how whittle pit optimisation works lerch
how whittle pit optimisation works lerch

lerchgrossman pit optimization

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how whittle pit optimisation works lerch 1 Lerch-Grossman pit optimization shell 2 Whittle pit optimization shell, for the pit optimization and economic assessment of the open pit portion of the Minago Cardero Reports NI 43-101 Resource Estimate for Zonia...

Strategic Open Pit Mine Planning Maximizing Pit Value ,

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Strategic Open Pit Mine Planning Maximizing Pit Value under Uncertainty Sabry A Sabour, PhD, PEng, Senior Mining Engineer , a combination of the Lerch-Grossman optimization of the commercial MineSight package and , capabilities include mine optimization and design using Whittle, MineSight, and Surpac, in ....

Pseudoflow, New Life for Lerchs

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implemented in commercial software eg Muir, Whittle and , works with nodes rather than sets of nodes and the excess at a , NEW LIFE FOR LERCHS-GROSSMANN PIT OPTIMISATION,...

Release Notes Whittle 471 Whittle Enhancements

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New Optimization Control options added to the Pit Shells node In the Pit Shells node, you can now control which algorithm, Pseudoflow or Lerchs-Grossman, is used to generate optimized pit shells...

Vulcan Module Descriptions for Version 802 Release

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After pit optimization is completed in Whittle, this module allows the import of Whittle 4X result files RES , Pit Optimizer Lerch-Grossman Single- , subregions and definition of pit limit polygons Pit Optimization using LG and FC are separate and independent saleable modul...

Gypsum Board And Gypsum Powder Production Line

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Author Eveuhq5 Stanleysub5 Gypsum Plate Production Line - herbalslim We are plant of Gypsum Board Production Line, Gypsum Powder Equipment, AAC Block Manufacturing Machine, Gypsum Stucco Machine read more...

Maximizing the net present value by applying an optimal ,

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Whittle et al 1995 proposed the use of opportunity costs in cut-off grade optimization in monometallic , algorithm for cut-off grade optimization for an open pit mine with multiple metals and stockpiles 13 , One of the first works that took into account the price uncertainty in cut-off grade optimization was presented by Krautkraemer ....

The Whittle 10 Step process

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The Whittle 10 Step process , It determines how much capital is worth spending on each constraint, simultaneously rebalancing the pit, phase, schedule, cut-off, stockpile, blending, processing, product mix and logistics to suit the specifics of each mining project or operation , Whittle optimisation study works wonders at Condor Gold ....

Case Studies In Open Pit Design Using Lerchs

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A comparison of methods in one large gold mine resulted in the stripping ratio of the pit being reduced by 10 in the Whittle 4D optimization as compared to the floating cone optimization 3 Pit optimization to determine if a new mill is justified...

Whittle Pit Optimisation Works Lerch

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Whittle Pit Optimisation Works Lerch A new algorithm for optimum open pit design JME Journal of Mining Environment, Vol2, No2, 2011, 118-125...

Integrated Strategic Planning

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The Whittle Enterprise Optimisation model is tailored for each site It determines how much capital is worth spending on each constraint, simultaneously rebalancing the pit, phase, schedule, cut-off, blending, stockpile, processing, product mix and logistics...

Alexey Tsoy to present at the MiningMath 2018 Creating ,

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The techniques are an attempt to solve limitations of the Lerch Grossmann LG algorithm that became an industry standard The algorithm designed in 1964-1965 is used to define economic viability of a pit by outlining the ultimate pit using economic and mining parameters...

OPEN PIT PRODUCTION SCHEDULING APPLYING META ,

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implementing the Lerchs-Grossman L-G algorithm1 Whittle 1999 the ultimate pit is obtained In the second step, the ultimate pit is sub-divided into a series of nested pits, or pushbacks by a different parameterization algorithm, Seymour 1995...

Pseudoflow, New Life for Lerchs

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100 Spectrum Series Volume 14 Orebody Modelling and Strategic Mine Planning PSEUDOFLOW, NEW LIFE FOR LERCHS-GROSSMANN PIT OPTIMISATION TABLE 1 TABLE 3 Optimisation times seconds to various pit levels for Optimisation times seconds to various pit ,...

