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PIT 2 1.2 Blast Movement Monitoring The aim of rock excavation in an open pit mine is to produce an optimum mill feed with minimum dilution to maximise recovery at a minimum operating cost. Little and Van Rooyen (1988) were among the first to identify blast-induced dilution as a …
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Air interval deep - hole blasting in open pit mine ; Planning decision system for open pit mine and its application ; Practice of ore dilution management in tiegukeng open pit mine ; The open pit mine accounts for …
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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 …
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considered open pit mining (Ebrahimi, 2013, p. 2) and pit-to-plant 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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Drilling and blasting are required in most open pit mining operations to fragment and loosen the in situ rock mass. The mischaracterisation of grade boundaries as a result of blast movement can have a major impact on ore loss and dilution, and can lead to significant financial losses in open pit mines. Ore loss takes place when valuable mineral is sent to waste dumps, and ore dilution occurs ...
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Reduce ore dilution and loss in open pit mines | BMT · Dilution can be a major contributor to poor grade results, and blast movement is a significant cause of dilution and ore loss 1 BMT s with geologists from over 105 open pit operations around the world to accurately measure 3D blast movement so
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Open Pit Mine Design, Planning, and Engineering ... Dilution increases the operating costs in the mill by increasing the tonnage of material to be milled. By better understanding the root causes of the dilution, quanitiying it, and planning accordingly, it can be controlled and reduced.
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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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Dilution and ore loss have an important bearing on the success of open pit mining projects. Their impacts on production costs, revenues and production rate require that they are correctly modelled in the long-term mine plan. The estimation of dilution and ore loss is therefore an essential part of any Ore Reserve estimate or mine schedule.
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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 ore-body units in the exhausted area and mining fields in Yangshu Gold Mine in Liaoning Province, and conduct ...
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Academia.edu is a platform for academics to share research papers.
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Reduce ore dilution and loss in open pit mines BMT. 12/7/2018 Dilution can be a major contributor to poor grade results, and blast movement is a significant cause of dilution and ore loss 1. BMT works with geologists from over 105 open pit operations around the world to …
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Measuring Blast Movement To Reduce Ore Loss … Dilution and ore loss have an important bearing on the success of open pit mining projects. Their impacts on production costs, revenues and production rate require that they are correctly modelled in the long-term mine plan.
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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 open-stope mines the greatest loss of ore is that tied up in pillars left for ...
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Open Pit Planning Deliver the best possible plan in record time by applying Datamine's world-leading automation and optimisation tools throughout your mine planning process. Datamine provides a full range of open pit planning applications from strategic long term optimisation, pit design and reserve generation through to short term material ...
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Mining Factors Affecting Hanging Wall Dilution. FINAL - Mining and Development in Peru ... challenges and 44 19121047 Rekhraj Sahu opportunities Choice of a Spiral ramp vs a Zig- Zag ramp in Open Pit 45 19121048 Reman Kumar Patel Mining Factors to be considered for Choice of an Incline over an 46 19121049 ... crosscuts & Level drives for ore ...
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Internal dilution refers to waste or even low-grade ore (ore below cut-off) within a mining block that cannot be mined discretely and is eventually mined with the ore in the mining block.
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= production cost to market (excluding stripping cost) of a tonne of ore C w = cost of waste removal per tonne of ore This ratio is applied only at the surface or of the FINAL pit. The controlling factors in the choice between open pit mining and underground mining are mining cost, ore recovery and dilution [2]. In an open pit mining operation, mining cost include the cost of removing the ...
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To continuously liaise with key stakeholders to ensure ore loss, ore dilution, and misclassification is minimized within the pit. Key Duties and Responsibilities: Conduct daily field ore delineation and control; Champion efforts to minimize unplanned dilution, ore loss, and misclassification
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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 137 points of the free face and 6 points inside the block.
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My 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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Ore losses and dilution are present at all stages of mining and while several models can investigate the influence of dilution it is its quantification 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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relationship between the waste and ore volume. Different sensitivity analysis will also be performed in order to appreciate what happens to the project economics when certain variables of high importance, such as the processing capacity, gold price and dilution rate vary. Open-pit …
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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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ore dilution and ore recovery. As a mining project is developed from conceptual to production phases, there exist a variety of uncertainties and difficulties that affect the operation's designs and economic value. A notable design parameter to be taken into account is the factor of dilution.
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For maximum metal recovery, considering the movement of ore and waste during the blasting process in loading design is meaningful for reducing ore loss and ore dilution in an open-pit mine.
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Our client, an ASX-listed base metals developer, has engaged MPi to help them find an experienced Open Pit Mine Geologist to join the team at their project located in the Pilbara region of Western Australia. Key responsibilities will include: Manage grade control activities. Dig block design. Monitor dilution and ore recovery.
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Key considerations to evaluate are: open pit stability, shaft stability, dilution, mud rushes and air blasts, and mining method selection. Planning Considerations: The efficient transition from open pit mining to an underground operation requires extensive planning. For a large mining operation, planning could last as long as 20 years.
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The open pit mine comprises volcanogenic-style gold deposits, with most mineralization occurring in sulphide bearing veins within felsic quartz-phyric rocks. ... Calculate potential losses from dilution and ore loss that would have occurred if blast movement was not accurately accounted for. 7. Blast 1: Model vs measurement variability over 50% ...
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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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open pit mining operation that affect mine and mill waste generation were selected (table 1). 11 They include waste-to-ore ratios, mine ore reserves, ore dilution, 1 ore grade, ore recovery,
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Dilution and ore loss – A short practical guide . Following are a few helpful pointers when dealing with dilution and ore loss. Please refer to the ... Most of the information in this whitepaper is relevant to open pit operations, however many of the concepts can be applied to underground situations .
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