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Designing And Managing Unpaved Opencast Mine Haul Roads For Optimum Performance (SME Annual Meeting March 1-3, 1999, Denver, Colorado)By A. T. Visser
The expansion of surface mining has led to the development of very large off-highway trucks currently capable of hauling payloads in excess of 290t. Mine haul roads have historically been designed emp
Jan 1, 1999
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GERT Models For The Development Of Open-Pit Gold Mines In Saudi ArabiaBy M. H. Al-Dabbagh
In this paper, the authors outline the deficiencies of PERT/CPM as a method for scheduling complex projects such as mine development. In particular, PERT/CPM networks cannot accommodate logical nodes
Jan 1, 2002
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Novel Flotation Technology - A Survey of Equipment and ProcessesBy Kenneth J. Miller
Froth flotation is one of the most actively pursued research and development areas in the coal preparation industry today. Many new types of flotation machines and processes are being developed and co
Jan 1, 1988
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Analysis Of Truck Dispatching Strategies Forsurface Mining Operations Using SIMANBy B. Kolonja
A SIMAN and CINEMA PC-based simulation model was developed to simulate and animate the truck-shovel operations of surface mines. The model is capable of simulating one mathematical dispatching strateg
Jan 1, 1993
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Methods And Trends In Protecting The Historical Chambers In Wieliczka Monumental Salt MineBy R. Debkowski
Mining methods used to protect the workings in underground salt mines against the destructive activity of natural factors are presented in this paper. Major hazards and methods of elimination of their
Jan 1, 2006
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The Relationship Of Roof Movement And Strata-Induced Microseismic Emissions To Roof Falls (43602871-ab04-4ff3-95cd-95d1c33374f0)By J. Litsenberger, T. E. Marshall, P. R. Coyle, L. J. Prosser, A. T. Iannacchione
For the first time in an underground stone mine, the relationship between roof movement and microseismic emissions was examined in conjunction with two distinct roof fall areas. As roof monitoring inc
Jan 1, 2004
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In situ leaching of disseminated gold deposits - geological factorsBy J. G. Wargo
In situ leaching of disseminate gold deposits has been studied from a theoretical perspective to outline the operating environment for the process. Rock permeability and the relationship of permeabili
Jan 1, 1987
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Inelastic Deformations of Fault and Shear Zones in Granitic RockBy D. C. Wilder
Deformations during heating and cooling of three drifts in granitic rock were influenced by the presence of faults and shear zones. Thermal deformations were significantly larger in sheared and faulte
Jan 1, 1986
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Development of Non-Destructive Inspection Method for Concrete Elements in Tunnel Linings Using Remote Laser SensingBy Yoshinori Shimada, Oleg Kotiaev, Hiroaki Sakamoto, Toshihiro Asakura, Naotoshi Yasuda, Norikazu Misaki, Masahiro Shinoda
"To ensure that trains run safely, the performance of railway civil engineering structures is checked by periodic inspections. General inspection method has merits and demerits, but none of them offer
Jan 1, 2016
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Detection And Characterization Of Nanoparticles In Respirable Coal Mine Dust - SME Annual Meeting 2022By F. Sime, X. Wang, J. D. Miller, T. Akinseye, S. Assemi, L. Pan
Respirable coal mine dust (RCMD) is a complex mixture of carbonaceous and mineral particles with a variation in size and shape. Accumulation of RCMD in the lungs of underground coal miners results in
Mar 2, 2022
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Benefits and Costs of Environmental Compliance: A SurveyBy Bonn J. Macy, David A. Gulley, William A. Vogely
INTRODUCTION Some of the most famous and graphic environmental incidents have arisen from mineral extraction, including oil spills, the Reserve Mining asbestos tailings case, Kaiparowitts surface
Jan 1, 1985
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A Comparison Of Analytical Models For Diffusional Deposition Of Radon Daughters In A Human Ling BifurcationBy Antoon W. van der Vooren, Colin R. Phillips
A comparison of analytical models used to describe deposition in the first generation of lung bifurcations is presented. In order to allow testing of the mathematical models, experimental data were ob
Jan 1, 1981
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PC-Based Worker-Scheduling System For Underground MinesBy S. O. Yuan, R. L. Grayson
As a followup to a USBM-sponsored research project, the authors utilized the knowledge-base structure and system concepts from a Sun Sparcstation-based worker-scheduling system of the mine-management
Jan 1, 1998
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Use Of An Analytical Solution For Preliminary Estimates Of Ground Water Inflow To A PitBy L. C. Atkinson, E. A. Azrag, T. M. Hanna
The results of using a simple analytical solution and a relatively complex numerical model to estimate ground water inflow to an open pit mine are compared. The analytical solution assumes lateral, ra
Jan 1, 1995
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On-Line Data Reconciliation By Minimization Of A Weighted Sum Of Squared Residuals And Node ImbalancesBy Daniel Hodouin, Claude Bazin, Sami Makni
A method is proposed to perform on-line data adjustment and inference of unmeasured variables, using measured flowrates and on-stream assays in mineral processing plants. The algorithm minimizes a wei
Jan 1, 1995
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Modified version of the Geomechanics Classification for entry design in underground coal minesBy Z. T. Bieniawski, D. A. Newman
The Geomechanics Classijication (RMR System) (Bieniawski, 1979) was modified for entry and roof support design in underground coal mines. Adjustment multipliers were introduced to incorporate the infl
Jan 1, 1987
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Kinetics of cathodic decomposition of pyrrhotite and chalcopyrite in deoxygenated solutionsBy I. Iwasaki, K. A. Smith, X. Cheng
A cathodic decomposition model was examined for both pyrrhotite and chalcopyrite in an attempt to analyze the formation of surface coatings in deoxygenated solutions at natural, near neutral pH. Combi
Jan 1, 1999
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Evaluation Of A Mine Panel Failure Using The Local Mine Stiffness Criterion - A Case StudyBy K. Morsy, S. S. Peng
A new method of pillar stability evaluation was proposed. The unique feature about the method is that it estimates two types of stability factors for the pillar. The first stability factor is to measu
Jan 1, 2003
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Determining The Effect Of Physico-Chemical Parameters On Floc Size Using A Population Balance ModelBy S. K. Sharma, D. A. Stanley
The US Bureau of Mines is investigating the fundamentals of the flocculation process. The objective of this study was to determine the effects of various physico-chemical parameters, namely, shear rat
Jan 1, 1995
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Decrepitation Of Calcined Abrasive Grade Bauxite, Moengo, SurinameBy S. C. Libby
The amount of fine material (minus 60 Tyler mesh) generated during calcination and/or handling of calcined abrasive grade bauxite from Alcoa's operations at Moengo, Suriname, has recently increas
Jan 1, 1980