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Articles 151 - 180 of 275
Full-Text Articles in Geology
Glaciation In Montana, Alvin H. Lense
Glaciation In Montana, Alvin H. Lense
Bachelors Theses and Reports, 1928 - 1970
Glacial deposits are increasingly entering into consideration in engineering projects, soil surveys, ground-water supply, sources for industrial materials, and other economic enterprises. In the field of engineering, glacial deposits if present must be considered in connection with reservoir sites, dam or bridge abutments, road building, and other types of construction work.
Distribution And Lithology Of Sedimentary Rocks In Montana And Adjacent Areas, Harold Kentta
Distribution And Lithology Of Sedimentary Rocks In Montana And Adjacent Areas, Harold Kentta
Bachelors Theses and Reports, 1928 - 1970
The general features of the sedimentary rocks in a region, their distribution, and the relationships of these rocks to other rocks of the area and of adjacent areas, are some of the things in which most geologists are interested, for reasons of general curiosity or for obtaining a better understanding of their specific problems
Geology Of A Kyanite Deposit Near Ennis, Montana, Clarence L. Nordstrom
Geology Of A Kyanite Deposit Near Ennis, Montana, Clarence L. Nordstrom
Bachelors Theses and Reports, 1928 - 1970
A deposit of kyanite, an aluminum silicate mineral used in the ceramic industry, occurs in the low foothills of the Gravelly range about 10 miles south of Ennis, Montana. This study deals primarily with the character and origin of the deposit, and its relationship to the surrounding rocks.
Insoluble Residues Of Five Sections Of The Amsden Formation, Wilmer R. Peterson
Insoluble Residues Of Five Sections Of The Amsden Formation, Wilmer R. Peterson
Bachelors Theses and Reports, 1928 - 1970
The term, "insoluble residue," as used in this report is that portion of the original rock sample remaining after the sample has been digested by a mixture of one part hydrocloric acid and two parts water. The remains or insoluble residue from this acid treatment may vary from nothing to I00 percent.
Economic Talc Deposits Of Montana And Related Firing Problems, Charles J. Lyden
Economic Talc Deposits Of Montana And Related Firing Problems, Charles J. Lyden
Bachelors Theses and Reports, 1928 - 1970
This thesis has to do with a study of the production of talc in Montana, describing the local geology of each deposit, and a description of the laboratory tests that were made on various grades of Montana talc in an attempt to determine why some grades of talc can be burned in solid forms while others must be ground, mixed with a binder and molded.
A Preliminary Investigation Of The Hydrometallurgy Of Philipsburg Manganese, W. L. Goodman
A Preliminary Investigation Of The Hydrometallurgy Of Philipsburg Manganese, W. L. Goodman
Bachelors Theses and Reports, 1928 - 1970
In the past the steel industry of the United States has depended almost wholly on imports for its supplies of manganese. Although it is well known that there are enormous deposits of low grade manganese ore in the United States the production of substantial amounts of ferro-grade material from domestic sources presents a field for constructive and practical research.
Vermiculite, Occurence, Character, And Concentration Of Mineral From The Pony District, Madison County, Montana, A. Saterdal
Vermiculite, Occurence, Character, And Concentration Of Mineral From The Pony District, Madison County, Montana, A. Saterdal
Bachelors Theses and Reports, 1928 - 1970
The purpose of this paper is to investigate the occurrence and character of the vermiculite deposits approximately four miles northwest of Pony; Madison County, Montana. The deposits are situated in rolling foothills at the northern end of the Tobacco Root Mountains.
The Solubility Of Zinc Ethyl Xanthate In Water, Thomas M. Mckenzie
The Solubility Of Zinc Ethyl Xanthate In Water, Thomas M. Mckenzie
Bachelors Theses and Reports, 1928 - 1970
A determination of the solubility of zinc ethyl xanthate was attempted by measuring the refractive index of a saturated solution of that salt. The small increment in refractive index effected by adding zinc ethyl xanthate to water in saturation quantities rendered measurements difficult and of dubious accuracy.
Hydrogen Overvoltage Of Cadmium Bismuth And Antimony Bismuth Alloys, Edwin W. Stevens
Hydrogen Overvoltage Of Cadmium Bismuth And Antimony Bismuth Alloys, Edwin W. Stevens
Bachelors Theses and Reports, 1928 - 1970
A method to measure hydrogen overvoltage was developed and checked with metals of known overvoltage. Alloys of bismuth and antimony and of bismuth and cadmium were prepared and their overvoltages determined.
The Electrodeposition Of Copper-Cobalt Alloys, Richard L. Dunn
The Electrodeposition Of Copper-Cobalt Alloys, Richard L. Dunn
Bachelors Theses and Reports, 1928 - 1970
An attempt was made to deposit a 50:50 copper-cobalt alloy from various sulfate electrolytes. No true 50:50 alloy was obtained but various mixtures of cobalt and copper rich crystals were deposited.
