining fields by adopting geological models. As an example, authors establishes 3D models of orebody units in the exhausted area and mining fields in Yangshu Gold Mine in Liaoning Province, and conduct
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Managing Ore Loss and Dilution for Blast Optimisation
ore loss and dilution, resulting in the development of tools to measure and model blast movement. Using these stateoftheart tools, JKTech has developed a scientific methodology to minimise ore loss and dilution in open pit mines.
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Ore Dilution & Recovery in Mining
Recovery and dilution usually are interrelated with some methods of stoping a high recovery involves contamination of the ore from the walls or capping, and often clean ore can be obtained only by leaving some ore in the mine. In openstope mines the greatest loss of ore is that tied up in pillars left for support of the back or hanging wall. The amount of ore thus left varies considerably
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Appendix E8 Impact Assessment Agency
MMMemo KSM Loss and Dilution 2012 Apr 29.docx Page 1 Memo From: Jesse Aarsen To: Tracey Meintjes, Jim Gray Date: April 29, 2012 Re: KSM 2012 PFS Loss and dilution calculations 1. Introduction The KSM project is a large open pit coppergold porphyry deposit. The orebody is continuous within the cutoff grade shell.
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Estimation of Open Cut Mining Recovery and Mining Dilution
Estimation of Open Cut Mining Recovery and Mining Dilution By Kent Bannister, ARMIT, FAusIMM (CP), CEO Kent Bannister Pty Ltd, (KBPL) Summary Loss and dilution of Mineral Resource grade occurs during mining activities. Mining Recovery and Mining Dilution estimates are a required consideration in the reporting of Ore Reserves for mineral projects.
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(PDF) Controlling operational dilution in openpit mining
5/21/2018 · When discussing openpit mining, dilution and ore loss are sometimes assumed as fixed factors in geostatistical block models and cutoff grade calculations, without considering specific
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Theta (Open cut) Project Theta Gold Mines
The Theta Openpit Starter Project includes the Columbia Hill deposit and part of the Theta Hill deposit within Mining Right 83 ("MR83") (see "Map2", "Figure 1") in the Pilgrims Rest area of South Africa. Waste Rock dumps of various sizes and from four main areas which were sampled by Rand Mines in the 1990''s are now included in
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Ore Dilution – An Underground Perspective
3/11/2019 · In open pit mining, ore losses are not typically given much consideration. However in underground mining they can have a great impact on the project life and economics. Mining method sketches can play a key role in understanding underground dilution and ore losses, even in today''s software driven mining world.
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Risk assessment of dilution in open pit mines SpringerLink
3/14/2016 · Mining dilution is one of the most important factors which affects all parameters of mining projects. It is a dangerous virus that, if not controlled, is rapidly spread in all stages of mining project and it can paralyze the mine. According to studies carried out in this paper, dilution can cause adverse impacts on the environmental, economic, community, technical, and safety issues, and its
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MOD Delivers 61% Increase in T3 Open Pit Ore Reserve to 34
3/25/2019 · • T3 open pit Ore Reserve increased to 34.4Mt at 1.0% Cu and 13.2 g/t Ag • Ore Reserve contains 342.7kt (~756mlb) of copper and 14.6 Moz of silver Ore loss and dilution were applied to the Mineral Resource model in a twostep process which resulted in an ore loss of approximately 9%
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Open pit MAXAM
The exploitation of an openpit mine is an exercise in safety, efficiency and productivity. Achieving optimal fragmentation and dilution control is essential for the extraction to be as efficient as possible, minimizing the We executed a project in an iron ore mine where standard blast designs were 15inch boreholes in 8 m x 8 m square
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Dilution, Ore Grade and Blast Movement AusIMM
This paper investigates ore loss and dilution produced by rock movement in bench blasting. A total of four blasts, in which electronic detonators have been used, were monitored in Cobre Las Cruces Open Pit Mine (FQM Ltd) in Gerena (Sevilla, Spain). Rock motion has been obtained in
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Controlling operational dilution in openpit mining
5/18/2018 · Dilution and ore loss are important factors that can affect costs and profitability of a mining operation by lowering the quantity of mineral or metal that can be produced from each ton of processed ore. When discussing openpit mining, dilution and ore loss are sometimes assumed as fixed factors in geostatistical block models and cutoff grade
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THE IMPORTANCE OF DILUTION FACTOR FOR OPEN PIT MINING
Ore losses and dilution are present at all stages of mining and while several models can investigate the influence of dilution it is its quantifiion that poses the most serious challenge (Pakalnis et al., 1995). This paper introduces a methodology to quantify dilution factor in open pit mines. The proposed
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Estimating Mining Factors (Dilution and Ore Loss) in Open
The estimation of dilution and ore loss is therefore an essential part of any Ore Reserve estimate or mine schedule. Large open pit mines are driven by the economies of scale that are achieved at the cost of less selectivity in the discrimination of ore and waste.
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Ore Dilution Prediction – Its Always an Issue
·ಌ/18/2018My preference is use a zero dilution factor for optimization since the nature of the ore zones will be different at different revenue factors and hence dilution would be unique to each. It would be good to verify the impact that the dilution factor has on your own pit optimization, otherwise it is simply being viewed as a contingency factor.
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calculating dilution factor in mining
the importance of dilution factor for open pit mining SRK Consulting. Estimating Mining Factors (Dilution and Ore Loss) in Open Pit Mines using examples from large open pit stratiform copper and magnetite deposits. This can be More details » Get Price.
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