Victory Nickel Increases Minago Pit

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The updated pit-constrained resource represents a potential open pit mine life of 86 years, an increase of 15 years of mine life based on a 10,000 tonne per day mining rate...

how whittle pit optimisation works lerch

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JORC compliant resource and scoping study report JORC compliant resource and scoping study report 4 April , However Whittle Pit Optimisation Software has been , Whittle computer software that uses the Lerch...

Open pit mining

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The method works by modelling the development of the mine as a sequence of pits states where each pit differs from the previous pit by the removal of one block state change A probability distribution based on the frequency with which particular states occur is used to determine the state chang , 39 J Whittle, Open Pit Optimization ....

Optimized Pit Design

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Optimized Pit Design This command uses the Lerchs-Grossmann Algorithm LGA to determine the optimized minable pit Determining the optimum ultimate pit of a mine is the base of mine planning...

Whittle Workbook Net Present Value Gold

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Pit Cut-off Optimisation Work Book Prepared by Norm Hanson Whittle Consulting Pty Ltd For University of Queensland Sept 2008 5 0 50 17Costs of a single truck load of ore in three example cases 15 g/t Gold Before you begin the calculation can you guess which is ,...

COMPARATIVE OPTIMIZATION OF MINING THE KRAKU ,

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Table 1 Input parameters for optimization in Whittle and NPVS Economic cut -off grade of copper 015 Cu Metal prices , Both softwares are based on the Lerch-Grossman optimization algorithm The es-sence of this algorithm is that, for a given , In Whittle, pit slope angle is approximated across a number of benches, while in the NPVS this is ....

Simultaneous Optimization Explained in GEOVIA Whittle ,

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When GEOVIA Whittle was initially released in 1984, it provided a new Lerchs-Grossmann LG algorithm for open pit shell optimization to replace the existing floating cone method While it took a number of years for the mining industry to become accustomed to ,...

using d lerchs and grossmann algorithm to design final pit

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lerch grossman open pit scheduling mtsexamin , 17 Open Pit Optimization Strategies for Improving , Lerchs and Grossmann algorithms instructions and hands-on experience completing a project using GEOVIA Whittle strategic mine planning Final pit in the...

SURFACE MINE PRODUCTION Helmut Lerchs and Ingo Grossmann

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These would include oil refinery scheduling , transportation allocation models , distribution warehousing and order processing , education class scheduling , and mining plant optimization, and open pit ,...

victory nickelminago

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how whittle pit optimisation works lerch Victory Nickel Minago 1 Lerch-Grossman pit optimization shell 2 Whittle pit optimization shell, for the pit optimization and economic assessment of the open pit nickel ore miner tripling production summary Victory Nickel Minago Base Case Economic Summary full-time jobs once production begins...

GEOVIA WHITTLE SIMULTANEOUS OPTIMIZATION

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The traditional pit-shell optimization Lerch-Grossman or Pseudoflow is still required to create the optimal pit shell Pit shells are mostly independent of the schedule and stockpiling, , GEOVIA Whittle Simultaneous Optimization 5 Figure 5 Dassault Systémes...

Determination of the Optimum Cutoff Grade Considering ,

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Cutoff grade optimization can improve both long-term and short-term cash- flows Cutoff grade optimization is used for simulation of mining/ processing/ stockpiling configurations to determine which configuration yields the maximum economic benefit...

Victory Nickel Increases Minago Pit

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May 02, 2011 0183 32 Victory Nickel Increases Minago Pit-Constrained Measured Indicated Resource by 24 Marketwire...

Optimising Project Value and Robustness

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Optimising Project Value and Robustness G Whittle1, W Stange2 and N Hanson3 ABSTRACT An important aspect of the project evaluation process is the achievement of a clear and quantitative understanding of the primary drivers...

Vendetta Increases Pegmont Lead

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AMC Consultants performed the open pit optimisation using the Lerch-Grossman algorithm coded into the Whittle software The open pit shell used to constrain the esource was based on a net Mineral R smelter return NSR cutoff of A 3242/t determined using the parameters defined above and the -...

JORC compliant resource and scoping study report

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Whittle computer software that uses the Lerch-Grossman algorithm, which is a 3-D algorithm that can be applied to the optimisation of open-pit mine designs The purpose of optimisation is to produce the most cost effective and most profitable open-pit design from a resource block model...