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Numerical Computation Of Average Pillar Stress And Implications For Pillar Design - Synopsis
A number of issues relating to the computational aspects of pillar design are addressed in this paper. The computation of average pillar stress values is important when attempting to establish criteri
Jan 1, 2011
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Review Of Mud Rush Mitigation On Kimberley?s Old Scraper Drift Block Caves
By A. Holder
A major mud push occurred on the 870 m production level, scraper drift block cave at Dutoitspan diamond mine in November 2011, during which it is estimated that more than 4 400 m3 of mud engulfed the
Jul 1, 2013
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Effect of titanium content on solidification structure of ferritic stainless steel gas–tungsten and gas–metal arc welds
By L. S. Linda, P. G. H Pistorius
Ferritic stainless steel is utilized to fabricate automotive exhaust systems using a ferritic weld metal. Ductility of the weld metal is higher if its microstructure contains a significant proportion
Jul 2, 2022
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Flotation flowsheet for eliminating pyrite in tailings: a cleaner production solution, Y.L. Botero, L.A. Cisternas, L. Cortes, and A. Lopez-Valdivieso
By L. A. Cisternas, A. Lopez-Valdivieso, Y. L. Botero, L. Cortes
In the processing of sulfidic ores, pyrite is usually depressed and ends up in the tailings. However, pyrite is the most common species responsible for acid mine drainage (AMD) due to its spontaneous
Jan 1, 2020
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Synthesis of 2-(tert-butoxy)ethyl xanthate and its thionocarbamate derivative and their flotation performance, to chalcopyrite Q. Lin, S. Wang, and H. Zhong
By H. Zhong, S. Wang, Q. Lin
To improve the flotation performance of chalcopyrite collector, 2-(tert-butoxy)ethyl xanthate (TBEX) and its derivative O-(2-(tert-butoxy)ethyl)-N-ethyl-thionocarbamate (TBEETC) were designed and prep
Jan 1, 2020
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An Analysis of the True Rate of Return Project Evaluation Criterion
By M. M. Hajdasinski
The internal rate of return (IRR) is one of the most popular project evaluation criteria in the mineral industry, as well as in other industrial sectors. Analysis of its assumptions reveals, however,
Jan 1, 1987
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Numerical simulation of large-scale pillarlayouts
By D. F. Malan, J. A. L. Napier
A number of shallow coal or hard rock mines employ pillar mining systems as a strategy for roof failure control. In certain platinum mine layouts, pillars are designed to ‘crush’ in a stable manner as
May 3, 2023
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The computational analysis of shallow depth tabular mining problems - Synopsis
By J. A. L. Napier
The evaluation of stress distributions and deformations in the vicinity of tabular mine layouts has been carried out routinely for many years using the displacement discontinuity boundary element meth
Jan 1, 2007
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An Open Pit Design Model
By N. B. Prenn, R. H. Robinson
"The model described is a design and economic planning tool for analyzing surface mineral deposits. Mineralization, topography, costs and significant geologic features are input to the model. The resu
Jan 1, 2014
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The quantification of cyanide and its reaction products during leaching and cyanide destruction processes
One of the key issues facing gold producers is the management of cyanide and the implementation of the International Cyanide Management Code. Many operations now use cyanide destruction processes to e
Jan 1, 2009
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Influence of ground motion model selection on seismic hazard for Johannesburg
By R. J. Durrheim, B. Manzunzu, V. Midzi
Selecting ground motion prediction models (GMPM) is crucial in assessing seismic hazard levels in a specific region. This study investigates the influence of ground motion model (GMM) selection on sei
Jan 12, 2025
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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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A technique for estimating the sound power level radiated by pneumatic rock drills and the evaluation of a CSIR prototype rock drill with engineering noise controls - Synopsis
By P. G. Kovalchik
Overexposure to noise remains a widespread, serious health hazard in the US mining and other industries despite 25 years of regulation. Most categories of illnesses and injuries associated with mining
Jan 1, 2009
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Characterization of additively manufactured AlSi10Mg cubes with different porosities
By H. Möller, M. Tshibalanganda, C. Taute, A. du Plessis, M. Leary
Additive manufacturing can be used to produce complex and custom geometries, consolidating different parts into one, which in turn reduces the required number of assemblies and allows distributed manu
Apr 1, 2021
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Ground Control At Leinster Nickel Operations
By J Cahill, M Lee
Leinster Nickel Operations, located in Western Australia, consists of an underground and three open pit mines in relatively adverse ground conditions. This paper reviews our ground control practices i
Jan 1, 2006
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Recovery of lithium from spodumene by chlorination roasting, P.F.A. Braga, S.C.A. França, C.P. Pinto, and G.D. Rosales
By G. D. Rosales, P. F. A. Braga, S. C. A. França, C. P. Pinto
The growing market demand for lithium is mainly due to its use in the manufacture of batteries for electric or hybrid vehicles and portable equipment (smartphones, tablets, power tools, notebooks, etc
Jan 1, 2020
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Case Study On Quantitative Risk Modelling To Obtain A Realistic Risk-Adjusted Project Valuation
By G. R. Lane
A large opencast gold mining company in Africa had just completed a feasibility study for the expansion of the operations. A traditional net present value project valuation methodology had been used t
Jan 1, 2012
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Low Cost Ferroalloy Extraction In DC-Arc Furnace At Middleburg Ferrochrome - Synopsis
By D. Sager
Middleburg Ferrochrome (MFC), a company in Samancor Chrome, commissioned a new ferrochrome smelter in March 2009. This is a 60 MW DC-arc furnace with a DC power supply for the smelting of Transvaal ch
Jan 1, 2010
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Investigation of a conveyor belt fire in an underground coal mine: Experimental studies and CFD analysis
By C. O. Aksoy, G. G. U. Aksoy, A. Fisne, I. Alagoz, E. Kaya
Coal produced in underground mines is transported to the surface by means of conveyor belts throughout long roadways. The combustion of belts puts a large number of employees at great risk. Undergroun
Dec 13, 2023
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Applied Ergonomics For Operator Compartment Design In An EJC 88 XLP Loader
By N. D. L. Burger, S. Thorley
In engineering design of operators? compartments, in underground mining equipment, ergonomics principles are often neglected or not given the full recognition they deserve. This paper defines ergonomi
Jan 1, 2004