Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
IC 6999 Laboratories That Make Assays, Analyses, And Tests On Ores, Minerals, And Other Substances ? IntroductionBy C. W. Davis
Before listing the laboratories and the work performed there, it is proper to make clear what is done and what is not done by Federal bureaus, States, and Territories, as well as by countries to the n
Jan 1, 1938
-
RI 3369 Relation Of Dust Concentration To Depth Of Hole During Wet DrillingBy J. B. Littlefield
This study is one of at number conducted to determine the concentration of dust in the air during the complete cycle of operation in wet drilling; information as to various factors connected with, dri
Jan 1, 1938
-
MLA 34-81 - Mineral Investigation Of The La Panza Rare II Area (No. 5109), San Luis Obispo County, California ? SummaryBy Donald J. Barnes
Gold was found in samples collected from Pleistocene and Holocene stream and terrace deposits. Approximately 15,000 cu yd (11,400 cu m) of small and discontinuous terrace and stream gravel deposits in
Jan 1, 1981
-
Noise controls for roof bolting machines - IntroductionBy P. Kovalchik
The Bureau of Labor Statistics (BLS) classifies hearing loss as a separate illness category. Hearing loss accounted for 11% of all illnesses in 2005 (U.S. Department of Labor Bureau of Labor Statistic
Jan 1, 2008
-
IC 7154 Strategic Minerals Investigations - Progress Report On Exploration Of Tin Deposits ? IntroductionIn connection with tin strategic minerals investigations of the Bureau of Mines and the Geological Survey under authority of the Strategic Materials Act (Public 117, 76th Cong., 1st sess.) a study is
Jan 1, 1941
-
IC 7390 Description of the Eickhoff-Schriimlader Longwall Coal-Cutting and Loading MachineBy EINAR M. ARENTZEN
This information circular. deais primarily with an engineering descrip- tion of a type of longwall cutting and loading machine developed by Eick- hoff Maschinenfabrik, Bochum, Germany..: This machine
Dec 1, 1946
-
RI 9047 - Effect of Alloying Elements on Oxidation of Low-Chromium AlloysBy Je M. Oh
The Bureau of Mines is conducting research to determine the high temperature oxidation resistance of substitute stainless steels (SS) containing two less strategic elements, Al and Si, instead of Cr.
Jan 1, 1986
-
RI 3360 Bureau Of Mines Midget Impinger For Dust Sampling - IntroductionBy J. B. Littlefield
The Greenburg-Smith impinger was developed at the Bureau of Mines in cooperation with the United States Public Health Service in 1922 in the course of an investigation of dust-sampling instruments ava
Jan 1, 1937
-
IC 6166 Accident Cost And Mine SafetyBy E. H. Denny
The coal and metal mines of the United States furnish this country with a large part of the fuel and material necessary to support our industries and thus make possible the welfare and prosperity of o
Jan 1, 1929
-
RI 2779 Stream Measurement In Relation To Mine DrainageBy Maust. E. J., W. R. Crane
"IntroductionIn the study of mine drainage in the red iron ore mines of the Birmingham district of Alabama, an extensive series of measurements were made in order to determine the drainage from the ar
Oct 1, 1926
-
RI 9274 - Determining the Relative Toxicity and Smoke Obscuration of Combustion Products of Mine CombustiblesBy Maria I. De Rosa
Combustible materials, when burned, produce toxic gases and smoke, which may vary dramatically from one material to another, with resultant different total toxicity and smoke obscuration levels. This
Jan 1, 1989
-
IC 6799 Mining Methods And Costs At Herron And Laster Lease, Superior, Ariz. ? IntroductionBy E. D. Gardner
About 300 tons of gold ore per week was being produced in February 1934 by Thomas D, Herron and Con Laster from the old lake Superior and Arizona workings; the ground was leased from the Magma Copper
Jan 1, 1934
-
RI 5675 Field Test For Cesium And Rubidium ? Summary And IntroductionBy K. C. Dean
A semiquantitative test for the presence and identification of cesium and rubidium in rocks, clays, and mineral waters has been developed by the Bureau of Mines. The test can be used in the field, as
Jan 1, 1960
-
Objectives And Constraints Of Through - The-Earth Electromagnetic Communication SystemsBy Howard E. Parkinson
In 1969, new coal mine health and safety legislation was enacted in the United States. As a result of this legislation, the Department of Interior, Bureau of Mines has carried out communications resea
Jan 1, 1973
-
RI 6714 Copper Extraction From A Low-grade Ore By Ferrobacillus Ferrooxidans - Effect Of Environmental And Nutritional FactorsBy John D. Corrick
The environmental and nutritional characteristics necessary for maximum copper extraction from a low-grade ore by Ferrobacillus ferrooxidans have been explored as have many of the limiting parameters.
Jan 1, 1965
-
RI 3369 Relation Of Dust Concentration To Depth Of Hole During Wet Drilling (4f739da7-f0fb-40d7-b759-3e66a04bbf5a)By J. B. Littlefield
This study is one of a number conducted to determine the concentration of dust in the air during the complete cycle of operation in wet drilling information as to various factors connected with drilli
Jan 1, 1938
-
IC 6525 Mining Practice And Costs At The Vipond Mine, Timmins, Ontario, Canada ? IntroductionBy Robert E. Dye
This paper describing the mining methods employed and setting forth prevailing, costs at the property, is one of a series being prepared by the United States Bureau of Mines dealing with properties in
Jan 1, 1931
-
RI 2189 Fuel Wastes in Oil Fields Boilers for Drilling and ProductionBy A. W. Ambrose
"Introduction.Oil-field operations have often been carried on under great stress and haste, in which the prime purpose has been to put the wells down rapidly as possible, without regard to a few of th
Nov 1, 1920
-
IC 9057 Evaluation Of Sensitive Ground Fault Interrupters For Coal MinesBy Michael R. Yenchek
Contacts with energized conductors are a major cause of electrocutions in underground coal mines. Sensitive ground fault interrupters (GFI's) installed on in-mine three-phase ac utilization circu
Jan 1, 1985
-
RI 5680 Flammability Limits Of Methyl Ethyl Ketone And Methyl Isobutyl Ketone In Bromochloromethane-Air Mixtures - SummaryBy M. G. Zabetakis
At ordinary temperatures and pressures methyl ethyl ketone (MEK)-air mixtures containing between 2.0 and 11 vol.-pct. MEK and methyl isobutyl ketone (MIBK)-air mixtures containing between 1.5 and 7.5
Jan 1, 1960