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Discussion - Interactive graphics for semivariogram modeling
M.S. Azun I have many objections to the content of the author's paper. Before discussing it, however, I would like to repeat the property of semivariogram function. Second order stationary
Jan 11, 1985
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Characteristics Of Attached Radon-222 Daughters Under Both Laboratory And Underground Uranium Mine Environments
By J. A. Cooper, M. R. Petersen, P. O. Jackson, J. C. Langford
The organic, inorganic, and radiological characteristics of airborne aerosols have been measured as a function of particle size in controlled atmosphere test chambers and operating uranium mines. Conc
Jan 1, 1981
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Effect Of Cycle Time On Work Done By The Pistons During Hydraulically Actuated Clamshell Dredging
By B. A. Osei
Research to evaluate possible metrics for predicting dredgeability of compact aggregates, by hydraulically actuated clamshell dredges, shows work done by the pistons as a viable metric. Analysis of fi
Jan 1, 2011
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Scaleup Experience In Gold-Silver Heap Leaching
By Daniel W. Kappes
Testing ores for heap leach operations traditionally follows a progression of bottle roll tests, bucket and column leach tests, and very expensive large field leach tests. Enough data is now available
Jan 1, 1981
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Mechanisms Involved In Reactive Flotation Of Dolomite
By A. El-Midany
Dolomite impurities are increasing in the currently mined phosphate deposits in Florida. Several research efforts have been conducted in various laboratories around the globe to find methods to econom
Jan 1, 2009
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Rock Engineering Aspects of Designing Large Span Caverns at Depth in the Deep Underground Science and Engineering Laboratory
By C. Laughton
Construction of a Deep Underground Science and Engineering Laboratory(DUSEL) is proposed under the auspices of the US National Science Foundation(NSF). DUSEL will provide scientists and engineers with
Jan 1, 2007
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The CTC (Certified Trading Chains) Mineral Certification System: A contribution to supply chain due diligence and good governance in the mining sector of Rwanda and the great lakes region in Central Africa
By D. Küster, G. Franken, P. Schütte, J. Vasters
The CTC (Certified Trading Chains) mineral certification system has been piloted in Rwanda since late 2008. CTC project implementation is jointly driven by the Federal Institute for Geosciences and Na
Jan 1, 2011
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Adaptive Reuse of Mined Lands for Solar Energy
By D. Anderson Willis, Alan A. Campoli, Douglas Mynear, Seth Mittle, J. Steven Gardner
"The diversification of energy sources in the United States has seen some major shifts during the past decade resulting from:• A sudden abundance of low-cost natural gas becoming available through adv
Jun 1, 2019
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Radial Pick Cutting Performance In Dry And Saturated Sandstone
By M. Z. A. Bakar
To investigate the differences in the radial drag pick cutting performance in dry and saturated sandstone, a suite of linear rock cutting test was performed using linear rock cutting machine (LRCM). E
Jan 1, 2012
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Bulk Handling Technology; Designing for the Future by Innovating the Present
By R. Todd Swinderman
"Higher production demands across all bulk handling segments require increased efficiency at the lowest cost of operation, in the safest and most effective manner possible. As conveyor systems become
Jan 7, 2017
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Are Long TBM Tunnels Faster by TBM?
By Nick Barton
A recent analysis of 145 TBM tunnels of more than 1000km total length has helped to quantify the time dependence of utilization (U). In fact U = Tm, where T is time in hours and m is a negative gradie
Jan 1, 2001
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Technical Note - Sizing bulk handling equipment for maximum output
By G. T. Lineberry, L. Adler
Due to safety-imposed constraints on clearances for mobile bulk handling equipment, it is necessary to optimally select a unit based on speed and size. The unit cannot be both large and fast. Since ou
Jan 10, 1985
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Importance Of Geotechnical Field Mapping In Assessing The Stability Of Underground Excavations
By A. Adu-Acheampong
Stope instability at Ashanti Goldfields Company Ltd. (AGC) is a major concern. Using information from field mapping, major discontinuity sets were defined, Rock Quality Designation (RQD) was determine
Jan 1, 2003
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Using Rock Geomechanical Characteristics to Estimate Bond Work Index for Mining Production Blocks - Mining, Metallurgy & Exploration (2021)
By Omid Asghari, Amin Mousavi, Arshad Ranjbar
Geometallurgical modeling of the production benches is an attempt to estimate the geometallurgical variables of the different ore domains, which leads to a better understanding of the ore and its prop
Oct 28, 2021
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Analysis And Control Of Energy Consumption In Surface Coal Mining - Preprint 09-082
By D. Bogunovic
The U.S. coal mining industry consumes a significant amount of energy, primarily diesel fuel and electricity. The continuous global increase in energy demand, high energy prices, and environmental iss
Jan 1, 2009
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Evaluation on Underground Refuge Alternatives and Explosion Survivability: a Review
By Taghi Sherizadeh, Kutay E. Karadeniz, Dogukan Guner, Samuel Nowak
Underground mining environments bring occupational health and safety issues with some severe dangers such as mine disasters like explosions. During such events, miners might escape using main access o
Sep 24, 2022
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Drainage Ph, Acid Production, And Acid Neutralization For Archean Greenstone Rock
By K. A. Lapakko, D. A. Antonson
Fourteen samples of pyrite-bearing Archean greenstone rock (d < 6.35 mm, 0.04% < St < 1.22%) were characterized (particle size, chemistry, mineralogy) and subjected to laboratory dissolution testing.
Jan 1, 2002
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US Uranium Industry In A Changing Global Market
By W. Szymanski
The United States contains one of the world's largest reserves of uranium. Domestic production and exploration activities, however, have declined since the early 1980s due to weaker-than-expected
Jan 1, 1994
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Mining Foundation of the Southwest Honors its 2004 Inductees
The 22nd Annual American Mining Hall of Fame Awards Banquet sponsored by the Mining Foundation of the Southwest will be held at the Westin La Paloma in Tucson, AZ on Saturday, Dec. 4, 2004. This ye
Jan 1, 2004
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Mixed Face Tunnel Jacking with a Grillage
By J. E. Bernick, J. Davies
This paper describes the design and construction of a 22.86 m (75 ft) long jacked tunnel, which was successfully installed, despite difficult mixed face conditions at Metro-North’s Westport Station, i
Jan 1, 2005