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Increased Cost Effectiveness Due To Portable Crushing ? IntroductionBy 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
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Spectral Detection Of KimberliteBy 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
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Statistical Optimization Of Test Design ? IntroductionBy 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
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Solvent Refined Coal: Its Merits And Market PotentialBy 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
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Use Of An Automatic Earth Resistivity System For Detection Of Abandoned Mine WorkingsBy 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
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Flambeau - A Precambrian Supergene Enriched Massive Sulfide DepositBy 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
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Evaluating Ventilation Parameters For Extended-Cut MiningBy 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
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Anomalous Artesian Pressures In Southeastern North CarolinaBy 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
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Geometrical Optimization Of The Structure Of Carboxylic Acids Vis-À-Vis Their Effectiveness Toward Iron Ore FlotationBy 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
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Short-Delay Blasting At Anaconda's Berkeley Open-Pit Mine, MontanaBy 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
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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
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Separation and Washing of Alumina Process ResidueBy 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
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Experience And Use Of Gypsum And Fiber Glass As A Mine SealantBy 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
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Crushing & Grinding - Autogenous Mill Curved Pulp Dischargers - Experience At Pickands Mather Operations, Primary Milling Iron OreBy 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
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Phosphate And Florida's EnvironmentBy 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
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Current Issues with Purported “Asbestos” Content of Talc: Part 2, Examples in Hydrothermal Hosted Talc OresBy 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
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The Value Of Target Selection In A Dynamic Risk EnvironmentBy 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
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Optimizing plant efficiency with attrition scrubbersBy 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
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Purification Of Molybdenite Concentrates By A Continuous Sulfation-leaching ProcessBy 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
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Mineralization And Alteration At The Pima Mine A Complex Porphyry Copper Deposit Pima County, ArizonaBy 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