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Pit Optimization – How I View It

Pit Optimization – How I View It. One of the first steps in open pit mine design is the pit optimization analysis. Pit optimization is used to define the most profitable pit shell (or nested pit shells) for a given set of economic parameters. The economic parameters include the metal prices, process recoveries, and operating costs.

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Design of openpit mining - SlideShare

E Contd. E. Pit design Overall slope of a pit depends on several factors of the pit slope: a) Geological disturbances like faults etc. b) Hydrological condition of strata c) Orientation of slip planes d) Nature of strata – i.e. hardness, material consolidation etc. e) Depth of workings f) Design of haul roads & ramps in the highwall g ...

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Optimal Open Pit Design and Life of Mine Scheduling of the ...

70 GJJTT Vol. 2, No. 2, March, 2018 Optimal Open Pit Design and Life of Mine Scheduling of the Bisha Volcanogenic Massive Sulphide Deposit* 1P. A. Eshun and 2N. Baafi 1University of Mines and Technology, P.O. Box 237, Tarkwa, Ghana. 2Perseus Mining Ghana Limited, 4 Chancery Court, P.O. Box, CT 2576, Cantonments, Accra, Ghana. Eshun, P. A and Baafi, N. (2018), "Optimal Open Pit Design …

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Open-pit mining - Wikipedia

Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique of extracting rock or minerals from the earth from an open-air pit, sometimes known as a borrow.. This form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining.Open-pit mines are used when deposits of commercially ...

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Analysis of Safety Aspects And Mining Practices For ...

efficient mine plans. Study of South Wales open-pit site (3) provides significant relationships between the slope design and structural geological factors. The geological parameters that are most relevant to rock slope stability are: • The persistence, attitude, and nature of discontinuities within the rock mass.

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Geotechnical Factors In Open Pit Mine Design | U.S. Rock ...

1.0 N. The object of this paper is to discuss those aspects of open pit mine design which are affected by geotechnical factors. The temptation exists for some practitioners of geotechnical engineering to believe that this relatively new engineering discipline is the 'be all and end all of mining., In the opinion of the authors, this is fallacious but, as our ability to put numbers to the ...

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Optimization of blasting design parameters on open pit bench

mines Nchanga Open Pit mines are located in Chingola, in the Copperbelt province of Zambia. Open Pit mining at Nchanga started in 1938, in the main Nchanga Open Pit. More than a decade ago, Nchanga Open Pit was the largest base metals open cut in the world. It is still among the top five largest open cuts in the world. The mine's core

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SLOPE STABILITY ANALYSIS FOR OPEN PITS 1

Analyses of a deep wall in an open pit mine in the Peruvian Andes are used to compare limit equilibrium methods (SLIDE) with distinct element methods (UDEC) when the stability is controlled by rock mass strength. The pit wall has an overall slope angle of 37º and a …

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Guidelines - LOP

The research plan developed for the LOP Project focusses on three elements: preparation and publication of an authoritative new generation pit slope Design Guidelines book that clearly outlined for today's practitioners what is the best approach to satisfy best practice at every stage of planning and operating an open pit mine; the effective use of geological and geotechnical data in ...

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Basics of an open pit mine - Mine Engineer.Com

The selection of physical design parameters and the scheduling of the ore and waste extraction program are complex engineering decisions of enormous economic significance. The planning of an open pit mine is, therefore, basically an exercise in economics, constrained by certain geologic and mining engineering aspects. ... Open pit mines can be ...

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Slope Design and Implementation in Open Pit Mines ...

This article reminds the principles of slope design in open pit mines, and presents techniques and tools available to address the successive stages of slope design. Their practical implementation is then illustrated by two case studies of open pit mines. * Corresponding author. Tel.: +33 1-6469-4813; fax: +33 1-6469-4711.

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Geotechnical Considerations In Open Pit Mines

IN OPEN PIT MINING open pit mine design factors kpioutsourcing co za April 7th, 2019 - Geotechnical Considerations in Open Pit Mines Version 1 0 Department of Minerals and Energy Page 3 of 49 1 0 INTRODUCTION The potentially hazardous nature of open pit mining …

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The mine planning process for an open-pit diamond mining ...

mining cost depth escalation factor is currently US 1.6 cents per bench (bench height is 14 m). Processing costs The Letseng processing plants are also contractor-operated. Treatment costs comprise the contractor labour rates, power, spares, and consumables per ton. The mine planning process for an open-pit diamond mining operation

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Deswik - Delivering Mining Efficiency

Deswik - Delivering Mining Efficiency

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FACTORS IN THE DESIGN OF OPEN PIT SLOPES – A …

The focus of mine executives on safety has undoubtedly in part facilitated the recent long overdue revitalization of research into the design and stability of large pit slopes, the requirement for which has been recognized for many years by practitioners. This research, as well as the CSIRO Large Open Pit Study, will almost certainly provide

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Pit Slope Design Process - Home - LOP

Slope design is an integral part of the engineering of an open pit, regardless of its size. Most cases the slope angles are a key component dictating the economic viability of a proposed or current mining project. This has resulted in open pit mining operating with much lower Factor of Safety tolerances that would be used in civil engineering.

