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  • SME
    Cyanide Leach Process Bans: The Technical Side

    By C. A. Young

    Cyanide is a fast-acting, highly toxic substance but, at the same time, is deemed essential for sustaining life as well as our standard of living. In this manuscript, the facts about cyanide are pres

    Jan 1, 2001

  • SME
    Excess Spoil Minimization And Fill Stability

    By M. Superfesky, P. Michael

    Introduction The US Office of Surface Mining (OSM) is proposing changes to the Code of Federal Regulations in the interest of minimizing the adverse effects of excess-spoil-fill construction on the

    Jan 1, 2007

  • SME
    An Update On “The Good, The Bad, And The Ugly” Silica--Revisited

    By E. A. Metz

    It has been approximately four years since IARC reclassified crystalline silica as a “Group One” substance. Since that time, crystalline silica has been considered a human carcinogen. Silicosis i

    Jan 1, 2000

  • SME
    Feasible Tunnel Construction Options For The Systems Conveyance And Operations Program Reach 3 Tunnel

    By S. H. Jason Choi

    The Systems Conveyance and Operations Program (SCOP) is being implemented to convey tertiary-treated effluent to Lake Mead near Las Vegas, Nevada. The Reach 3 Tunnel Project is part of SCOP. The tunne

  • SME
    Conditions For Making Direct Reduced Iron, Transition Direct Reduced Iron And Pig Iron Nuggets In A Laboratory Furnace - Temperature-Time Transformations

    By B. Anameric

    The pig iron nugget process is gaining in importance as an alternative to the traditional blast furnace. Throughout the process, self-reducing?fluxing dried greenballs composed of iron ore concentrate

    Jan 1, 2007

  • SME
    Project Delivery Models and Risk Allocation for Whole Life Tunnel Management

    By D. Caiden, C. S. Covil, P. J. Chamley

    The paper describes the background to alternative delivery models, drawing on international experience, and introduces Project Alliancing/Contract Partnering, common risks and risk sharing on tunnel p

    Jan 1, 2005

  • SME
    The Kensico–City Tunnel for New York City Water Supply

    By Robert J. F. Goodfellow, William A. T. Meakin, Kevin Clarke, Eric Cole

    INTRODUCTION New York City Water Supply—Background and History Since the 1840s New York City has been developing the largest, and perhaps, the best urban water supply and distribution system in

    Jan 1, 2005

  • SME
    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

  • SME
    Onsite Assembly And Hard Rock Tunneling At The Jinping-II Hydropower Station Tunnel Project

    By Stephen M. Smading

    The Jinping-II hydroelectric project in China features four parallel headrace tunnels approximately 18-km- (11-mile-) long. Two will be excavated by tunnel boring machines (TBM) and two by drill-and-b

    Jan 1, 2009

  • SME
    Selected Factors Affecting Longwall Mine Layouts In The Pittsburgh Coalbed Of Southwestern Pennsylvania

    By A. Iannacchione

    Longwall mining began within the Pittsburgh coalbed of Pennsylvania (PA) in the early 1970?s. Originally, longwall mine layouts were designed to fit within existing room-and-pillar operations, where

    Feb 27, 2013

  • SME
    Key Regulatory Issues Planned And Controlled Subsidence

    By Gary E. Slagel

    The year was 1974. The event - the United States Congress was embroiled over what issues should be included in the proposed national surface mining law. The question - what should be done with undergr

    Jan 1, 1986

  • SME
    Ion Exchange Resins Tailored For Effective Recovery And Separation Of Rhenium, Molybdenum And Tungsten - Introduction

    By M. Mikhaylenko

    Rhenium, molybdenum and tungsten are the elements demanded by high-end technologies. These metals are found in process solutions in forms of their oxyanions: ReO4-, MoO42- and WO42-. The later two

    Jan 1, 2012

  • SME
    Heartland Corridor Tunnels (203bfe6b-811f-4d1d-8e50-61c86efb90ba)

    By Frank P. Frandina

    The Heartland Corridor Clearance Improvement Project is part of a regional Public-Private initiative to allow double stack container trains a direct route from the Port of Norfolk through Virginia, We

    Jan 1, 2008

  • SME
    Nonfuel Minerals Projections – Why They Were Wrong

    By Ira Sohn

    This article revisits global projections made in 1981of eight metallic and fertilizer minerals for the year 2000. The objectives here are to quantify the differences between the projected and observe

    Jan 1, 2005

  • SME
    Mining on the Edge of the Murray Mine

    By Sam Ash

    The Murray Mine was one of the first mechanized cut-and-fill underground gold operations in northern Nevada. At the end of 2002, mine production began to decline. So the mine entered a phase of remnan

    Jan 1, 2006

  • SME
    Underground Mine Air and Strata Temperature Change Due to the Use of Refuge Alternatives Mining, Metallurgy and Exploration (90281dd3-2aab-47ab-9150-b1897bd40ef5)

    By M. A. Reyes, L. Yan

    Heat and humidity buildup withn refuge alternatives (RAs) may expose occupants to physiological hazards such as heat stress. The Mine Safety and Health Administration (MSHA) regulations require RAs in

  • SME
    Application Of Modern Technology In Today’s Limestone Quarry Operation

    By B. Moore, Y. J. Zhang

    In today’s competitive dimensional stone business environment, use of available technology is critical to achieve and maintain a competitive advantage. Awareness of improvements in diamond cutting tec

    Jan 1, 2004

  • SME
    Exploration (2303cc71-ebf3-44eb-bd90-42769f9f3467)

    By D. R. Wilburn

    The worldwide budget for nonferrous, nonfuel mineral exploration was expected to increase by 58 percent in 2004 from the 2003 budget, according to Metals Economics Group (MEG) of Halifax, Nova Scotia.

    Jan 1, 2005

  • SME
    Ground-Penetrating Radar for Karst Detection in Underground Stone Mines Mining, Metallurgy and Exploration (af91ef88-58ad-45be-8f21-58666827bf43)

    By Jonathan Baggett, Nino Ripepi, Amin Abbasi, Richard Bishop, Juan Monsalve, John Hole

    This work focuses on the operational and safety issues associated with karst voids in large opening underground mines. Issues include water inrush, structural instability, and engineering uncertainty

  • SME
    How To Ensure Seismic Requirements

    By A. Fuerst

    The recent seismic events have shown that earthquakes have an immense destructive power. Chile was hit in February 2010 with a seismic intensity of 8.8 on the Richter scale, and had loss of about 700

    Jan 1, 2012