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Sound Power Level Study of a Roof Bolter
By R. J. Matetic, J. S. Peterson, P. G. Kovalchik
The National Institute for Occupational Safety and Health (NIOSH) has initiated a study of a roof bolter to reduce noise exposure to mine roof-bolter operators. An important segment of this research e
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Quantifying Stable Hangingwall Spans Between Support Units
The current methodology to design stope support systems in South African gold and platinum mines is based upon the tributary area concept. The discontinuous nature of the hangingwall rock is not adequ
Jan 1, 2000
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A Study Of The Influence Of Copper On The Gold Electrowinning Process
Paper written on project work carried out in partial fulfilment of B. Eng (Metallurgical Engineering) degree Electrowinning is an attractive method to recover gold from the relatively concentrated
Jan 1, 2004
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Lessons from the S11D Truckless Mining Project
By T Atchison
The Vale Ferro Carajßs S11D project in northern Brazil is based on the movement of unprecedented volumes of waste and ore for mobile in-pit crushing and conveying or ætrucklessÆ systems. In peak years
Aug 12, 2013
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Beyond Rock Mass Characterisation – the Impact of Geology on Block Cave Mining
By A Webster, T Murphy
Block cave mining, in its broadest sense, has transitioned from an orebody/rock mass determined method of extraction, to a low-cost and high production mining method that may be applied to any large o
May 9, 2016
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Blast Assessment and Optimization with Respect to the Control of Environmental Effects
By Frank Sames
The control of the environmental effects, especially blast vibration and airblast, has become a dominating planning criterion for most surface blasting operations. Compliance with existing regulations
Jan 1, 1997
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Evaluation Of Mine Seals Using Ground Penetrating Radar
By Michael J. Sapko, William D. Monaghan, Michael A. Trevits
Mine seals are used extensively in underground coal mines to segregate mined-out areas and to isolate fire zones or underground areas that are susceptible to spontaneous combustion. Over the years, 3
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Dynamic hydraulic shovel simulator for improved machine performance
By S. Frimpong
Hydraulic shovels are widely used for primary production in surface mining operations. Variability in material diggability, unstructured mining environments and limited space and operator inefficiency
Jan 1, 2005
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Relationship Between Floor Rock Stress And Floor Failure
By X. S. Tan
This paper deals with the analysis of stress condition on the interface between two types of floor rock materials when the vertical stress is larger, or when the horizontal stress is larger in a recta
Jan 1, 1990
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Supporting Method of the Bolted Strata in Large Deformation Roadways
By Shuangsuo Yang
Based on field observations and physical modeling of simulated materials, the dynamic equilibrium principle on the whole interaction process between the surrounding rocks and support of large deformat
Jan 1, 2005
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Construction Of Explosion Resistant Seals – Preprint 97-83
By C. R. Stephan
Explosion-resistant seals in underground coal mines isolate the environment within the sealed area from the active workings of the mine. The current United States Title 30 Code of Federal Regulations
Feb 24, 1997
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Professional Project Management in Mine Construction
By F. G. Crack, R. V. Ramani, R. L. Frantz
Management for mine construction and development differs from that needed for routine mine production and maintenance. An integrated approach to managing mine development projects must consider contra
Jan 7, 1982
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Selective Copper Recovery with HCl Leaching from Copper Oxalate Material Mining, Metallurgy and Exploration (d35b21fb-0dcb-4cd4-94b9-4575e3b19bb0)
By Hasan Nizamoğlu, Z. Abidin Sarı, Aslıhan Demiraslan, M. Deniz Turan, Tolga Depci
In this study, recovery of copper from solid material (obtained by leaching of chalcopyrite with oxalic acid in the presence of hydrogen peroxide) with a copper oxalate structure was carried out selec
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Value Engineering – Design Risk and Reward at Major Sport Arena Projects
By Peter Faust, Jeremy Zorne, Timothy Siegel, Diane Fiorelli
Professional sport venue construction follows a very simple rule. Once the decision has been made to move the team to a new place, construction shall begin immediately, so that not more than one or tw
Jan 1, 2018
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Reduction of Pelletized Australian Iron Ores
Hydrogen and carbon monoxide reduction data were obtained on pelletized materials of the type currently being prepared commercially in Australia.Pellets, approximately 1 cm diameter, made from Deepdal
Jan 1, 1971
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An Overview Of Augered, Cast In Place Piles In Florida - Introduction
By Kirk A. Mcintosh
Augered, cast-in-place (ACIP) piles have been utilized in the United States for a wide range of projects since the 1950's. Due to the cast-in-place nature of the installation method (and lack of
Jan 1, 1997
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Reinforcement of Existing Deep Foundations with Micropiles
By Mauricio Terceros, Martin Achmus, Freddy Lopez
The massive use of deep foundations had a remarkable influence in the building industry in the 20th century. Piles and micropiles made possible to erect thousands of civil structures around the world,
Jan 1, 2018
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Extractive Metallurgy Division - Stoichiometry of Lead Telluride
By I. Cadoff, E. Miller, K. Komarek
Jan 1, 1960
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Some Experience With Large Diameter Caissons ? Synopsis
By I. H. Wong
The large diameter caisson foundations and their construction methods for three 50 to 60 storey high buildings in Singapore are described. The caissons are 5 m to 8 m in diameter and 40 m to 100 m dee
Jan 1, 2010
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Mine Stability Evaluation From Microseismic Activity (5cc6a13d-fd4e-4c74-a7d1-2213b7f2a1da)
By Brian R. A. Wood
Any defect activity resulting from an applied stimulus on a structure will generate a stress wave which travels in the medium under the laws of acoustics, thus the name of acoustic emission (AE). AE t
Jan 1, 1992