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Reclamation Of Metal Contaminated Soils And Sediments Using Sulfidization And Froth FlotationBy J. L. Uhrie
A potentially cost effective technique for the reclamation of heavy metal contaminated soils and sediments involves the technique of froth flotation. Heavy metals sorbed to clays in the soil may be su
Jan 1, 1996
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New Synthetic Minerals From Serpentinite Offering A Wide Range Of ApplicationsBy P. Legast
Serpentinite minerals are available in large quantities from asbestos mining activity. The granular or fibrous serpentite, at temperatures greater than 700°C, will recrystalize into olivine, forsterit
Jan 1, 1993
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Kinetics Of Pyrite Oxidation In Acidified Ferrous Sulfate Solutions In The Presence Of Oxygen-Sulfur Dioxide Gas MixturesBy J. A. Arias
The oxidation kinetics of pyrite and refractory gold concentrates in acidified ferrous sulfate solutions in the presence of oxygen-sulfur dioxide gas mixtures has been studied. The effect of temperatu
Jan 1, 1993
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A Model Investigation Of Induction Fans For Underground MinesBy I. M. Konduri
Theoretical investigation and laboratory experimentation have shown a great potential for jet fan ventilation in mines. Jet fans, also called induction fans due to the induction effect of the fluid je
Jan 1, 1996
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Inclined Pillar Strength Considerations: Review Of Different Methodologies - SME Annual Meeting 2022By R. Flattery, Z. Agioutantis
Coal and rock pillar design is critical not only for mineral extraction but also for the safety of the mine operators. Pillar strength can be estimated through numerous empirical formulas that are ava
Mar 2, 2022
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Bentonite Commodity Markets From 1992 And Future Trends - IntroductionBy William J. Miles
From a historical perspective, bentonite is the common rock term for various uses and applications. Its name originates from water-based muds near Fort Benton used for lubrication of wagon wheels duri
Jan 1, 2012
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Numerical Simulation Of Yield Pillar Behavior With Creep Material Model (ce935682-685d-46b2-bd8a-0a7153bfe254)In this study, numerical simulations of yield pillars employing the finite element method with time-dependent Drucker-Prager material model are conducted. The stress control mechanism of yield pillars
Jan 1, 1999
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Enhancing Production Decisions: Project Scheduling SimulationBy C. Patrick
Project scheduling is a deterministic technique utilizing single estimates of activity durations. In reality, activity durations are stochastic and can be better represented by probability distributio
Jan 1, 1995
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Paste Thickening Tailings ? Recent Examples Of A Rapidly Emerging TechnologyBy T. Gollaher
The use of paste thickeners for mineral tailings has gained increasing acceptance by the mining industry throughout the world and in the U.S. during the last five years. Advantages of water recovery
Jan 1, 2010
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Circular Economy in the Metallurgical Mining Industry - SME Annual Meeting 2024By Kevin Sierra, Orfelinda Avalo, Julio Guizado, Edwilde Yoplac, David Martinez
Mining tailings are slurry byproducts of mineral recovery. They generate serious environmental risks due to their toxicity when exposed to water and oxygen. Studies focus on eco-friendly alternatives
Feb 1, 2024
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New Insights Into The Mechanism Of Shear-Flocculation Of Silica With Fatty Acids (7f155cc8-a145-4d84-9411-06f34bda9205)By D. D. Murphy
The Bureau of Mines has studied the mechanism of shear-flocculation of silica with stearic acid. At pH 6 and 12, shear-flocculation of silica was not observed with up to 10-4M (5 lb/st) stearic acid.
Jan 1, 1993
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Concentrating Rare Earth Elements from Coal Fly Ash Leachates Using Ligand-Associated Organosilica MediaBy S. K. Mohanty, T. M. Dittrich, M. J. Allen, M. Dardona, A. C. Strzelecki, J. Hovey, Boukhalfa. H.
Rare earth elements (REEs) have many critical uses in advanced technology and the lack of a reliable domestic supply has been identified by the US DOE as a vulnerability to US economic security. Our r
Jan 1, 2019
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The Development Of WIPPVENT, A Windows-Based Interactive Mine Ventilation Simulation Software Program At The Waste Isolation Pilot PlantBy K. H. McDaniel
An interactive mine ventilation simulation software program (WIPPVENT) was developed at the Waste Isolation Pilot Plant (WIPP). The WIPP is a U.S. Department of Energy (DOE) research and development p
Jan 1, 1996
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Geology Of The American Girl-Padre Y Madre Gold Deposits Imperial County, CaliforniaBy J. O. Guthrie
Newmont has delineated a 600,000+ ounce gold reserve in the Cargo Muchacho Mountains. This is a desert range underlain by Proterozoic(?) Tumco Formation (gneiss) intruded by Jurassic granitic plutons,
Jan 1, 1987
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Safety Considerations For Mine Hoists And ElevatorsBy T. D. Barkand
A recent coal mine elevator accident resulted in serious injuries to four passengers. The miners struck the ceiling of the elevator car as it collided into the overhead structure at an estimated speed
Jan 1, 1995
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Predicting The Steady-State Water Quality Of Pit Lakes (fd07c166-3e92-4b5e-960c-88ab257627bc)By R. L. Lewis
A simple method for estimating the steady-state water quality of a pit lake is presented. The steady-state concentration of a conservative chemical constituent in a pit lake is shown to be a simple fu
Jan 1, 1998
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Theoretical Approach And Technical Development In Collectorless Flotation SeparationBy F. Qiming
By means of flotation experiments, potential-pH diagram, electrochemical testing and X -ray photoelectronic spectrum (XPS), the main factors (the thermodynamics and the property of surface products) i
Jan 1, 1992
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Laboratory Assessment Of Rock Fragmentation Process By Continuous MinersBy V. B. Achanti
Laboratory studies were carried out at West Virginia University to investigate the rock fragmentation mechanism by continuous miners using an automated rotary cutting simulator. The primary factors in
Jan 1, 1997
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Chemical & Physical Controls For Base Metal Deposition In The Cascade Range Of Washington StateBy Alan R. Grant
Interpretation of presently available geological information indicates that most of the periods of significant metal deposition in the Washington Cascades Range are, at least in part, genetically rela
Jan 1, 1971
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Urban Costs: The Contractor's ViewpointBy Patrick B. Kenny
Generally speaking, it is safe to address this conference as a conclave of Engineers, Owners' Agents, Governmental Representatives, and Contractors. As a group, we have assembled here to learn of
Jan 1, 1979