Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
IC 9303 A Platinum-Group Metals Consumption And Recycling Flow ModelBy Jr. Gabler
World resources of platinum-group metals appear ample for the foreseeable future; however, political and economic events in the last two decades have caused concern over the availability and reliabili
Jan 1, 1991
-
RI 8804 - Concrete Crib Design and Field TestingBy T. W. Smelser
This Bureau of Mines report presents a review of underground testing, test results, and design guidelines of steel-fiber-reinforced concrete (SFC) mine support (cribbing) developed at the Spokane Rese
Jan 1, 1983
-
RI 5735 Process Development In Removing Sulfur Dioxide From Hot Flue Gases (In Four Parts) 1. Bench-Scale Experimentation ? SummaryBy D. Bienstock
In connection with air-pollution studies, the Bureau of Mines is cooperating with the U.S. Public Health Service in investigating the use of solids for removing sulfur dioxide in concentrations of les
Jan 1, 1961
-
IC 7282 Tentative Inspection Standards for Anthracite Mines"INTRODUCTION These inspection standards have been prepared for use as a guide for the Federal inspection of anthracite mines. They are a revision of ""Tentative Inspection Standards for Anthracite Mi
May 1, 1944
-
RI 4445 Beneficiation Of Oxide And Silicate Manganese Ores From Crook, Albany, And Washakie Counties, Wyo.By B. K. Shibler
As a part of the Bureau of Mines' intensive; 'investigation of domestic manganese deposits, ore-dressing studies were conducted on three samples of oxide and silicate manganese ores from var
Jan 1, 1949
-
RI 5749 Discharge Behavior In Vacuum Arc Melting ? SummaryBy F. W. Wood
A program of research was conducted by the Bureau of Mines to investigate anomalies in electrical-discharge behavior during consumable-electrode arc melting of titanium and to study the effects of the
Jan 1, 1961
-
OFR-7-78 Improving Coal Mine Roof Stability By Pillar SofteningBy Bruce Maxwell
The deformation modulus of coal mine pillars theoretically can be reduced by drilling holes in advance of the mining face. This reduction of modulus along the edge of the pillar has the effect of decr
Jan 1, 1977
-
IC 6457 HafniumBy Paul M. Tyler
Hafnium appears to be among the more abundant of the newly discovered elements . Though quite widely distributed in nature , its compounds chemically so resembled those of zirconium , its sister eleme
Apr 1, 1931
-
RI 9548 - Dust Sources and Controls for Multiple-Machine Longwall FacesBy Jay F. Colinet
Longwall mining in lower seam heights may necessitate the use of single-drum shearers to overcome size constraints associated with standard double-drum shearers. To avoid the operational problem of cl
Jan 1, 2010
-
RI 9032 - Removal of Alkalies From Portland Cement Kiln DustBy R. D. Wilson
Ten to twelve million tons of dust is produced by cement kilns annu-ally in the United States, resulting in a serious waste disposal problem. The Bureau of Mines investigated two alkali volatilization
Jan 1, 1986
-
IC 7077 Mining And Milling Methods And Costs At The Tennessee-Schuylkill Corporation Mine, Chloride, Ariz. ? IntroductionBy Jacob Schoder
This is one of a series of papers published by the Bureau of Mines on mining and milling methods and costs. The Tennessee-Schuylkill Corporation, Chloride, Ariz., mines and mills a lead-zinc ore co
Jan 1, 1939
-
RI 4001 Chromiferous Sand Deposits in the Coos nay Area, Coos County, OregBy Robert J. Hundhausen
During the early part of World War II , it appeared likely that supplies of chromite for United States industry might become critically short . As a part of the ensuing search for new sources of domes
Feb 1, 1947
-
RI 3571 Carbonaceous Cation And Anion Exchangers In Water Treatment ? IntroductionBy S. J. Broderick
[The discovery in 1934 that carbonaceous materials, such as coal, peat, and lignite, when treated with concentrated sulfuric acid, were given cation or bate-exchange properties opened up a field of ne
Jan 1, 1941
-
RI 4389 Concentration Of Oxide Manganese Ores From Northeastern Utah, Daggett Chief And Gray Hawk PropertiesBy R. Havens
During the course of the investigation of possible domestic sources of manganese, engineers of the Bureau of Mines examined and sampled two manganese mineral deposits in northeastern Utah. The Dagget
Jan 1, 1949
-
RI 9138 - Recovery of Cobalt and Copper From Complex Sulfide ConcentratesBy R. O. Dannenberg
The Bureau of Mines conducted laboratory investigations with the objective of developing an alternative process for recovering cobalt and copper from complex sulfide concentrates. Processes currently
Jan 1, 1987
-
RI 5187 Preliminary Investigation Of The Takilma-Waldo Copper District, Josephine County, Oreg. ? IntroductionBy R. J. Hundhausen
The Takilma-Waldo copper district in Josephine County, Oreg., was studied by the Bureau of Mines from September 1950 to April 1.951 and from December 1953 to April 1954. Funds for the investigation we
Jan 1, 1956
-
RI 5880 Preparation And Metallic Reduction Of Rare-Earth Halides And Oxides ? SummaryBy T. T. Campbell
This report traces the development of techniques for the preparation of high-purity rare-earth metals. Rare-earth metals, excepting samarium, europium, and ytterbium, were prepared by converting their
Jan 1, 1961
-
IC 7879 Sinking Methods And Cost At The Burgin Shaft, Bear Creek Mining Co., East Tintic Project, Utah County, Utah ? SummaryBy F. D. Everett
The Burgin shaft of Bear Creek Mining Co. near Eureka, Utah, was sunk during 1956 and 1957 as part of an exploratory program, searching for lead, zinc, copper, silver, and gold ore bodies hidden from
Jan 1, 1959
-
IC 7785 Studies On The Development And Control Of Coal-Dust Explosions In Mines - SummaryBy Irving Hartmann
The Experimental Coal Mine of the Bureau of Mines has served principally as a valuable and unique testing laboratory for studies of the explosibility of coal dust and mine gas; studies of the numerous
Jan 1, 1957
-
RI 3410 Porosity Of The Sundance Sand In The Lance Creek Oil Field, Wyoming ? IntroductionBy H. Dale Nichols
[The growing importance of the Sundence (Jurassic) formation an a source of oil, in the Rocky Mountain area has prompted the making of a series of porosity determinations of core samples collected. fr
Jan 1, 1938