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  • SME
    Increased Cost Effectiveness Due To Portable Crushing ? Introduction

    By K. L. Lamb

    At the Sierrita mine, 40 km (25 miles) south of Tucson, Arizona, Duval Corporation is rapidly gaining operating experience with its new Portable Crushing and Conveying System, (PCCS). As of November 2

    Jan 1, 1984

  • SME
    Spectral Detection Of Kimberlite

    By Ronald W. Marrs

    Kimberlite contains a unique assemblage of minerals and exhibits a characteristic pattern of spectral reflectance in the visible and near-infrared wavelength region. This spectral pattern is readily d

    Jan 1, 1984

  • SME
    Statistical Optimization Of Test Design ? Introduction

    By G. Reed Marchant

    The control systems engineer is often faced with the problem of designing tests or experiments where the cost of obtaining information is expensive. This is true in aerospace as well as in process ind

    Jan 1, 1968

  • SME
    Solvent Refined Coal: Its Merits And Market Potential

    By Robert M. Jimeson

    The competitive market potential for solvent refined coal is estimated. Market advantages of solvent refined coal are enumerated. Markets are possible in combustion, railroad locomotion, and carbon el

    Jan 1, 1969

  • SME
    Use Of An Automatic Earth Resistivity System For Detection Of Abandoned Mine Workings

    By Wendell R. Peters

    Shallow underground voids resulting from early coal mining and other resource recovery activities over the past several decades are now being recognized as a significant cause of ground subsidence pro

    Jan 1, 1981

  • SME
    Flambeau - A Precambrian Supergene Enriched Massive Sulfide Deposit

    By Edwarde R. May

    The Flambeau volcanogenic massive sulfide deposit located in northwestern Wisconsin occurs within the southern lobe of the Canadian Precambrian Shield. The steeply dipping tabular body occurs in a com

    Jan 1, 1976

  • SME
    Evaluating Ventilation Parameters For Extended-Cut Mining

    By J. P. Rider

    The number of extended cut mining systems has increased significantly in coal mines over the last decade, and there is a constant push to extend the face ventilation systems to even greater setback di

    Jan 1, 1997

  • SME
    Anomalous Artesian Pressures In Southeastern North Carolina

    By Harry H. Peek

    Artesian pressures of unusual magnitude occur in the deeper aquifer units beneath a considerable part of southeastern North Carolina and extend into South Carolina. The high pressures were first obser

    Jan 1, 1977

  • SME
    Geometrical Optimization Of The Structure Of Carboxylic Acids Vis-À-Vis Their Effectiveness Toward Iron Ore Flotation

    By B. Bag

    Saturated and unsaturated fatty acids are used in the flotation of iron values present in iron ore. Among the several fatty acids, oleic acid and its sodium salt are widely used. To substantiate the f

    Jan 1, 2009

  • SME
    Short-Delay Blasting At Anaconda's Berkeley Open-Pit Mine, Montana

    By Lewis L. Oriard

    The authors outline the development and application of blasting methods put into use 11 years ago at the Berkeley Open-Pit Mine, Butte, Montana. The blast design uses a very short delay (5 millisecond

    Jan 1, 1980

  • SME
    Cable bridge conveyor: New suspension bridge based conveyor system

    "Above ground, elevated belt conveyors that span more than 200 m (656 ft) between support points can cross valleys, rivers, forests and buildings with a minimal footprint. The cable bridge conveyor (C

    Jan 1, 2014

  • SME
    Separation and Washing of Alumina Process Residue

    By Morton Handelman

    The extraction of aluminum oxide_ from its ore is the initial step in the commerical production of metallic aluminum. This is most commonly done by the Bayer Process in which a caustic solution is use

    Jan 1, 1959

  • SME
    Experience And Use Of Gypsum And Fiber Glass As A Mine Sealant

    By Douglas M. Dwosh

    INLAND STEEL COAL COMPANY'S experience with a gypsum cement, with and without fiber glass filler, indicates that the concept of utilizing standard rock dust equipment to dry handle and apply gyps

    Jan 1, 1976

  • SME
    Crushing & Grinding - Autogenous Mill Curved Pulp Dischargers - Experience At Pickands Mather Operations, Primary Milling Iron Ore

    By A. M. McKim

    6, 7.3 meter diameter autogenous mills at Wabush Mines are undergoing conversion from a radial configuration of pulp discharger to a curved design. Improved discharging efficiency has effectively lowe

    Jan 1, 1982

  • SME
    Phosphate And Florida's Environment

    By R. S. Hearon

    The image of the open-pit miner in the eyes or the Environmentalist has never been very outstanding. The phosphate industry, whose history in Florida reaches back to the late 1800's, can-not be c

    Jan 1, 1978

  • SME
    Current Issues with Purported “Asbestos” Content of Talc: Part 2, Examples in Hydrothermal Hosted Talc Ores

    By M. Gunter, M. Buzon

    "Talc formed by hydrothermal alteration of preexisting carbonate rocks is known to be nearly monomineralic, and lacking in amphiboles. In southwest Montana, talc formed from hydrothermally altered dol

    Jan 1, 2016

  • SME
    The Value Of Target Selection In A Dynamic Risk Environment

    By D. N. Hillhouse

    The economics of exploration target selection can be measured ultimately only against a company's success at developing mines. In the following brief history of the mine acquisitions of one compa

    Jan 1, 1984

  • SME
    Optimizing plant efficiency with attrition scrubbers

    By Mike Preston

    Attrition scrubbers may not be glamorous, but they are an important and sometimes neglected step in mineral processing. Optimal attritioning will significantly improve the results and efficiencies of

    Oct 1, 2013

  • SME
    Purification Of Molybdenite Concentrates By A Continuous Sulfation-leaching Process

    By I. WILKOMIRSKY, J. BECKER, F. Parada

    The current processes that aim to purify molybdenite concentrates are not able to dissolve some copper compounds, hence limiting the processes. Typically, the copper content results are from 2 up to 4

    Jan 1, 2023

  • SME
    Mineralization And Alteration At The Pima Mine A Complex Porphyry Copper Deposit Pima County, Arizona

    By Marshall D. Himes

    The Pima mine, 39,000 ton per day copper mine, is located 17 miles south of Tucson, Arizona. The mine is in a sequence of Paelozoic and Mesozoic sediments striking east-northeast and dipping southeas

    Jan 1, 1972