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Q-coda estimation in the Kaapvaal Craton
By D. Grobbelaar, A. Cichowicz, D. J. Birch
The Q-coda method for estimating the quality factor Q(f)= Qo(f)n was used to characterize seismic wave attenuation in a region of the Kaapvaal Craton that includes the mining areas of the Bushveld Com
Jan 1, 2015
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Case Study in Rock Mass Behavior: TBM versus Drill and Blast
By Scott Chesman
Increased TBM performance is leading the way for resurgence in tunneling activity in NYC. Tunnels will be excavated in the same geologic formations as previously excavated D&B tunnels whose constructi
Jan 1, 2005
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Towards A Comprehensive Mathematical Model Of The Blast Furnace
By M. Cross
INTRODUCTION The results of the Japanese dissective investigations have [l-4] transformed our understanding of how the blast furnace operates. These studies revealed an internal structure of the fu
Jan 1, 1984
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Regional geochemical mapping for earth science and environmental studies
By R. B. Barlow, J. A. C. Fortescue
Originally developed for use in mineral exploration, regional geochemical mapping based on stream (and lake) sediment sampling is showing broader application in other areas of the earth sciences and i
Jan 1, 1980
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The Process Design Of Gold Leaching And Carbon-In-Pulp Circuits - Introduction
Assuming that a gold ore has been effectively ground to ensure maximum economic liberation of gold, the circuits that will have the most effect on the successful operation of a gold plant will be that
Jan 1, 1999
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RI 6669 Low-Temperature Heat Capacities And Entropies At 298.15°K Of Anhydrous Sulfates Of Cobalt, Copper, Nickel, And Zinc
By W. W. Weller
Heat capacity measurements of anhydrous cobalt sulfate (CoSO4), copper sulfate (CuSO4), nickel sulfate (NiSO4), and zinc sulfate (ZnSO4) were conducted over the temperature range 51° to 298° K. The re
Jan 1, 1965
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IC 9490 - Job Training Analysis: A Process For Quickly Developing A Roadmap For Teaching And Evaluating Job Skills
By James M. Baugher, Donald W. Conrad, William J. Wiehagen
This report describes a process for quickly developing information that is useful for skills training. The process is called job training analysis (JTA). Its main use is to structure skills training
Jan 8, 2006
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RI 7732 Removing Pyrite From Coal By Dry-Separation Methods
By W. T. Abel
The difficulties associated with wet-processing fine size coal led the Bureau of Mines to investigate a dry process for removing pyrite from coal pulverized to powerplant fineness. The dry process tha
Jan 1, 1973
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The development and future of BHP Billiton’s Western Australian iron ore geological reconciliation system
By S J. Loach
Geological reconciliation is an indispensable part of BHP Billiton’s Western Australian Iron Ore (WAIO) operations. Since 2009 our reconciliations have been calculated in a single, centralised sequel-
Jul 24, 2017
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Doing It All: Cut, Crush, And Load With One Machine Wirtgen Surface Miner
By D. van der Veen
Mining companies and contractors are looking at Wirtgen Surface Miners to provide flexibility at their operations. Wirtgen Surface Miners have been used in the surface mining industry for over fifteen
Jan 1, 2002
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RI 9654 - Proceedings Of The Second International Workshop On Coal Pillar Mechanics And Design
By Todd M. Ruff
This report summarizes ongoing research at the National Institute for Occupational Safety and Health, Spokane Research Laboratory, in which collision warning systems for surface mining dump trucks are
Jan 11, 2000
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The Flotation of Rare Earths - A Contribution to Industrial Hygiene
By C T. Hollick
Conventional processing of heavy mineral deposits containing radioactive rare earth minerals such as monazite and xenotime may cause industrial hygiene problems through atmospheric dust and contaminat
Jan 1, 1990
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CSM-USBM Rotary Cutting Machine: Research Capabilities And Trials For Improving The Performance Of Tunnel, Shaft And Raise Boring Machines
By Levent Ozdemir, Robert J. Evans, Russell J. Miller, William Sharp
This paper describes the specifications and capabilities of a 6 ft (1.83 m) diameter laboratory rotary cutting machine which was designed and fabricated under a Bureau of Mines (USBM) contract awarded
Jan 1, 1983
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Ore Selection Optimisation for an Iron Ore Deposit Using Linear Programming
By M Aros, L Reilly
Iron ore is normally sold in bulk at certain specifications. These include iron grade and specific contaminant grades, typically silica, alumina, phosphorous and sulfur. These target grades are normal
Nov 24, 2014
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Application of Thermal Fragmentation in Australian Hard Rock Underground Narrow-Vein Mining Mining, Metallurgy and Exploration (1e34d89c-0565-45bf-a22d-0191b2dfefff)
By Larissa Koroznikova, Steve Durkin, Bradley Drake, Michael Tuck
This paper presents the results from the investigation of the application of thermal fragmentation in Australian hard rock underground narrow-vein mining. Two geologically similar samples from an unde
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Application of Thermal Fragmentation in Australian Hard Rock Underground Narrow-Vein Mining Mining, Metallurgy and Exploration
By Larissa Koroznikova, Steve Durkin, Bradley Drake, Michael Tuck
This paper presents the results from the investigation of the application of thermal fragmentation in Australian hard rock underground narrow-vein mining. Two geologically similar samples from an unde
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Some Notes on Notch Brittleness and Brittle Fractures in Mild Steel
Since the end of World War n, many important developments have taken place in the investigation of the phenomenon of brittle fracture in mild steel. Fractures in certain classes of welded ships, in we
Jan 1, 1954
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Mining discrete-event simulation projects: A chronological, comprehensive review from 2008 to 2015 - SME Transactions 2018
By L. O’Connor, E. Tarshizi
The objective of this work is to provide a detailed review and a list of references in chronological order, comprising 80 recent technical papers, on the use of discrete-event simulation (DES) modelin
Jan 1, 2018
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Mining discrete-event simulation projects: A chronological, comprehensive review from 2008 to 2015 - SME Transactions 2017
By L. O’Connor, E. Tarshizi
The objective of this work is to provide a detailed review and a list of references in chronological order, comprising 80 recent technical papers, on the use of discrete-event simulation (DES) modelin
Jan 1, 2017
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Development in Utility Tunnelling in the United Kingdom During the Years 1990–2000
By Andy Mille
The paper highlights development of tunneling methodology in the UK during the years 1990-2000 using the example of two major tunneling contracts where there solution of difficult tunneling problems d
Jan 1, 2001