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The Scientific Rationale For A Lower Radon Daughter Exposure
By Rafael Moure
On April 21, 1980 the Oil, Chemical and Atomic Workers Union (OCAW) submitted a petition urging the revision of the Mine Safety and Health Administration (MSHA) permissible exposure limit to radon dau
Jan 1, 1981
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Surface Chemistry Of Collectorless Flotation Of Chalcopyrite
It was shown previously that chalcopyrite could be floated without using a collector when the ore samples were treated with small amounts of sodium sulfide (Na2S). The role of this reducing agent was
Jan 1, 1983
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Fuel Acquisition And Use Independent Power Projects
By F. G. Hyde
Passage of the Public Utilities Regulatory Policy Act ("PURPA") in I 978 created an entirely new industry that is referred to today as the Independent Power Producers ("IPP"). Requirements of project
Jan 1, 1996
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Surface Movement In The Vicinity Of Pillars Left In Gob Areas
By John C. Draper
Little precise information is available on the effect of mining on the surface topography. It is often assumed that after mining the surface will simply sink. This is not an infallible conclusion as i
Jan 1, 1964
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Gypsum in Canada - present status and future developments
By G. C. Adams, J. H. Fowler
Canada's gypsum industry began more than 200 years ago in the Maritime provinces when farmers attempted to supplement their incomes by selling "land plaster" to traders bound for the United State
Jan 1, 1987
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Some Design Aspects Of Large Uranium Mills ? 1. Introduction
By D. J. McParland
This paper will deal with some of the considerations which, were involved in the design and construction of the uranium mills in the Elliot Lake area . These plants, eleven in number, range from 1500
Jan 1, 1959
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Supply And Demand Of Hydrocarbons - Trends And Forecasts - Implications For Power Generation
By A. E. Foscolos
British Petroleum (BP, 2005), indicates that world reserves for oil to be 1198 billion barrels, for natural gas the equivalent of 1156 billion barrels of oil and for coal the equivalent of 3219 billio
Jan 1, 2006
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Performing Zero-Base Staffing & Budget Analysis to Create Value at a Mine
By A. P. Schissler
2013 has seen metals, industrial minerals, and coal all reduce in price due to market and geo-political factors. Many companies are taking write-downs to recalibrate their reserves and have enacted fo
Feb 23, 2014
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Annual Review 2011 Mining And Exploration Overviews - Exploration Review
By D. R. Wilburn
his summary of international mineral exploration activities for the year 2011 draws upon available information from industry sources, published literature and U.S. Geological Survey (USGS) specialists
Jan 1, 2012
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Service Life Prediction for the Ohio River Bridge East End Crossing Tunnel
"The Ohio River Bridge East End Crossing Tunnel requires a 75-year service life of its cast-in-place reinforced concrete lining. This twin-tube 3-lane (each tube) highway tunnel is about 55-ft wide an
Jan 1, 2016
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Safety Climate in MT Mining: A Case Study - Mining, Metallurgy & Exploration (2021)
By Scott Rosenthal, David Gilkey, Michael McGivern, Lorri Birkenbuel, Daniel Autenrieth, Ty Murphy, Hadi Aldossari
A safety climate case study was carried out at a surface metal mine where investigators administered the Liberty Mutual Short Scale Safety Climate Survey to 365–368 miners to measure safety climate in
Aug 13, 2021
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Horse: Value-Based Objective Functions Applied to Circuit Analysis
By A. Noble
Linear circuit analysis (LCA) is a fundamental tool which has been used to evaluate mineral separation circuits during the preliminary design phase. Traditionally, the LCA methodology uses the analyt
Feb 23, 2014
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Studies on Recovery of Iron From the Tailings of Arcelormittal Concentrator Plant, Serra Azul, Brazil
By U. B. Kodukula
The iron ore beneficiation plant at Serra-Azul Mines of ArcelorMittal, Brazil operates at a rated capacity of 3.2 million tons per year. The ore is concentrated using magnetic separation, jigging, hy
Feb 23, 2014
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World’s largest hydraulic shovel, O&K’s RH 300, now operating at Chuquicamata, world’s largest copper mine
By Tim Neil, O&apos
Large is the applicable adjective here. The largest hydraulic shovel in the world, the largest copper mine in the world, the largest copper producing company in the world. The O&K RH 300 hydraulic
Jan 1, 1988
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Fan Requirements in the Second 100 Years of a Mine Life
By A. Haghighat
The Missouri University of Science and Technology?s (Missouri S&T) Experimental Mine is a teaching and research facility which has been excavated in limestone by mining engineering students over almos
Feb 23, 2014
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A Review of Digital Transformation in Mining Mining, Metallurgy and Exploration
By Pratt Rogers, Aaron Young
Digital transformation (DT) is the process by which entities adapt themselves to modern technology. As digital technology becomes more prevalent (automation, cameras, sensors, touchscreens, artificial
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Pelletizing Of Iron Ore Concentrates Hith Peat Moss Binder
By L. J. Vincze
The program of study of pellet binder materials was begun by the ORF in 1963 to examine various Canadian materials as substitutes for bentonite which is imported in large tonnages (199,270 tons in 196
Jan 1, 1971
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Technical Approach to Lining Design for Internal Pressure and Fault Offsets on the JWPCP Effluent Outfall Tunnel
By Jan Van Greunen, Mark Vanderzee, David Haug, Geoffrey Hughes, Yiming Sun, Roozbeh Geraili Mikola
"The Sanitation Districts of Los Angeles County is planning to construct a new, approximately 7-mile-long (11.3 km) effluent outfall tunnel to be excavated by TBM and lined with precast concrete segme
Jan 1, 2016
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Operations Research Techniques As Applied In The Petroleum Industry
By J. S. Aronofsky
The areas are identified where the techniques of operations research have been applied in the petroleum industry. Particular emphasis is given to the linear program models that have been used for solv
Jan 1, 1962
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Building High Performance Teams And Enhancing Cash Flow
By W. M. Hart
Business Process Improvement (“BPI”) Change to Survive “It is not the strongest of species that survive, nor the most intelligent, but the one most responsive to change.” [Charles Darwin]
Jan 1, 2006