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RI 9560 - In Situ Stress At The Lucky Friday Mine (In Four Parts) 2. Analysis of Overcore Measurement From 5300 Level
By J. K. Whyatt
The U.S. Bureau of Mines conducted an overcore stress measurement on the 5300 level of the Lucky Friday Mine, Mullan, ID, to investigate the stress regime around an experimental stope in a rock-burst-
Jan 1, 2010
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RI 4188 Sidney Mine, Pine Creek Area, Shosone Co, ID
By Robert J. Hundhausen, Robert M. Gammell
"INTRODUCTION Several mining properties in the Pine Creek area of the Coeur d'Alene mining region of Idaho were examined by engineers 3/ of the Bureau of Mines in 1942. As a result, a broad program of
Feb 1, 1948
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OFR-96(1)-80 Engineering Study Of Structural Geologic Features Of The Herrin (No. 6) Coal And Associated Rock In Illinois - Volume I - Summary Report
By H. -F. Krausse
Roof failures in underground coal mines are related to the lithology and geologic structure of the roof. There are two distinct suites of roof rock above the Herrin (No. 6) Coal in Illinois, and each
Jan 1, 1979
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IC 7055 Annual Report Of The Mining Division, Fiscal Year 1938 - Introduction
The annual reports of the supervising engineer of the seven sections comprising the Mining Division are assembled in the following pages and form the annual report of the division. In planning acti
Jan 1, 1939
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RI 2570 A Float-And-Sink Method And Apparatus For Testing Coarse-Size Coal
By Byron M. Bird, Earl R. McMillan
"The method and apparatus described herein was developed at the Northwest experiment station of the Bureau of Mines, Interior Department, in cooperative research work with the University of Washington
Feb 1, 1924
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RI 3425 Progress Reports -Metallurgical Division ? 27. Ore-Testing Studies, 1937-38 (Special Methods Of Analysis And Testing And Details Of Tests On Various Ores.)
By C. W. Davis
This report follows the same general scheme as did its predecessors; it begins with a dissertation on some phase of ore-testing, continues with results of investigations of ore-treatment methods and o
Jan 1, 1938
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RI 3425 Progress Reports - Metallurgical Division ? 27. Ore-Testing Studies, 1937-38 - (Special Methods Of Analysis And Testing And Details Of Tests On Various Ores.) ? Introduction And Summary
By C. W. Davis
This report follows the same general scheme as did its predecessors; it begins with a dissertation on some phase of ore-testing, continues with results of investigations of ore-treatment methods and o
Jan 1, 1938
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IC 8479 Review Of Bureau Of Mines Coal Program, 1969 ? Introduction
By John D. Spencer
Projects aimed at achieving the least disturbance to the Nation's air, water, and land resources in the mining and utilization of coal continued to be a feature of the Bureau of Mines coal progra
Jan 1, 1970
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RI 8972 - Field Measurement and Finite-Element Modeling of Circular and Rectangular Shaft Shapes in the Coeur d'Alene Mining District, Idaho
By Michael J. Beus
This Bureau of Mines report describes a field experiment involving the sinking of two test shafts to directly compare the deformational behavior of circular and rectangular shapes. Results show that t
Jan 1, 1985
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RI 3162 Motor Gasoline Survey, August, 1931 Part I -Specification Data
By A. J. Kraemer
The twenty-fourth of a series of semiannual surveys pertaining to motor gasoline marketed in the United States was made by the Bureau of Mines in August, 1931. The first part of a report giving the re
Jan 1, 1932
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RI 8535 Treatment of Florida Surface Waters for Use in Phosphate Beneficiation
By D. A. Stanley
The Bureau of Mines conducted laboratory-scale experiments to determine whether or not surface waters with a high organic content could be purified sufficiently to be used to replace the natural high-
Jan 1, 1981
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RI 4460 Explosive Properties Of Hydrazine
By Frank E. Scott
During the past year interest in the use of hydrazine and hydrazine hydrate as a fuel has increased in the United States; For this reason it was felt to be desirable to obtain information on the explo
Jan 1, 1949
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IC 7808 Auxiliary And Supplemental Mine Rescue Equipment ? Summary And Introduction
By W. Dan Walker
In recent years the Federal Bureau of Mines tested and approved four new types of self-contained breathing apparatus and a facepiece designed for use with the McCaa 2-hour self-contained oxygen breath
Jan 1, 1957
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OFR-110-85 Improved Oxygen Sources For Breathing Apparatus - Final Report
By Peter C. Wood
This report describes research directed toward the preparation of chemical oxygen (02) sources which exhibited improved 02 storage and reaction characteristics when compared to potassium superoxide (K
Jan 1, 1983
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RI 4498 Pilot-Plant Production Of Steel From Sponge Iron
By W. W. Stephens
As part of the Bureau of Mines program directed toward more effective utilization of the mineral resources of the United States, a number of processes for production of sponge iron have been investiga
Jan 1, 1949
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IC 9386 A Personal Computer Program And Spreadsheet For Calculating The Coal Mine Roof Rating (CMRR)
By Jennifer Riefenberg
A family of personal computer programs that calculate the Coal Mine Roof Rating (CMRR) has been developed by the U.S. Bureau of Mines. The CMRR rock mass classification system provides a link between
Jan 1, 1994
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Thermodynamic, Electrical, Physical, And Compositional Properties Of Seeded Coal Combustion Products
By H. F. Feldmann
This work was done to provide thermodynamic, electrical, physical, and compositional data on the seeded combustion plasmas of seven coals for the design of MHD generators. The systems were assumed to
Jan 1, 1970
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RI 9571 - In-Mine Evaluation of Catalyzed Diesel Particulate Filters at Two Underground Metal Mines
By Winthrop F. Watts
The U.S. Bureau of Mines evaluated the performance of a catalyzed diesel particulate filter (CDPF) and a CDPF combined with a diesel oxidation catalyst (DOC) at two metal mines. This report describes
Jan 1, 2010
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OFR-48-76 Design Of Reuseable Explosion-Proof Bulkheads For Crosscut Refuge Chamber ? Summary
By Kenneth R. Maser
This report describes a research and development program sponsored by the United State s Bureau of Mines. The purpose of the program was to develop reusable explosion-proof bulkheads for a cross-cut e
Jan 1, 1975
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Inertial, Gravitation, Centrifugal and Thermal Collection Techniques
By V. A. Marple, K. L. Rubow, B. A. Olson
"INTRODUCTION Inertial classification, gravitational sedimentation centrifugation, and thermal precipitation arc techniques that can be used to collect particles for subsequent analysis or for particl
Nov 1, 1995