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Design And Construction Challenges At The Gualcamayo Mine ? Introduction
By N. Ward
The Gualcamayo Mine is located in the Andes Mountains north of San Juan, Argentina (Figure 1). A property of Yamana Gold Inc, it declared commercial production in July 2009 and has a total mineral re
Jan 1, 2011
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Transportation is Key to a profitable industrial minerals business
By Norbert T. Rogers
An accepted statement of fact is that, next to agriculture, transportation is the second most important industry in the world. The transportation networks of the United States have greatly contributed
Jan 1, 1989
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Earth Pressure Balance Machines for the Silicon Valley Rapid Transit Project - Basis of Design
By Jimmy Thompson
The Santa Clara Valley Transportation Authority is designing the Silicon Valley Rapid Transit Project in San Jose, California. The project includes 6.9 km (4.3 miles) of twin-bored tunnels to be const
Jan 1, 2008
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San Diego Courthouse Commons Tunnel: Challenges and Design Solutions - NAT2022
By Jeremy Stone, Yiming Sun, John Stolz
The Courthouse Commons Tunnel facilitates the secure transfer of inmates between the County Jail and State Courthouse across a city block in downtown San Diego, California. This shallow tunnel was exc
Dec 1, 2022
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Manila Aqueduct (Philippines) — The Construction of the Umiray-Angat Tunnel Project — A Success of Organisation and Technology Against a Unique Combination of the Most Adverse Conditions Ever Encountered in Tunneling
By Remo Grandori
The Umiray Angat 13,2 km long tunnel in Philippines have been bored through extremely variable and difficult ground conditions including a number of special events. In particular the following adve
Jan 1, 2001
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Tunneling in the Cooper Marl of Charleston, South Carolina
By Michael J. Robison, Wojciech F. Klecan, Robert L. Horner
Since 1928, nearly 64 km (40 mi) of tunnel have been excavated within the relatively soft Cooper Group, more commonly known as the “Cooper Marl,” for water supply and transporting wastewater in the Ch
Jan 1, 2001
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Liner System Protects Oils Sands’ Tailings Area
Syncrude Canada produces a large part of Canada’s crude oil supply. The company processes about 225,000 bbl/day. The oil produced is used for jet and automobile fuel, home heating oil, plastics and
Jan 1, 2000
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Mining Labor Survey Sheds Light on Wages and Benefit Plans
By Jennifer B. Leinart
Sixty percent of the mines responding to the sixth annual Mining Cost Service labor survey reported increases in wages averaging 3.4% over the preceding 12 months. Only one mine reported a decrease in
Jan 1, 1990
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Reducing dust exposure from contaminated work clothing with a stand-alone cleaning system
By A. B. Cecala
A few years ago, the National Institute for Occupational Safety and Health and Unimin Corporation developed a clothes cleaning system that is able to quickly, effectively, and safely remove dust from
Jan 1, 2009
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LiDAR Mapping of Ground Damage in a Heading Reorientation Case Study
The Subtropolis mine is a room-and-pillar mine extracting the Vanport Limestone near Petersburg, Ohio. In February 2018, mine management began implementing a heading reorientation to better control th
Jan 7, 2020
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A Review Of Carcinogenicity Studies Of Asbestos And Non-Asbestos Tremolite And Other Amphiboles
By John Addison
Experimental animal studies comparing asbestos and non-asbestos varieties of tremolite indicate tremolite asbestos is markedly more carcinogenic. By direct analogy, the differences in carcinogenicity
Jan 1, 2007
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Peruvian Mining Convention Focuses on Sustainable Development
By William R. Yernberg
The 26th Peruvian Mining Convention (Convención de Ingeneieros de Minas del Perú) was held Sept. 15 through 19, 2003, in Arequipa. The convention was sponsored by the Peruvian Institute of Mining Engi
Jan 1, 2004
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Construction Aggregate Properties of the Sombrerito Formation, Dominican Republic
By S. J. Stokowski
Abstract An extensive drilling and laboratory testing program indicates that a construction aggregate resource is present within the Oligocene Sombrerito Formation limestone, southwestern Dominican Re
Jan 1, 1991
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Caterpillar With Tunnel Boom Boosts Productivity On Swiss Project
A dedicated tunnel construction version of the Caterpillar 328D LCR compact radius excavator is proving highly productive on the A9 Autoroute construction project near Visp, in Switzerland. It is the
Jan 1, 2009
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Design and Construction of a Multiple-Drift Subway Underpinning Structure for Boston’s Central Artery/Tunnel Project
By Robin B. Dill, Mark Pelletier, Daniel J. Dobbels, Subodh Bhaumik, Daniel J. VanRoosendaal
Although primarily cut-and-cover excavations are required for replacement of the existing elevated I-93 interstate highway through the heart of Boston for the Central Artery/Tunnel (CA/T) project, som
Jan 1, 2001
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Globalization in the 21st Century Discussed at Colorado MPD Meeting
By Steve Kral
Globalization was the key word for the mining industry during the 1990s, just as productivity was the key word of the 1980s. And globalization will remain the key word as the industry enters the 21st
Jan 1, 1999
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Designing Continuous Conveyor Systems in Urban Environments: The 63rd Street Access Tunnel in New York City
By Dean Workman
Located in downtown New York City, this project necessitated an innovative conveyor design for successful muck removal. This paper will discuss the technical challenges and engineering solutions of th
Jan 1, 2008
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Design of the University Link Tunnels and Stations
By Daniel N. Adams
The University Link project extends Seattle?s light rail from downtown to University of Washington (UW). It includes 5.0 kilometers (3.15 miles) of twin-bored, 6.4 meters (21 feet) excavated diameter
Jan 1, 2008
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Getchell Mine Pressure Oxidation Circuit Four Years After Startup
By Dale Matthews
The Getchell Mine, near Winnemucca, NR, was discovered in the 1930s and was initially mined to recover gold from oxide ores. During the 1940s and 1950s, gold was recovered from the highly refractory a
Jan 1, 1994
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Fine Copper Grinding Using Metso’s Stirred Media Detritor
By Graham Davey
High-speed stirred milling is a relatively new method of grinding in the metalliferous process industries. However, it has been widely used in the industrial mineral field for more than 30 years. Man
Jan 1, 2004