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U. S. Borax: Still Mining Borates After 131 Years
By Steve Kral
Borates are minerals that contain boron. Trace amounts exist in rocks, soil, water and people. Boron-containing ores are rare and U.S. Borax, a subsidiary of Rio Tinto Borax, controls one of the wor
Jan 1, 2003
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Microtunneling For Utilities Under Harold Railroad Interlocking
By William Reininger
Microtunneling provides a necessary solution for multiple utility crossings associated with the New York Metropolitan Transportation Authority Capital Construction Company?s (MTACC) Eastside Access Pr
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New Application Of Organic Coating To Existing Ground Support Products - Preprint 09-107
By M. Slatter
The need for anti-corrosion coatings has existed for many years in the ground support industry, but the application requirements have made coating selection limited. Varying groundwater and chemical
Jan 1, 2009
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Support Of The Leipzig City—Tunnel Extension Using A Tie-Back Supported Freeze Wall
By Helmut Hass, Michael B. Gilbert
The extension of the commuter railway system (S-Bahn) in Leipzig, Germany willrequire the construction of an underground line crossing the downtown area of thecity to tie the Bavarian Station in the S
Jan 1, 2007
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Construction of the Sacramento River Tunnels on the Lower Northwest Interceptor Sewer, Sacramento, California
By Dan Martz, Bill Moler, David Young, Wally Chen, Matthew Crow, Steve Norris, Tolga Togan
Two 610 m (2000 ft) long tunnels were driven through water bearing silts, sands and clays beneath the Sacramento River using a 4.59 m (15.1 ft) diameter Earth Pressure Balance Tunnel Boring Machine (E
Jan 1, 2007
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Dysfunction Junction: When Inalterable Rules Meet Evolving Technology
By Mark N. Savit
It is indeed a rarity for a non-engineer, let alone a lawyer, to even be considered for a mining-related award, especially where that award is for significant contributions to technical progress in th
Jan 1, 2008
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Mining And Community Development: From Rethoric To Practice
By E. Sirolli
In recent times, with rare exceptions, most economically viable ore discoveries have been large, low-grade and located in remote parts of the world. Mining companies have often shown to be incapable o
Jan 1, 2012
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Water-Jet-Assisted Roadheaders
By Bradley V. Johnson, Robert J. Timko, Edward D. Thimons
Water-jet-assisted cutting involves the use of a mechanical cutting bit in combination with a high-pressure water jet directed just in front of the bit tip. Such a jet can offer benefits in terms of i
Jan 1, 1987
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A Computer Design Of Ultimate Pit Limit By Using Transportation Algorithm
By Panlop Huttagosol
The use of computer models to design ultimate pit limit of an open pit mine during its feasibility study has become an emphasized procedure in mining. It is a normal practice in open pit mine design t
Jan 1, 1992
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Siemens Controllers Aid Processing at the Madero Project
By Rolando Gonzalez
Mexico’s role in the world economic community continues to grow. And it is important that the country makes use of its natural wealth, including its large underground deposits of minerals and metals.
Jan 1, 2003
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Kenya- A New Source Of Titanium Minerals
By J. C. Potvin
Although the occurrence of deposits of titanium minerals on Kenya’s present day beaches and adjacent dune systems has been well documented, the potential for older formations to host economically viab
Jan 1, 2001
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A Computer-Based Hazard-Awareness Assessment Program For Surface Mines – Preprint 97-120
By C. J. Bise, D. A. Poukhovski
Two integral components of the 30 CFR 48 training requirements mandated for new miners, newly employed experienced miners, and the annual refresher training of all miners are hazard recognition and pr
Feb 24, 1997
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Fluorspar – trends and changes in production and use
By Lawrence Pelham
Introduction Fluorspar demand or consumption has been taken for granted in recent years, except for those that produce, market, or consume the commodity. Thinking used to be that as the steel and alu
Jan 11, 1986
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Technical Note - Mine modifications for economic survival —a case study
By R. L. Grayson, G. Mishra
Introduction Many old underground mines have been developed extensively into reserves requiring large numbers of workers to maintain and rehabilitate lengthy track haulages and/or belt conveyor sys
Jan 3, 1987
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Cliffs And Associates Limited Circored® Iron Plant
By E. C. Dowling, S. A. Elmquist, L. A. Kipfstuhl
The Cliffs and Associates Limited (CAL) 500,000 tpy HBI plant located in Trinidad was commissioned after modifications in early 2001. This plant employs the novel Lurgi Circored® process to reduce iro
Jan 1, 2002
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Water Resources Development In The Arid Andean Antiplano Southern Bolivia
By S. A. Osterberg, J. L. Breckenridge, R. S. Popielak
Multidisciplinary investigations were completed to prove the availability of water resources for the proposed San Cristóbal silver-lead-zinc mine in the arid Altiplano of Bolivia. Surface water resour
Jan 1, 2002
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Application of Column Flotation to Lead and Zinc Beneficiation at Cominco
By M. J. Fairweather, J. R. Egan, W. A. Meekel
Cominco Metals, in cooperation with two Canadian Universities and the Government of Canada, is developing applications for column flotation in the treatment of lead and zinc ores. Plant scale results
Jan 1, 1988
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Grouting For Groundwater Control Milwaukee Inline Project
By Edwin F. Shorey, Richard F. Coon, Steven B. Fradkin
Crosstown Interceptor Phase IA is the first deep tunnel element of the Milwaukee Inline Project. The tunnel contract includes 6,492 meters (m) of 9.1-m-diameter tunnel, two access shafts, and partial
Jan 1, 1987
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Planning and Preliminary Design of the North-South Bypass Tunnel, Brisbane, Australia
By Tony Peglas, Harry Asche, Eva Wood
The North-South Bypass Tunnel is a new $AUD1.5 billion underground traffic route in Queensland, Australia, a project of the Brisbane City Council. The tunnel is approximately 5.2 km long, bypassing th
Jan 1, 2005
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Utilization of lignite fly ash as hydraulic binder and backfill material
By I. Gombköto, G. Földing, G. Mucsi, B. Csoke, J. Faitli, B. Kovács
This paper summarizes the main achievements of our previous project entitled "Development of a technological system producing quality guaranteed fly-ash based binder". Furthermore, this study deals wi
Jan 1, 2011