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The value of drilling - A chance-constrained optimization approach
By Michael Forbes, Rick Jeuken
The challenge of managing geological uncertainty in mine planning is central to optimizing resource extraction while minimizing risks and costs. This paper introduces a novel approach to coal mine pla
Jan 1, 2025
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Modelling unsaturated dual-phase flow through crushed ores for heap leaching
By J. Petersen, S. W. Robertson
Heap leaching is used extensively for the processing of low-grade copper, gold, and uranium ores. The hydrodynamics is often the most important factor that limits the rate of metal recovery. Over the
Dec 11, 2024
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Comparing the recovery of rare earth elements from ion-adsorption clay leach solutions using various precipitants
By J. Petersen, A. E. Lewis, J. Chivavava
Rare earth elements (REEs) have special properties that prompted their extensive use in high-tech applications. The demand for REE has, therefore, increased over the past years, resulting in the suppl
Dec 11, 2024
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Removal of iron from vanadium redox flow battery electrolyte using ion exchange
By K. C. Sole, M. Makonese
Bushveld Belco is commissioning a plant for production of electrolyte used in vanadium redox flow batteries. Owing to the source material, the electrolyte is contaminated with Fe, at concentrations up
Dec 11, 2024
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Analysis of raise boring with grouting as an optimal method for ore pass construction in incompetent rock mass - A case study
By Wedam Nyaaba, Edward Wellman, Angelina Anani, Eduardo Cordova, Sefiu O, Cluber Rojas, Adewuyi
This study aims to investigate the optimal method for ore pass construction in incompetent rock masses. We evaluated the conventional and raise boring methods based on safety, efficiency, excavation c
Dec 1, 2024
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A sustainable complexation leaching of critical metals from spent lithium-ion batteries by glycine in a neutral solution
By Jaeheon Lee, Junmo Ahn, Jiajia Wu
To reduce the environmental footprint of hydrometallurgical processing of black mass from spent lithium-ion batteries (LIBs), a green leaching system based on glycine and sodium metabisulfite (Gly-SMS
Dec 1, 2024
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Estimation of Fe grade at an ore deposit using extreme gradient boosting trees (XGBoost)
By Firat Atalay
Estimating the spatial distribution of ore grade is one of the most critical steps to proceed with an investment decision on a deposit. Kriging is the most widely used method to estimate the ore grade
Dec 1, 2024
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Investigating the effect of different loading scenarios on the performance of wheel loaders: A case study on Can Lignite Enterprises
By A. Çelik
Wheel loaders are widely used in many sectors due to their mobility, operational flexibility, and low costs. The literature is mainly focused on improving the hydraulic, mechanical, and electronic sub
Nov 27, 2024
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Re-evaluation of the PlatMine chromitite pillar strength database
By M. I. Mabala, B. P. Watson, M. J. Kanda
A failed and stable Upper Group 2 chromitite pillar database was collected in 2007 as part of the PlatMine 1.2 pillar strength project. The database consisted of 177 pillars, of which 33 had failed. M
Nov 27, 2024
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Pillar design and the associated mining engineering constraints in hard rock bord-and-pillar mines
By D. F. Malan, W. J. Theron
Practical mining aspects should be considered when conducting pillar designs for bord-and-pillar layouts. The current methodology for pillar design will result in increasing pillar sizes with depth. T
Nov 27, 2024
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Back analysis of LG6/LG6A chromitite pillar strength using displacementn discontinuity modelling
By D. F. Malan, P. J. Le Roux
Almost no work has been published on the strength of pillars in mines exploiting the LG6/LG6A chromitite bands in the Western Bushveld Complex. The strength of these pillars is unknown, and the hard r
Nov 27, 2024
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Rare Earth Extraction with Ionquest® 801 initial modelling development
By F. Dutoy, M. B. Stella, C. F. Carrozza
Rare earth elements (REEs) are indispensable components in the manufacturing of high-tech devices, renewable energy technologies, and defence applications. As global demand for these elements continue
Nov 6, 2024
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Rare Earth Elements enrichment in Triassic coals deposits and associated argillaceous rocks in Lesotho
By S. Hlajoane, L. S. Mokhahlane
The demand for rare earth elements has increased around the world due to their application in a variety of technological advancements. Previous studies have evaluated the potential of the rare earth e
Nov 6, 2024
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Development of a physical separation pre-concentration process for the extraction of Rare Earth bearing ore
By A. Singh, K. Bisaka, G. Marape, T. Mokgomola
This paper investigated the pre-concentration amenability of sovite (carbonatite) ore to enhance the grade of rare earth elements (REE) bearing minerals by rejecting calcite, and to improve total rare
Nov 6, 2024
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An assessment of Rare Earth Elements in borehole cores from the Ermelo, Witbank and Waterberg Coalfields, South Africa: Focus on mode of occurrence
By N. J. Wagner, D. G. Modiba
There is currently limited knowledge concerning South African coal deposits as hosts for rare earth elements (REE). This project aims to determine the concentration of REE, including yttrium and scand
Nov 6, 2024
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CIM Uranium Leading Practice Guidelines 2024
By CIM Mineral Resource
On January 9, 2018, the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) Council formed the CIM Mineral Resources and Mineral Reserves Committee (CIM MRMR Committee), which is a combinatio
Nov 1, 2024
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Behaviour of paddled energyabsorbing rockbolts under complex loading laboratory conditions
By J. Hadjigeorgiou, G. Knox
Since their introduction in 2010, paddled energy-absorbing rockbolts have been widely used in seismically active hard rock mines. This paper provides new data and reviews previous work to quantify the
Oct 9, 2024
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Presidential Address: Metallurgical slags: A drive to circularity and search for new research agenda
By E. Matinde
Poor phase separation and fine dissemination of the desired components within congruous slag phases are key challenges limiting the recoverability of values from slags by conventional beneficiation me
Oct 9, 2024
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Management Gaps in the Implementation of Legislation Regulating Derelict and Ownerless Mines in South Africa
By E. Kuipa, J. N. Lekunze
The selection of an underground mining method stems from a multivariate analysis that considers geomechanical, geological, economic, and operational parameters. Even after identifying the most compati
Oct 9, 2024
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Gaining Insights into Working within the Mining Sector
By Jeanie Wills, Theresa Nyabeze, Samantha Espley, Donna Beneteau
This presentation reports survey findings that aim to modernize the definition and understanding of the term 'mining.' The survey, conducted via LinkedIn in Winter 2024, garnered responses from a dive
Oct 1, 2024