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Effects of Downwash from a 6-Rotor Unmanned Aerial Vehicle (UAV) on Gas Monitor Concentrations - Mining, Metallurgy & Exploration (2021)
By Jacob L. Brinkman, Catherine E. Johnson
Unmanned aerial vehicles (UAVs) are being explored by researchers to measure concentrations of gas emissions in situations where such measurements are otherwise extremely difficult to obtain, such as
May 20, 2021
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RI 7743 Liquid State Spectral Emissivities Of Titanium, Vanadium, Zirconium, Molybdenum, And Platinum In An Electron-Beam Furnace
By R. K. Koch
The normal spectral emissivities of liquid Ti, V, Zr, Mo, and Pt were determined at the fusion temperatures in an electron-beam furnace using a water-cooled copper hearth. The normal spectral emis
Jan 1, 1973
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Shaft Sinking Practice at Inco
By A. F. Brock
Introduction During the past ten years, shaft sinking has been going on continuously at Inco and new shafts and shaft extensions have been sunk under a broad diversity of conditions. The Murray min
Jan 1, 1950
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The future of Ni−Cu smelting in Botswana: the choice between flashsmelting and top-submerged lance furnacess
By B. Ceki, A. Mabentsela
The BCL furnace is scheduled to restart operations after being placed on care and maintenance in 2016 due to depressed nickel prices. The decision to start operations after such a stoppage ought to be
Jul 10, 2024
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IC 7974 Administration Of The Federal Coal-Mine Safety Act, 1952-59 ? Summary
By James Westfield
A brief résumé follows of activities of the Division of Coal-Mine Inspection that have had a favorable effect on health, safety, and the reduction of injuries at coal mines: 1. The Federal Mine Sa
Jan 1, 1960
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Copper Losses in Smelting and Converting
By R. W. Ruddle
The present state of knowledge on this subject may briefly be summarized as follows: (1) The copper content of the slag increases with the grade of the matte in contact with it; on the other hand, the
Jan 1, 1953
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OFR-202-82 Soil Depth Requirements To Reclaim Surface-Mined Areas In The Northern Great Plains
By Richard C. Barth
Fourteen field plots were established at active coal mines in the Northern Great Plains. A wedge was cut into spoil and backfilled with soil; soil depth ranged from 0 to 152 cm over a linear distance
Jan 1, 1982
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Comparing Simulated And Interpreted Geologic Models
By M. Rossi
Geologic ore controls are usually interpreted and modeled from cross sections and plans, as they are critical to construct meaningful and accurate ore reserves models. The geologic boundaries are oft
Jan 1, 2004
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The influence of Fe3+/Fe2+ratio on the viscosity of silicate slags
Viscosity measurement was carried out over a narrow range of silica content around the fayalite composition. A wide range of temperature and oxygen potential was covered where the slag was completely
Jan 1, 2004
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IC 7501 Safety Practices at United Verde Mine Phelps Dodge Corp., Jerome, Ariz.
By Allen D. Look, Alan A. Sharp
"INTRODUCTION The bottoming of the United Verde sulfide pipe has shortened the expected life of the United Verde mine to a matter of a few years. First located in 1876, this Arizona mine has had a lon
May 1, 1949
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Hardening of Low-Alloyed Gold
By Jörg Fischer-Bühner
Conventional 22ct Au jewellery alloys are comparably soft in the as-cast and soft-annealed state and hardening by cold-working is the only way of giving strength to the jewellery. The paper first focu
Oct 1, 2003
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Inhibition of Respiratory Burst Activity in Alveolar Macrophages by Bisbenzylisoquinoline Alkaloids: Characterization of Drug-Cell Interaction
By M. W. Barger, J. K. H. Ma, J. Y. C. Ma, V. Castronova
The objective of this study was to investigate the effects of various bisbenzylisoquinoline (BBIQ) alkaloids on respiratory burst activity of alveolar macrophages and to characterize the interaction o
Mar 1, 1992
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Operational Management For Closure And Reclamation -- Kennecott Ridgeway Mine (434d9e8f-c312-47a7-bf26-a20c5fc01595)
By R. Dorey
The Kennecott Ridgeway Mine in South Carolina is scheduled to complete mining and ore processing in the last quarter of 1999. Tailings are disposed in a 300 acre, lined tailings impoundment. To facili
Jan 1, 1999
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Hexavalent Chromium Air Dispersion Modelling In The South African Ferrochromium Industry
By L. W. Burger
The need to establish and harmonise methodologies to quantify air emissions, atmospheric dispersion and the consequences of air pollutants (especially hexavalent chromium) from the ferrochrome industr
Jan 1, 2004
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OFR-146(1)-77 Comparative Coal Transportation Costs: An Economic And Engineering Analysis Of Truck, Belt, Rail, Barge And Coal Slurry And Pneumatic Pipelines ? Volume 1 ? Summary And Conclusions ? 1.1 Project Parameters
By Michael Rieber
This study is an extension of our previous work in the area of coal transportation Its subject is the comparative costing of competing transport erodes. A wide range of costs and aspects of costs are
Jan 1, 1977
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RI 5607 Performance Of Small Industrial-Type Anthracite-Burning Stokers: ASME Code Tests ? Summary And Conclusions
By R. F. Tenney
The performances of four anthracite-burning stokers have been observed under identical 74-hp. steam boilers. Fifty runs of 12 and 24 hours' duration were made in accordance with the test code of
Jan 1, 1960
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West Coast Placer Mining
The placer mining industry of the West Coast region of the South Island is based largely around the production of alluvial gold, although other valuable minerals are also present. Since the first majo
Jan 1, 1997
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The Effect Of Grinding Environment On Floatability Of Micro-Fine Disseminated Molybdenite
Micro-fine disseminated molybdenite was ground in a laboratory stirred mill using steel media and zirconium media respectively. The floatability of ground molybdenite and slurry chemistry was investig
Sep 1, 2012
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Copper Leaching From Low Grade Copper Ores Using Alternative Leaching Systems
By Jaeheon Lee, Junmo Ahn, Jiajia Wu
In this project, low grade copper ore samples were obtained from two mining sites in the US, and they were chalcopyrite-rich (sample A) and conichalcite-rich (sample B) ore. Copper grades were 0.6% an
Jan 1, 2019
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IC 6250 Mining Practice And Methods At The United Verde Extension Mining Company, Jerome, Ariz. ? Introduction
By Richard L. D?Arcy
This paper describing the mining practice and methods at the United Verde Extension mine, Jerome, Ariz., is one of a series of papers in preparation by the Bureau of Mines presenting the mining method
Jan 1, 1930