Whittle Consulting are the recognised experts in mining consultancy. The combination of Whittle mine planning expertise, mining optimisation experience and the Whittle proprietary mine software, Prober-E, has repeatedly proven to enhance feasibility studies and mine valuations from 5% to 35%, for both underground mines and open pit mines.

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. The optimization of long-term planning deals with the maximization of cash flows, typically

which was unusable in practice until a practical optimization program called Whittle Three-D was developed by Jeff Whittle of Whittle Programming Pty Ltd in the mid-1980s. Two methods to the solution of open pit optimization were detailed by Lerchs and Grossmann, being a Graph Theory algorithm, which is a heuristic approach, and a

user-manual-for-gemcom-whittle 1/5 Downloaded from eccsales.honeywell.com on September 28, 2021 by guest ... mine-planning optimization and the optimization of mining complexes. Elaborating on the state of the art in ... case study of open-pit mining operations throughout the book to understand the

APCOM Proceedings - London, UK, !998, provides great opportunities for increased returns on pp. 651-662. large amount of capital being invested on these Whittle, J., 1999, "A Decade of Open Pit Mine Planning and Optimization -The Craft of Turning Algorithms into projects.

Sep 13, 2017· Fig 4. Pit shells created using Mining Direction and pit stages adjusted using Mining Width tool. This option is particularly useful for bulk commodities when no practical staging can be created using revenue factors. Figure 5 illustrates such an example of pit optimization for a homogenous shallow orebody, when pit size is not incremental to ...

The Facts and Fallacies of Open Pit Optimization, 1989 (Whittle Programming Pty Ltd: North Balwyn, Victoria). Whittle, J., Beyond optimization in open pit design, in Proceedings of the First Canadian Conference on Computer Applications in the Mineral Industry, 1998, pp. 331 – 337.

• Whittle Lab09 – Final pit with grade uncertainty. Module 7: Multi-Mine Multi-Process Optimization • Introduction multi-mine multi-process optimization • Whittle Lab10 – Iron Ore Multi-Mine Project o Merging multiple block models in one project o …

Abstract: The delineation of mining boundary is the basis of open-pit mining design,the results of boundary optimization directly restrict the overall development benefits of the mine.Due to a series of non-linear dynamic problems such as complex and changeable geological rock mass,disordered grade distribution and changeable economic parameters are existed in the …

Whittle Four-D optimization Whittle Four-D optimization was performed on the K001 and K002 kimberlites to determine ... Open Pit and Surface Mining, Aug. 2001. Split shell open pit design concept applied at De Beers Venetia Mine, South Africa pursuit of better returns, mine design criteria and philosophies were investigated.

Sep 06, 2018· SimSched DBS is a plugin software that uses innovative technology for Direct Block Scheduling in open pit mining. SimSched aims to maximize the Net Present Value (NPV) of a project deciding, based on an imported block model, which blocks will be mined, when, and to which destination they must be sent.

Whittle comprises a number of modules that focus primarily on pit optimization and strategic mine scheduling. For the Study, only the modules associated with pit optimization were utilized – the Core and Multi-Element modules. Whittle determines the optimal shape for an open pit in three dimensions through implementation of the

Jun 03, 2015· 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. Normally when optimization is done, a range of ...

Keywords: open pit, design, optimization, computer software Whittle and Gemcom * Mining and Metallurgy Institute Bor, [email protected] ** COMSAR ENERGY Republika Srpska d.o.o. *** This work is the result of the Project TR37001 "The Impact of Mining Waste from RTB Bor on the Pollution of Surrounding Water Systems with the Proposal of Measures ...

Whittle 3D determined, with mathematical precision, the optimal shape for an open pit mine, and could show the point at which it was more economic to proceed to an underground mine. In 1987 Whittle 4D was released incorporating time, risk and optimizing around NPV.

Jul 11, 2017· Whittle J (1999) A decade of open pit mine planning and optimization—the craft of turning algorithms into packages. In: Proceeding of 28th computer applications in the mineral industries, pp 15–24. Zagayevskiy Y, Deutsch CV (2016) Multivariate geostatistical grid-free simulation of natural phenomena. Math Geosci 48(8):891–920

The mine planning process for an open-pit diamond mining operation Overhead costs Overhead (fixed) costs for Letseng mine mainly include senior management salaries, costs associated with running the mine site, and administration staff and offices costs. Overhead costs are expressed as time-related costs in Whittle.