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Open Pit Mining - Mineral Processing & Metallurgy

The Fimiston Open Pit, known as the super pit, located in Kalgoorlie in Western Australia. The Pit stretches 3.8 kilometers by 1.35 kilometers wide at the surface. And it goes down to a depth of 500 meters. Another example of very large open pit is given by these images taken from the Highland Valley copper mine in central British Columbia in ...

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Selection of practical bench height in open pit mining ...

In open pit mining, factors that can affect the degree of dilution can be regarded as deposit-related or mine-related. The bench height is a mine-related parameter that can be studied using a simple geometrical model of the deposit. By changing this parameter individually, while the deposit-related parameters (such as ore

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Surface mining planning and design of open pit mining

Surface mining planning and design of open pit mining 1. 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. Permission of the author and publisher is required for any other usage.

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Open Pit Mining Handbook - wptest.brightfive.com

mine design open pit design geological and excavation engineering and in advanced open pit mine planning ... As a handbook for any aspiring mining engineer there is no doubt that this is a very valuable estimating mining factors dilution and ore loss in open, open pit mine planning and design two volume set amp cd rom, surface mining methods ...

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Optimized open pit mine design, pushbacks and the gap ...

the time of pushback design is proposed, which can lead to mine designs with increased NPV. Keywords: Pushback design, open pit optimization, cardinality constrained graph closure. DOI: 10.1134/S1062739114030132 INTRODUCTION Open pit mine design and long-term production scheduling is a critically important part of mining ventures.

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Mining | Mining Engineering | Minig Process | Mining ...

The stripping method usually includes the positioning of open trench, advancing direction, and the arrangement and factors of working face. It impacts both the production technologies and economic benefits in the initial stage. Open pit mining usually covers the whole boundaries.

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An investigation into the parameters that affect the swell ...

design and reported volumes for different parts of the mining process and cast blasting methods at various locations around Callide mine. The Callide coal mine along with most mines worldwide have been using a swell factor as a variable in open cut mine design and volume removed calculations throughout history.

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GEOTECHNICAL CONSIDERATIONS IN OPEN PIT MINES

practice in open pit mines. The application of sound geotechnical engineering practice is considered to be an integral component of Part 2 of the Mines Safety and Inspection Act 1994 (MSIA). It is emphasised that this guideline is not totally inclusive of all factors concerning the application of geotechnical engineering in open pit mining.

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Planning Considerations For Transition From Open Pit To ...

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. The main factors and activities that need to be taken into account in the planning cycle are as follows: Definition of the ore body.

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Development of a mine dewatering and pit slope ...

Most large open pit mines eventually require some form of proactive depressurisation in order to support desired Factor of Safety (FoS) for the inter-ramp and overall slope design angles. The impact of groundwater on pit wall stability and the role of pore pressure on slope design …

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Geotechnical considerations for the stability of open pit ...

Open Pit Slope Design' (Read & Stacey 2009), are addressed in Chapter 14: Open Pit Closure (van Zyl 2009). The chapter outlines the following typical steps in developing an open pit closure plan: • Develop closure goals and criteria, with local community and other stakeholder engagement.

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Open-Pit Mining Methods

The stripping-ore ratio is a basic factor used for determining whether to employ open-pit or underground methods and for determining the economic limits of open-pit mining. Other factors influencing the choice between open-pit and underground methods may be inferred from the advantages and disadvantages of open-pit mining, some of which are ...

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Guidelines and considerations for open pit designers - Deswik

The design is controlled by the engineer doing the design. Your company may have a haul road/pit design manual – use it if it exists. For those that do not have a design manual, or only have limited guidelines, then this article may help you in the process of designing your first pit. The end-purpose of your pit design will likely be:

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An Open Pit Design Model - SAIMM

An Open Pit Design Model By R. H. ROBlNSON nod N. B. PRENN SYNOPSIS The model described is a design and economic planning tool for analyzing surface mineral deposHs. Mineralization, topography, costs and significant goologic feature.'! are input to the model. The results are: (i) final p it li mts yielding the aximum 10la1 profil,

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DETERMINATION OF ULTIMATE PIT LIMITS IN OPEN MINES …

Abstract: Planning and design procedure of an open pit mining project just can be started after ultimate pit determination. In the carried out study in this paper it was shown that the most important factor in ultimate pit determination and in consequence in the whole planning and design procedure of an open pit mine is the metal price.

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Methodology for a dump design optimization in large …

In large-scale open pit mines, the mining process is rather complex and often involves different run-of-mine (ROM) ore and waste material treatment downstream. Appropriate areas to place these large amounts of material are limited and their selection and design must serve the environmental factors and economic goals of the long-term mine plans.

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Open-Pit Mine Planning and Design

of Open Pit Mine Planning and Design starting at the geological resource model, through to the reserve statement and including all aspects of the value chain. This unique course enables you to learn the basic theory of open pit mine design and the application thereof, whilst having the chance to interact with experts in the field.

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