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OFR-83(1)-78 XVI International Conference On Coal Mine Safety Research - I Electrical Apparatus - Study Of Means For Increasing Intensity Of Current That Can Circulate Through An Intrinsically Safe Resistive Circuit - Introduction
By A. Monomakhoff
If a conductor traversed by an electric current is broken, a conduction forms in the air between the two broken ends of the wire. This conduction manifests itself in an initial phase by an electric sp
Jan 1, 1975
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Application Of Background Oriented Schlieren (BOS) For The Qualitative Analysis Of Flow Through A Regulator
The schlieren technique describes an optical analysis method designed to enhance light distortions caused by air movement. The ability to visualize air flow has significant implications for analyzing
Jan 1, 2011
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Sustainability Rise through Process Improvement from the Industrial Revolution to the Present
By H. J. McQueen
Mineral and energy resource consumption were continuously reduced by process improvements as chemical understanding was developed and applied. During the past two centuries, technological improvements
Jan 1, 2012
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Technology News - Impoundment Project Protects West Virginia Citizens
Breaks in coal slurry impoundments can threaten the lives and health of area residents, destroy homes and businesses and contaminate water supplies. This dangerous potential looms over coalmining reg
Jan 1, 2005
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National Economy In The Third And Fourth Quarters And 1985 World And U.S. Mineral Production Estimates - Third-Quarter National Economic Statistics
By Keith L. Harris
Economic activity in the United States picked up in the third quarter, according to the latest estimate released by the Department of Commerce. Real gross national product (GNP)--the Nation's out
Jan 1, 1985
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Critical Materials Traceability: More Important Than Metallurgy
By J. R. Goode
Up to one half of neodymium and praseodymium production, key ingredients in permanent magnets, is produced illegally. About 60% of cobalt production, critical in lithium-ion batteries and other applic
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IC 8624 A Computer Program For Clustering Data Points On The Sphere
By Robert J. Shanley
The computer program, HYBMODE, has been developed to meet the need for a fast and economical method for clustering data points on the sphere. The algorithm used in this development is an extension of
Jan 1, 1974
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RI 4932 Nonmetallic Deposits Accessible To the Alaska Railroad as Possible Sources of Raw Materials for the Construction Industry
By F. A. Rutledge, J. J. Mulligan, W. H. Kems, R. L. Thome
"As a part of the United States Department of the Interior program for the development and use of Alaska raw materials, the Bureau of Mines is conducting an investigation of deposits f nonmetallic min
Mar 1, 1953
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Experimental Design to Maximize Granite Sawing Waste Content in Ceramic Tiles
By M. I. Brasileiro
The use of experimental design to the study of mixtures has found a wide range of applications, even in laboratory scale or in industrial development works. The aim of this work was to maximize granit
Jan 1, 2009
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The Reception of Ceramic Aluminum Silicate Refractories
By B. P. Sereda
The properties, characteristics and phase structure of chamotte refractories produced with the usage of mullitecorund chamotte and caoline have been given. The comparison of new refractory C-45 obtain
Jan 1, 2010
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Slag-Metal Equilibria in Tin Smelting
The distribution of tin and iron between slag and metal phases at about 1150°C was studied in pot scale experiments. The distribution coefficient k = (Sn/Fe) In metal X (Fe/Sn) in slag was found
Jan 1, 1966
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List of BOM Publications and Articles 1975-01-01 to 1979-12-21 with Subject and Author Index - Special Publiocation
By Shelby Z. Palya
"The Bureau of Mines was established in the public interest to conduct inquiries and scientific and technologic investigations concerning mining and the preparation, treatment, and utilization of mini
Jan 1, 1981
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The Carbon-Iron Diagram.
By Henry M. Howe
PART I. § 1. Introduction. After giving certain definitions, this paper gives the reasons which led to Roozeboom's form of the diagram of the freezing-point curves and general equilibrium of the
Jan 7, 1908
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Geology and the Search for Mineral Deposits
For the purposes of this discussion it is assumed that contributors should express the thoughts that arise from their personal experience. So wide is the range of mineral deposits, and so varied the m
Jan 1, 1950
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The Waterview Connection Project – Progress to Date
By S Hanke, J Burden, P Spies
The Waterview Connection will complete Auckland’s long-planned Western Ring Route, a 48 km north-south motorway alternative to State Highway 1 that bypasses the central city to the west. The project i
Sep 17, 2014
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Closed Loop WEEE Recycling? Challenges and Opportunities for a Global Recycling Society
By C. E. M. Meskers
End-of-life Electronic and Electrical Equipment, o_cially called WEEE, is unjustly regarded as mainly a waste management problem. What is structurally overlooked is the enormous resource impact of the
Jan 1, 2009
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Characterisation studies of Tectonised Clay shales and implications in the excavation of large size tunnels
By Marco Barla, Mariacristina Bonini, Giovanni Barla
ABSTRACT: The paper describes the characterisation studies of Tectonised Clay Shales at laboratory and in situ scale. The interest relates to tunnelling under squeezing and swelling conditions, in Ita
Jan 1, 2003
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OFR-31-77 Evaluation Of Resin And Mechanical Roof Bolting Systems For Strata-Bound Deposits
By G. H. Bennett
A field experiment was performed in a production unit of an operating copper room and pillar mine to compare the support capabilities provided by resin and mechanical roof bolts. Resin and mechanical
Jan 1, 1974
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RI 4696 Investigation Of Smuggler Lead-Zinc Mine Aspen, Pitkin County, Colo.
By M. E. Volin
The Smuggler is one of the mines in the Aspen district, located the central part of Pitkin County, Colo. It was first examined in July 1943 by C. R. Wilfloy, former mining engineer of the Bureau of Mi
Jan 1, 1950
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Utilization of Aluminum Slag for the Expansion of Lightweight Concrete
By Xuan Li
Aluminum slag is generated when aluminum metals are recycled through a smelting process in the presence of salt. There are small amounts of aluminum metals trapped in the aluminum slag. This research
Jan 1, 2010