Jul 18, 2017· 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 LG, it is now the industry standard for pit optimization.

Our rigorous mine planning methodology focuses on pit optimization relative to grade cut-off strategy, economic mining depth, and size and scale of operation. The result is a life-of-mine plan and technical-economic model for your mineral resource. Our expertise ensures that appropriate project development decisions are made to advance projects ...

Feb 20, 2019· Mathematical optimization models and case studies for long-term open pit mine planning will be presented. Blending problem formulations are setup and solved in Excel Solver. The course complements theory with comprehensive instructions and hands-on experience completing a project and two exercises using the GEOVIA Whittle strategic mine ...

Whittle, J. (1989) The Facts and Fallacies of Open Pit Optimization. Whittle Programming Pty., Ltd., Victoria. has been cited by the following article: TITLE: RETRACTED: Compare Methods of Fix Lead, Milawa NPV and Milawa Balance Algorithm in Optimizing the Production of Open Pit Mines with Whittel Software

Figure 7 The final open pit contour (revenue factor 98%): a –contour in Whittle; b –contour in NPVS Defining the Mining Schedule Noticeable difference in the application of these two programs is in the procedure of determining the mining schedule. Determining the mining schedule in Whittle implies the mining and ore pro-cessing limit.

May 27, 2019· Lerch-Grossman is the name of a modeling approach for solving open-pit optimization. It was developed in 1965 and implemented in the 1980's by Jeff Whittle. The algorithm uses block dependencies to determine which blocks must be mined out as a group (i.e. if you mine G you must mine B, C, and D). The graphical relationship between blocks is ...

Oct 01, 2020· A discussion of Deswik Pseudoflow Pit Optimization in comparison to Whittle LG Pit Optimization. The purpose of this paper is to inform the user about Deswik Pseudoflow, within the context of the mining industry's most accepted pit optimization process that uses Whittle software based on the Lerchs-Grossman (LG) algorithm.

Optimization of Open Pit Mining under Surpac and Whittle - Application to the Ruashi II and III Deposits ... With the whittle software, a second optimization procedure was carried out on an economic level, taking into account separately these three projects constituted. After several techno-economic analyses, the optimum pit of the second project

Pit optimization is the vital first step in unlocking the full economic potential of your open pit operation. Beyond that though, Whittle provides a complete and integrated suite of tools for mining value chain optimization, tools which enable significant increases in project value over and above pit optimization.

While some mining software such as Mintec (2013) and MineMax (2016) have tried to consider the stockpile as part of open pit mine scheduling, such software does not guarantee global optimal solutions. Whittle, one of the leading pieces of software in mine planning, has a stockpiling module and considers mixing material with different grades in ...

whittle optimisations Whittle software is used to determine and optimise the economics of open pit mining projects. Its unique capabilities enable us to analyse pit designs in the context of all physical, economic and mining constraints, allowing significant value to be added to operations. (ref: Gemcom website) The Whittle software package is currently considered as the premier […]

MINP 101: Strategic Mine Plannimng and Optimization - Geovia Whittle Core. Srategic mine planning optimization process is the backbone of mining operations. In mining projects, deviations from optimal mine plans will result in significant financial losses, future financial liabilities, delayed reclamation, and resource sterilization.

Open Pit Optimization - Strategies for Improving Economics of Mining Projects Through Mine Planning K.Dagdelen Mining Engineering Department, Colorado School of Mines. Golden, Colorado, USA ABSTRACT: The open pit design and scheduling problem is a large-scale optimization problem that has

File Type PDF User Manual For Gemcom Whittle ... Integer Programming and Combinatorial Optimization Mine Planning and Equipment Selection ... This book broadly explains the requirement to focus on core components in a business and provides a case study of open-pit mining operations throughout the book to understand the management perspective of ...

Nov 04, 2020· The moment in which the optimization is carried out is very important to maximize the value, because of the impact of the discount rate on it. Regarding maximization of the NPV, some of the key decisions about the exploitation of an open pit deposit are the starting point and the orientation of the mining sequence.

Apr 28, 2015· Presented by Amin Mousavi at Queensland University of Technology, Australia on 15 Apr 2015.Abstract: An important stage in open pit mining is to determine t...