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  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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

  • SME
    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