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  • SME
    Mineralogical And Microscopic Evaluation Of Coarse Taconite Tailings From Minnesota Taconite Operations

    By Lawrence M. Zanko

    Eighteen coarse taconite tailings samples were collected in 2000-2001 from five western Mesabi Range taconite (iron ore) operations located in northern Minnesota, i.e., EVTAC, Hibbing Taconite (Hibtac

    Jan 1, 2007

  • SME
    Investigation of the Rockburst Mechanism of Driving Roadways in Close-Distance Coal Seam Mining Using Numerical - Mining, Metallurgy & Exploration (2021) Modeling Method

    By Stanisław Prusek, CHONG WEI, Huawei Xu, Jun Wang, Andrzej Walentek, Artur Dyczko, Derek B. Apel

    The excavation-induced stresses transferred from the panels or pillars in upper coal seams play a key role in the occurrence of rockbursts in driving roadways during close-distance coal seam mining, w

    Aug 26, 2021

  • SME
    Regulatory Toxicology And Pharmacology - Introduction - International Symposium On The Health Hazard Evaluation Of Fibrous Particles Associated With Taconite And The Adjacent Duluth Complex

    This international symposium was convened to assess the current state of knowledge concerning the health hazards that might be associated with the ingestion and inhalation of fibrous particles produc

    Jan 1, 2008

  • SME
    Heap Leaching Discussed at Roundtable

    By Kerry Lahti, Bryan Ulrich

    On Feb. 11, 2005, more than 20 mining professionals gathered in Elko, NV for a day-long round-table discussion on heap leaching. Attendees included project managers, operators and environmental profe

    Jan 1, 2005

  • SME
    Tough Times Not Enough To Deter More Than 2,200 From Northwest Mining Meeting

    Amid some of the worst economic conditions that the mining industry has been faced with in more than a decade, the mood among the large crowd at the 114th Annual Northwest Mining Association?s annual

    Jan 1, 2009

  • SME
    A Forward Look into the U.S. Rare Earths Industry; How Potential Mines Can Connect to the Global Ree Market

    "Mining used to be a business primarily focused on the technical aspects of getting valuable ore out of the ground and extracting the minerals efficiently. Without denying the importance of these skil

    Jan 1, 2018

  • SME
    Significant Developments In Dry Rare-Earth Magnetic Separation - Preprint 09-004

    By M. Dobbins

    The advent of the more efficient and effective rare-earth roll (RER) separator in the early 1980?s began a new era of dry magnetic separation. The RER units quickly became the separator of choice with

    Jan 1, 2009

  • SME
    South Cobb Tunnel - Cobb County?s Solution To Meeting Future Waste Water Capacity

    By Wojciech Klecan

    Cobb County, located on the northwest side of Atlanta, GA, is continually growing and, like many other metropolitan areas, it needs to increase the capacity of its waste water system to meet future de

    Jan 1, 2009

  • SME
    Development Of A Methodology That Integrates Environmental And Social Variables In The Investment Decision Process For Mining Projects

    By J. A. Botín

    In modern mining, the core of mine planning and design is the block model, a simplified representation wherein the ore deposit is divided in a number of virtual rock cubes, each characterized by techn

    Feb 27, 2013

  • SME
    Energy Fuels Prepared To Ride Uranium?s Resurgence

    The two candidates in the upcoming presidential election in the United States each say that they have their own solution to the nation?s energy problems - solutions that will increase the amount of en

    Jan 1, 2008

  • SME
    Does sustainable mining have any meaning?

    Sustainable development is at odds with reality in the minerals industry. Increasing world population and aspirations are leading to increased energy and mineral consumption. Non-renewable fossil fuel

    Jan 1, 2011

  • SME
    Geotechnical Investigations for Tunneling in Glacial Soils

    By David Chapman, Glen Frank

    Due to the transport mechanics of the depositional environment, glacial soils display a very wide range of grain sizes and behavior. Several nonstandard drilling, sampling, and analytical techniques a

    Jan 1, 2001

  • SME
    Tunneling Toronto Canada 1970

    By G. F. Jenkins, P. S. Hobden

    Toronto as a geographical area provides an exceptionally wide variety of subsoil stratiphication. Tunneling consequently required a very wide range of adaptabilities to meet its changing conditions. T

    Jan 1, 1997

  • SME
    Rock Cutting By Jets: A Promising Method Of Oil Well Drilling ? Introduction

    By R. Feenstra

    In the course of time, an increasing number of investigations on jet cutting all kinds of material, such as rocks1, 2, 3, metals4, 5, and wood6 have been reported to serve various applications. This p

    Jan 1, 1974

  • SME
    Role Of Gas Pressure In Underground Coal Mine Bursts And Bump

    Face and pillar bursts, bumps and bounces are violent failures that occur in underground coal mines in response to a complicated interplay of face and pillar geometry, seam depth, coal properties and

    Feb 27, 2013

  • SME
    The Candelaria Concentrator Expansion Project

    By D. L. Ogonowski, J. O. Marsden

    The Candelaria copper-gold mine is located approximately 25 km south and east of Copiapo in Region III, Chile. The original concentrator was designed to treat 28,000 t/d (30,800 stpd) of chalcopyrite

    Jan 1, 1999

  • SME
    Phelps Dodge, Caterpillar Use Technology to Lower Costs

    By Steve Kral

    For the past several years, copper producers have faced a tough business climate. Nagging low prices forced many them to reduce their production and make other drastic cutbacks just to breakeven. An

    Jan 1, 2004

  • SME
    Cost value of High-angle conveying – 2011

    By Joseph A. Dos Santos

    "The subject of this writing was first published in 1998 with the emphasis on the hardware cost comparison. Other costs, such as the required land area and spatial volume, were mentioned but not empha

    Sep 1, 2016

  • SME
    Geochemistry of ilmenite and applications to ilmenite provenance and Ti-mineral exploration

    By Antonio Pineda, Roger K. McLimans, Felicity E. Lloyd

    lmenite is a primary ore feed to the DuPont chloride process for the manufacture of titanium diox-ide pigment. We seek to determine ilmenite geochemistry as a function of original source and as-certai

    Jan 1, 2005

  • SME
    Leica Dozer 2000 At The San Miguel Lignite Mine: The Uses Of GPS Grade Control In Surface Mining

    By M. Heger

    February 2, 1999 marks a milestone in earth-moving technology at the San Miguel Lignite Mine. It was on that date that The North American Coal Corporation (NAC) took delivery of three Leica Dozer 200

    Jan 1, 2002