Fluorite Near Silver Bow, Montana, Charles V. Campbell
Fluorite Near Silver Bow, Montana, Charles V. Campbell
Bachelors Theses and Reports, 1928 - 1970
The wartime demand for fluorspar has caused renewed interest in fluorite deposits. Near Silver Bow, Montana, a deposit of massive, coarsely crystalline fluorspar, which has not been described in the literature, has attracted the attention of the United States Geological Survey.
Production Of Iron-Tin Compacts By Powder Metallurgy And A Synopsis Of Their Principle Properties, Matt C. Andrews
Production Of Iron-Tin Compacts By Powder Metallurgy And A Synopsis Of Their Principle Properties, Matt C. Andrews
Bachelors Theses and Reports, 1928 - 1970
This thesis is concerned primarily with the production of metal powder compacts of iron and tin. In producing these compacts, the effects of processing variables on some of the essential properties of the pellets made were investigated.
Hardness And Electrical Resistivity Of Copper-Iron Powder Metal Compacts, Fred A. Foyle Jr.
Hardness And Electrical Resistivity Of Copper-Iron Powder Metal Compacts, Fred A. Foyle Jr.
Bachelors Theses and Reports, 1928 - 1970
Although powder metallurgical methods have been used for years to fabricate tungsten and platinum, very little scientific data have been recorded until the beginning of this century. A large percentage of all commercial production at present is based upon past practice rather than upon scientific knowledge.
Age Hardening Of Copper Antimony Alloys, William R. Stern
Age Hardening Of Copper Antimony Alloys, William R. Stern
Bachelors Theses and Reports, 1928 - 1970
A large number of alloys of varying percentages of copper and antimony were prepared. These alloys were treated in various ways which might be expected to produce age hardening. The effect of cold working was studied in the range where the alloys were malleable.
An Isopach Map And Discussion Of The Marine Jurassic Of Western United Sates And Canada, John H. Ferry
An Isopach Map And Discussion Of The Marine Jurassic Of Western United Sates And Canada, John H. Ferry
Bachelors Theses and Reports, 1928 - 1970
Recent demands for petroleum to carry on the war effort have resulted in widespread prospecting in the northern Great Plains. Nearly all oil wells now drilled are of a depth to penetrate the marine Jurassic formations. It is known that these strata differ in thickness from place to place, but information of distribution, thickness, and lithology has not yet been compiled.
Electroplating Of Chromium Upon A Nickel Plated Magnesium Alloy, Harmel Dawson
Electroplating Of Chromium Upon A Nickel Plated Magnesium Alloy, Harmel Dawson
Bachelors Theses and Reports, 1928 - 1970
A nickel plating operation for magnesium alloys was investigated and proved successful in plating a small sample of a typical commercial magnesium alloy, Dowmetal J1.
Flotation Of A Complex Sulphide Ore Containing Tetrahedrite, James C. O'Dea, Lorimer W. Hoar
Flotation Of A Complex Sulphide Ore Containing Tetrahedrite, James C. O'Dea, Lorimer W. Hoar
Bachelors Theses and Reports, 1928 - 1970
The ore investigated in this thesis is a zinc-copper-lead ore. Microscopic analysis of this complex sulphide ore showed it to contain pyrite, sphalerite, arsenopyrite, galena, chalcopyrite, tetrahedrite, and covellite, with quartz as the gangue constituent.
The Electrodeposition Of Chromium From Trivalent Salt Solutions, Bahri Ersoz
The Electrodeposition Of Chromium From Trivalent Salt Solutions, Bahri Ersoz
Bachelors Theses and Reports, 1928 - 1970
The enormous number of previous experiments and researches for the improvement of the commercial chromic acid bath, did not succeed even in the partial elimination of any one of the disadvantages of chromic acid bath. This led the author to believe that the poor performance is an inherent quality of the chromic acid bath, and is due to the fact that the deposition occurs from the higher state of oxidation.
Bright Electroplating Of Copper In The Acid Bath, Elwood K. Jensen
Bright Electroplating Of Copper In The Acid Bath, Elwood K. Jensen
Bachelors Theses and Reports, 1928 - 1970
Plating of various objects with mirror-like surfaces of chromium, nickel, and other metals has expanded considerably during the past decade, and now ranks as an important enterprise, particularly with respect to the automotive industry.
The Effect Of Boron On The Hardenability Of Steel, William J. Foy
The Effect Of Boron On The Hardenability Of Steel, William J. Foy
Bachelors Theses and Reports, 1928 - 1970
Many attempts have been made to improve iron and steel and their alloys by the addition of boron. The results obtained were not encouraging for the reason that the amount of boron used, generally from 0.2 to 2.0 per cent is altogether too high. This percentage of boron renders the product hard and brittle and of late the experiments with boron in this connection have been practically abandoned.
