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Geological Parameters Affecting Open Hard-Rock Tunnel Boring Machine Performance
By Taehong Kim
An accurate and reliable prediction of Tunnel Boring Machine (TBM) performances, in terms of Rate of Penetration (ROP), utilization (U), and cutter wear rate, is a critical element in the successful p
Jan 1, 2008
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Roof Bolting Hazards Analysis
By J. H. Adkins
The goal of the project reported in this paper was to make recommendations for changes in roof bolting procedures and bolter design that would reduce roof bolter accident rates. To that end the projec
Jan 1, 1978
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History of the Getchell Gold Mine
By Robert C. Horton
The Getchell Mine is located on the east flank of the Osgood Mountain Range in the Potosi Mining District, Humboldt County, NV. Mining in the area first began in 1883 for copper, lead and silver in s
Jan 1, 1999
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Quantitative Mineralogical Study Of Ore Domains At Bingham Canyon, Utah, USA ? Introduction - Preprint 09-108
This geometallurgical study examines the gangue mineral variability at the Bingham Canyon porphyry copper mine in Utah. Understanding an orebody?s mineralogy is important for mine and mill planning be
Jan 1, 2009
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Current Status of Federal Regulations and Rulemaking in Governing Subsidence Due to Underground Mining
By Dermot Winters
The Surface Mining Control and Reclamation Act (SMCRA, or the Act) was enacted on August 3, 1977. The Act was written, in part, to put an end to uneven environmental standards and to establish minimum
Jan 1, 1986
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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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Mining Foundation of the Southwest Honors Its 2006 Inductees
The Mining Foundation of the Southwest will host its 24th Annual American Mining Hall of Fame Awards Banquet at the Tucson El Conquistador Golf & Tennis Resort in Tucson, AZ on Saturday, Dec. 9. T
Jan 1, 2006
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Exploration (692d4533-e846-4408-ba93-9ba3d3c0a995)
By D. R. Wilburn
The worldwide budget for non fuel mineral exploration was expected to increase by 27 percent in 2003 from the 2002 budget, according to the Metals Economics Group (MEG) of Halifax, Nova Scotia. The i
Jan 1, 2004
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Water Jets And Rock Hammers For Tunneling In The U. S. And U. S. S. R.
By William C. Cooley
SUMMARY A review is presented of the state of development of high pressure water jet equipment and of large impact hammers for rock tunneling. Information from the U.S.S.R. is based on published li
Jan 1, 1997
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Sodium Sulfate – 5,000 Years of Mining and Processing Salt Cake
By Donald E. Garrett
Sodium sulfate is one of the larger tonnage industrial minerals. A little more than half of this tonnage — 3 Mt/a (3.3 million stpy) of natural product— is recovered from ore deposits. Most of the r
Jan 1, 2002
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Synthesis Of Monolithic Si2n2o Ceramic From Reclaimed Silicon And Desert Sand
By M. Radwan, S. Shimada, S. Z. El-Tawil, K. A. El-Barawy, Y. Miyamoto
This study presents the results of synthesizing monolithic siliconoxynitride, Si2N2O, ceramic from a mixture composed of reclaimed silicon and natural desert sand by using the nitriding combustion syn
Jan 1, 2004
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Tunneling Alternatives For Subway Connection In Downtown Chicago
By A. Ayoubian, V. Nasri
This Tunnel Connection project will include construction of two short tunnels to connect the existing subway tunnels (Red and Blue lines) in the northern loop area of downtown Chicago through a new st
Jan 1, 2007
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Big News And Excellent Sessions Define 2009 Fox Conference
As the 2009 George Fox Conference neared its conclusion, Arthur Silber, project chief of the Mass Transit Tunnel (MTT) project was able to pull away from the constant buzzing of his Blackberry long en
Jan 1, 2009
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China Featured at the Minnesota Conference
By William R. Yernberg
The combined 79th Annual Minnesota Section of SME Meeting and 67th Annual University of Minnesota Mining Symposium was held April 11 and 12, 2006, in Duluth, MN. About 300 mining professionals attend
Jan 1, 2006
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Estimation of Grinding Time for Desired Particle Size Distribution and for Hematite Liberation Based on Ore Retention Time in the Mill Mining, Metallurgy and Exploration
By Rameshwar Sah, Bharath Kumar Shanmugam, Govinda Raj Mandela, Marutiram Kaza, Harsha Vardhan, Harish Hanumanthappa
Iron ores obtained from different sources differ in their chemical and physical properties. These variations make the process of grinding a difficult task. The work carried out in this context focuses
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Estimation of Grinding Time for Desired Particle Size Distribution and for Hematite Liberation Based on Ore Retention Time in the Mill Mining, Metallurgy and Exploration (ff4e1177-21df-44a1-9ca7-c600c2bd555d)
By Rameshwar Sah, Bharath Kumar Shanmugam, Govinda Raj Mandela, Marutiram Kaza, Harsha Vardhan, Harish Hanumanthappa
Iron ores obtained from different sources differ in their chemical and physical properties. These variations make the process of grinding a difficult task. The work carried out in this context focuses
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The Pyke Asbestos Deposits, New Zealand
By Jr. Babcock
The Pyke asbestos deposits were discovered by Kennecott Explorations (Australia) Pty. Ltd., in 1969 during the course of base metal exploration on the South Island of New Zealand. Extensive occurrence
Jan 1, 1978
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Pumpable Roof Supports: An Evolution In Longwall Roof Support Technology (aa067599-8739-4939-97db-53d31f797a34)
By T. M. Barczak
Pumpable roof supports provide an alternative approach to secondary support in underground mining. Unlike all other supports that are either partially or fully prefabricated prior to being transporte
Jan 1, 2008
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Pneumatic Flotation – An Innovative Application In The Processing Of Potash Salts
By R. M. Imhof, M. J. G. Battersby, G. Ciernioch
Pneumatic flotation is rapidly becoming accepted in the main stream of flotation techniques. Imhoflot is a pneumatic flotation process that in recent years has undergone progressive development. It co
Jan 1, 2002
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Chip Formation In Mechanical Excavation: An Indicator Of Machine Performance
By J. P. H. Steele, M. U. Ozbay
As mining operations progress toward tele-mining and autonomous procedures, the need for machine performance monitoring increases. Presently, through a combination of vision, sound, and other subject
Jan 1, 2002