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Tying Acceleration And GPS Location Information Together To Create A Mine Management Tool (46eb7fa8-c025-4c28-b865-1393c124ce32)
By J. Walden, S. Rhoades, R. E. Miller, R. Gibbs, P. Boman
Accelerometers and pressure transducers mounted in suspension components can be used to monitor the ride of haulage trucks. Presently, it is difficult to tell what caused a jolt to the truck using eit
Jan 1, 1999
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Construction Aggregates Industry Trends Inspire Innovation
By Bruce W. Woolpert
During the SME Board of Directors’ midyear meeting in Monterey, CA Aug. 25, I discussed trends in the construction aggregates industry. Many construction-material suppliers may not have yet fully int
Jan 1, 2002
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Geophysical Measurements Related To Tunneling
By Sigmund D. Schwarz
INTRODUCTION In late 1970, an experimental geophysical program was undertaken at the Lake Huron Tunnel for the purpose of developing a geophysical technique that could be applied to determining the
Jan 1, 1997
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Reproducibility Of Bond Work Index With Different Standard Ball Mills
By P. C. Fletcher, E. Kaya
The Bond grindability testing procedure has been standardized to measure the same grindability values, i.e. Bond work index (BWi), for the same ore when tests are performed in different laboratories o
Jan 1, 2002
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Use Of Geologic Structure In Room-And-Pillar Design ? Introduction
By David E. Nicholas
Design of underground openings is becoming more critical as the mine deposits become lower in grade, initial investments increase, ore depth increases, additional safety regulations come into law, and
Jan 1, 1976
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Helping Banks To Manage Mineral Land Trusts
By S. M. Pickering
Banks frequently manage large privately owned mineral land trust accounts for estate heirs. The bank has a fiduciary obligation to follow the “Prudent Man Rule”, which requires that trust properties
Jan 1, 2002
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Operating speed assessments of underground mining equipment
By J. P. Ducarme
Numerous fatal/nonfatal accidents involving underground workers struck by powered machinery occur yearly, with continuous miners and roof bolters involved in the majority of these accidents. In an att
Jan 3, 2010
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Numerical Analysis for the Prediction of Bump Prone Conditions: A Southern Appalachian Pillar Coal Bump Case Study
Two miners were fatally injured when a pillar bump occurred during retreat mining in a southern West Virginia coal mine. The mine was operating in the Eagle seam with overmining in the No. 2 Gas and P
Jan 7, 2020
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New Developments In Flow And Pipe Management Capabilities Through New Velocity Profile Measurement And Pipe Wall Wear Monitoring Instrumentation - Preprint 09-006
New developments in the non-invasive and real-time measurement of the velocity profile of slurry flow in horizontal pipes will be described. This information can be used to determine the approach and
Jan 1, 2009
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Practical Geostatistics At Newmont Gold: A Story Of Adaptation
Newmont Gold's methods for deposit modeling vary, depending on geology, mining and processing methods, economic feasibility and availability of historical information. It is argued that successfu
Jan 1, 1998
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Boart Longyear 4200 Surface Drill Features Improved Safety
Safety is the No. 1 concern of any drill contractor or mine operator. Everyone in the industry knows a safe site helps stabilize operational costs and enables higher productivity. When it comes to ex
Jan 1, 2009
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Exploration remains hot
As metal prices fluctuated over the years, so too have the fortunes of many of those mining in Canada?s Yukon province. With a rich mining history that dates back to the Klondike gold rush of 1896 to
Jan 1, 2010
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The Price Is Right?Planning Large Water Tunnel Contracts In New York
By Christian Maguire
Tunnel contracts in New York have in recent years had few bidders with the bids received being much higher than anticipated. Since 9/11, security has become a key issue in planning key infrastructure
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Final Tunnel Liner At The Mill Creek 3 Project
By M. Schafer
The 6-m- (20-ft-) diameter cast-in-place tunnel lining for Phase 3 of the Mill Creek Tunnel (MCT3) has been completed. This article summarizes aspects of liner design and ad-dresses the construction a
Jan 1, 2008
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Update On Development Of Mini-Disc Drill Bits
By J. E. Friant
The Mini-DiscTM cutter drill bit is a radical design departure from the traditional tri-cone rockdrill bit. Miniature disc type cutting tools as small as 3.25 inches (82.5 mm) diameter are fitted to
Jan 1, 1999
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Rich Hill, Arizona: Historic Gold District, Modern Gold Rush
By Erik Melchiorre, M. Katherine Crombie, Dante Lauretta, Chris Gholson
Rich Hill, also known as Weaver District No. 2, is among the most productive placer gold locations in Arizona. Located near Congress, AZ (Fig. 1), this district hosted major placer rushes in the 1860
Jan 1, 2003
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Defining the Niche of Ground Freezing
By Paul C. Schmall, Arthur B. Corwin, Derek Maishman
Ground freezing occupies a unique and important niche in underground construction, fulfilling a geotechnical need that is difficult, or sometimes impossible, to fulfill through other groundwater contr
Jan 1, 2005
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Gold and Silver Assay Methods in the Mining and Metallurgy Industry
By L. C. Stone, J. C. Parr, T. N. Anderson, D. Metcalf
An increase in the importance of low-grade materials as sources of gold and silver has led to the need for improved analytical methods on leach solutions, ores and various effluents, residues, and in-
Jan 1, 1981
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San Francisco?s Central Subway, Extending the Third Street Light Rail to Chinatown
By Matthew E. Fowler
The Central Subway will extend the recently completed 8.2-km long Third Street Light Rail line another 2.7 km north through the Union Square shopping district to Chinatown with a concourse-to-concours
Jan 1, 2008
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The 97th Hour: Extending Refuge Alternative Survival ? Summary
By S. Cotten
The regulations for current coal mine refuge alternative (RAs) require that there be sufficient life support to sustain survival of the maximum number of RA occupants for a minimum of 96 hours. This
Jan 1, 2011