An Attempt To Increase The Permeability And Porosity Of The Cut Bank Oil Sand By Treatment With Various Reagents, Donald H. Johnson
An Attempt To Increase The Permeability And Porosity Of The Cut Bank Oil Sand By Treatment With Various Reagents, Donald H. Johnson
Bachelors Theses and Reports, 1928 - 1970
The purpose of this investigation was to attempt to find some means of increasing the effective porosity and permeability of the producing sands of the Cut Bank Oil Field, with the hope that thereby the ultimate recovery of petroleum from this field may be increased. Although the percentage increase in production thus effected would undoubtedly be small, it would represent a substantial volume of petroleum in view of the great quantity of oil and gas present in this field.
Geology And Occurence Of Graphite At The Crystal Graphite Mine Near Dillon, Montana, Charles K.W. Hum Hum
Geology And Occurence Of Graphite At The Crystal Graphite Mine Near Dillon, Montana, Charles K.W. Hum Hum
Bachelors Theses and Reports, 1928 - 1970
The problem to be considered embraces the mineralogy and the mode of formation of a very pure and vein-like deposit of crystalline graphite. This deposit is of more than ordinary interest because in its geological relations and in the character of its graphite it shows many similarities to the famous deposits of Ceylon.
Electrolytic Deposition Of Iron, Irving M. Kenoffel
Electrolytic Deposition Of Iron, Irving M. Kenoffel
Bachelors Theses and Reports, 1928 - 1970
In this thesis the purpose was to obtain a good iron deposit from a relatively simple bath. The deposit was to be of good nature and low in Carbon content. Also included is a summary of the uses to which electrolytic iron can be put as well as a summary of work done by other researchers in depositing iron electrolytically.
Spectrographic Analysis Of Montana Limestones, Clifford A. Barkell
Spectrographic Analysis Of Montana Limestones, Clifford A. Barkell
Bachelors Theses and Reports, 1928 - 1970
Spectrographic analysis of limestones as a possible method of correlation of geologic formations is an altogether new line of investigation. As far as known the only previous work consists of a few analyses made by Fred Lines in his bachelor thesis work at Montana School of mines in the spring of 1942.
Concentration By Flotation Of A Complex Galena - Sphalerite - Chalcopyrite Ore From The Nine Mile District Near Missoula, Montana, Truxton J. Fisher, John L. Tokich
Concentration By Flotation Of A Complex Galena - Sphalerite - Chalcopyrite Ore From The Nine Mile District Near Missoula, Montana, Truxton J. Fisher, John L. Tokich
Bachelors Theses and Reports, 1928 - 1970
At the present time ore bodies being mined are becoming more and more complex in mineral association, thus presenting a more difficult problem in their concentration. Lead-zinc sulphide ores are among the more common ores which present such difficulties.
Permeability And Porosity Studies Of The Cut Bank Oil Sand, Wesley Edward Davis
Permeability And Porosity Studies Of The Cut Bank Oil Sand, Wesley Edward Davis
Bachelors Theses and Reports, 1928 - 1970
In studying the Cut Bank field and its numerous wells, it is found that dry holes are surrounded by producing wells, and also that the field as a whole is very irregular; water, oil, and gas zones in many cases following no definite pattern. In some instances, this phenomenon may be due to the lensing and thinning of the producing sands, but it is evident that this is not the only factor. Therefore, the controlling factors must be porosity and permeability.
Coal In Montana, Clifford A. Barkell
Coal In Montana, Clifford A. Barkell
Bachelors Theses and Reports, 1928 - 1970
Coal was first mined in Montana in the year 1880. For the last thirty years the mining of coal in this state has been very important-with few people realizing its value. In the mineral industry, the value of the annual production of coal is exceeded by none of the non-metallics, and only by gold, silver, and copper in the metallics. At the present time the coal production of Montana is valued at about 41000,000.00 annually.
Report Of Investigation On The Physical Characteristics Of The Oil Sands From The Cut Bank Field, Montana, V. E. Hanes
Report Of Investigation On The Physical Characteristics Of The Oil Sands From The Cut Bank Field, Montana, V. E. Hanes
Bachelors Theses and Reports, 1928 - 1970
The purpose of this research was to study the physical characteristics, mainly, porosity and permeability of the oil sands from the Cut Bank field, Glacier County, Montana. In so doing, a better understanding of the relationship of these physical characteristics to one another and to the pool itself could be obtained.
Upper Mississippian Faunas Of Western Montana, James King
Upper Mississippian Faunas Of Western Montana, James King
Bachelors Theses and Reports, 1928 - 1970
The author has made a study of an assemblage of fossils from the Blacktail Range near Dillon Montana with the purpose in view of attempting a correlation of that group with the fauna of the Big Snowy Group. Fossils have also been obtained from a limestone formation in northwestern Montana and from four different areas in the Amsden formation in central and western Montana.
Helena And Ennis Talc Deposits, Howard N. Anderson
Helena And Ennis Talc Deposits, Howard N. Anderson
Bachelors Theses and Reports, 1928 - 1970
The purpose of this report is to collect geologic data concerning two Montana talc occurrences at Helena and Ennis and to offer some explanation as to their origin. The two deposits cited are in somewhat similar lithologic settings and both possess the same mineralogical and structural features. Because of this similarity only the Helena deposit is covered in detail.