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  • SME
    Extraction of Gold From a Carlin-Type Ore Using Thiourea

    By R. A. Pyper, J. L. Hendrix

    Laboratory leaching experiments were conducted to ascertain the effectiveness of acidic solutions of thiourea, CS(NH2)2, for dissolving gold from finely disseminated gold ores. The ore tested was from

    Jan 1, 1981

  • SME
    The Significance Of Filter Cake Pore Structure As Determined By Micro-Ct In The Analysis Of Filtration Phenomena

    By J. D. Miller, C. L. Lin

    Filtration of fine particles involves filter cake formation and removal of surface moisture by drawing air through the porous structure. Accurate assessment of the transport properties of porous medi

    Jan 1, 2002

  • SME
    Successful Application Of Remote Seals Used To Extinguish A Coal-Mine Fire

    By D. Bour, C. Nyikos, R. Curtice

    Fire in a coal mine can be disastrous on many levels. In most cases, when a fire is detected, mining operations cease and all personnel are evacuated. Underground coal-mine fires are difficult to exti

    Jan 1, 2002

  • SME
    Inductive Electrostatic Gradiometry (IESG) Deciphers Keweenawan Copper Plumbing System

    By J. Trow

    Dowsing is really IESG which inductively locates electric gradients (dv/dx) on the flanks of SP anomalies. "Sensors" are in one?s head. The "meter" consists of one?s body, limbs, and two $.69 welding

    Jan 1, 1992

  • SME
    Promising Options for Solving the Dolomite Problem of the Florida Phosphate Resources—a Brief Review Mining, Metallurgy and Exploration

    By Dapeng Zhang, Brij Moudgil, Shibo Zheng, Chunhui Feng, Wenyi Song, Wending Xiao, Patrick Zhang

    Separation of dolomite from phosphate is the most challenging problem in phosphate mineral processing. Over 50% of the future phosphate reserve in Florida contains too much dolomite to process using t

  • SME
    Solving a conundrum: Why a conventional wet gravity circuit was abandoned in flowsheet design for a garnet project in Central Australia

    By S. J. Benson

    The Harts Range deposit, owned by Olympia Resources is located some 130 kms northeast of Alice Springs, in central Australia (part of Australia’s Northern Territory). The core economic minerals here

    Jan 1, 2005

  • SME
    61st Iteration of MINExpo Upbeat, Optimistic

    By Tim O’Neil

    “America’s mining industry brings good jobs to communities across America and provides the energy, minerals and equipment that are vital to our economic security and our way of life.” That was the

    Jan 1, 2004

  • SME
    Underground Mine Management Systems

    By James Wm. White

    Today a large number of open pit mines use computer-based mine management systems to automatically assign haul trucks, track equipment, and manage information. Now advances in digital communications a

    Jan 1, 1996

  • SME
    Mineral Appraisal Issues In Court Testimony

    By J. S. Limb

    Actual issues which arose during the discovery process or subsequent court testimony are presented. While most of these issues relate to the author’s specialty of mineral appraisal some are more g

    Jan 1, 2001

  • SME
    Assessing the contribution of underground in-situ coal gasification (UICG) within a sustainable development framework

    By Z. Hyder, M. Karmis

    Underground or In-situ Coal Gasification (UCG or UICG), though not a new concept, is now attracting considerable global attention as a viable process to provide a "clean" and economic fuel from coal.

    Jan 1, 2011

  • SME
    Activated and Natural Sodium Bentonites and Their Markets

    By Kent von Maubeuge, Charles R. Landis

    The global bentonite industry is a dynamic market balancing a range of end uses with an ever growing number of bentonite producers. In addition, markets in developed countries are elevating the level

    Jan 1, 2004

  • SME
    Activation Mechanism of Lead Ions in the Flotation of Rutile Using Amyl Xanthate as a Collector Mining, Metallurgy and Exploration

    By Qinbo Cao, Qianshan Peng, Heng Zou, Xingcai Yu

    In this work, a new flotation strategy was proposed for the flotation of rutile. In this strategy, rutile was activated by Pb(NO3)2 and then floated with amyl xanthate (AX) as a collector at pH 8. Pb(

  • SME
    Activation Mechanism of Lead Ions in the Flotation of Rutile Using Amyl Xanthate as a Collector Mining, Metallurgy and Exploration (4401b4da-c269-4538-8819-8ae624ce5432)

    By Qinbo Cao, Qianshan Peng, Heng Zou, Xingcai Yu

    In this work, a new flotation strategy was proposed for the flotation of rutile. In this strategy, rutile was activated by Pb(NO3)2 and then floated with amyl xanthate (AX) as a collector at pH 8. Pb(

  • SME
    Developing And Implementing An Enterprise Reliability Strategy (ERS) In Mining Operations

    By J. W. Davis

    In the last few years major industrial companies have begun to realize the importance of Reliability as an enterprise strategy that, properly implemented, will improve financial performance. Typical

    Jan 1, 2003

  • SME
    Rheology of ore suspensions with fibrous minerals and its impact on flotation performance Mining, Metallurgy and Exploration

    By P. Somasundaran, D. R. Nagaraj, Tarun Bhambani, P. Patra

    Flotation separation and recovery of value minerals from ores containing fibrous silicate minerals are known to be quite challenging. Earlier studies have established that the metallurgical challenges

  • SME
    Experimental Study Of Residence Time Distributions Of Ball-Mill Circuits Grinding Coal-Water Mixtures

    By K. Shoji

    Residence time distributions (RTDs) were estimated by water tracing in a number of wet overflow ball mills (diameters 0.38 to 4.65 m) producing dense, coal-water slurries. In open-circuit mills of 0.3

    Jan 1, 2008

  • SME
    Water Tunnel Beneath New York Harbor

    By Mohammad R. Jafari

    The Camp Dresser & McKee (CDM)/Hatch Mott MacDonald (HMM) joint venture has been engaged by the New York City Economic Development Corporation (NYCEDC) to provide engineering ser-vices in connection w

    Jan 1, 2008

  • SME
    Use Of The Multiple Accounts Analysis Process For Sustainability Optimization

    By S. Shaw

    There is an increasing requirement for mines to meet a certain minimum criteria for sustainability within the context of the physical environment, ecosystem and socio-economic system in which they are

    Jan 1, 2004

  • SME
    The effects of ventilation controls and environmental cabs on diesel particulate matter concentrations in some limestone mines

    By J. D. Doll

    MSHA has promulgated a rule to limit the exposure of underground metal/nonmetal miners to diesel particulate matter (DPM). In May 2008, the final personal exposure limit will be lowered to 160 µg/m3 t

    Jan 1, 2009

  • SME
    High Performance Tunnel Boring Machine for Kárahnjúkar Headrace Tunnel, KAR-14—A Design and Case History

    By Brian Khalighi, Massimo Franceschi, Giovanni Giacomin, Gianni Porta

    Headrace Tunnels and parts of the Access Adit Tunnels of Kárahnjúkar Hydropower project, KAR-14, in Iceland will be excavated using three full-face Robbins Tunnel Boring Machines (TBM). TBM sizes rang

    Jan 1, 2005