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Articles 2281 - 2310 of 2617

Full-Text Articles in Materials Science and Engineering

Geology And Mineral Deposits Of Idaho: A Summary, Paul B. Bronken May 1947

Geology And Mineral Deposits Of Idaho: A Summary, Paul B. Bronken

Bachelors Theses and Reports, 1928 - 1970

The great diversity on mineral wealth in Idaho establishes it as one of the principle mining states in the union. Mining first began in the state with the discovery of placer gold in the Pierce City district in 1861, and since that date has become one of the leading industries of the state.

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Upper Cretaceous Sediment In Montana, Frank J. Frankovich May 1947

Upper Cretaceous Sediment In Montana, Frank J. Frankovich

Bachelors Theses and Reports, 1928 - 1970

Cretaceous sediments in Montana record events during a period of unusual geologic interest. After a long period of extensive submergence of the area during Jurassic time, came a period of varying continental and marine deposition with consequent variations in the types of sediments laid down. A study of these variations, their extent, and their cause has been the primary object of this thesis.

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The Problem Of The Tensleep Sandstone, George D. Mccarthy May 1947

The Problem Of The Tensleep Sandstone, George D. Mccarthy

Bachelors Theses and Reports, 1928 - 1970

Sandstone is probably one of the most important groups of rocks in existence today. The economic importance of so insignifi­cant a thing as a mass of sand grains grows with the true reality of the situation. By increasing our knowledge of grains of sand, or particles of sandstone in all their ram­ifications, it would undoubtedly reflect upon our everyday life by increasing commercial possibilities of an undevel­oped natural resource of Montana.

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Isopach Maps And Discussion Of The Ordovician And Devonian Of Montana And Adjacent Areas, Arden F. Blair May 1947

Isopach Maps And Discussion Of The Ordovician And Devonian Of Montana And Adjacent Areas, Arden F. Blair

Bachelors Theses and Reports, 1928 - 1970

The intensive postwar search for new petroleum horizons has resulted in widespread prospecting in the northern Great Plains. No commercial production has as yet been derived from Ordovician or Devonian rocks in Montana, but the relat­ively few tests that have penetrated to critical depths have disclosed encouraging conditions which merit further consider­ation, especially in Devonian strata.

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Occurrence Of Native Copper Near Jefferson City, Montana, Terence G. Kirkland May 1947

Occurrence Of Native Copper Near Jefferson City, Montana, Terence G. Kirkland

Bachelors Theses and Reports, 1928 - 1970

Sometime prior to 1870, a group of prospectors made what was believed to be a "rich strike' on one of the tributaries of Prickly Pear Creek in Jefferson County, Montana. Instead of striking it rich, they had uncovered a native copper deposit, worthless to them because of its limited extent and remote location, but now of much interest to the geologist, and to the mining engineer because of its possible commercial value.

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Electro-Deposition Of Iron From A Chloride Bath, Charles W. Noon May 1947

Electro-Deposition Of Iron From A Chloride Bath, Charles W. Noon

Bachelors Theses and Reports, 1928 - 1970

Iron was electro-deposited from a ferrous chloride bath. Studies were made of deposits formed when current density was varied, and fin­ally when both current density and temperature were changed. An attempt was made to lay the ground work for a long range study of the chloride bath, and to determine the most simple conditions possible for obtaining a smooth, even, and thick deposit.

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General Geology And Mines Of Northwestern Montana, Robert L. Sandvig May 1947

General Geology And Mines Of Northwestern Montana, Robert L. Sandvig

Bachelors Theses and Reports, 1928 - 1970

The five counties discussed in this paper compose the northernmost and westernmost counties in Montana. On the eastern boundary are Glacier National Park and the Continental Divide; on the southern boundary are Missoula and Powell counties; Idaho lies on the southwestern and western side; and the Canadian border lies along the northern edge. The region is on the Pacific Ocean side of the Rocky Mountains. Three major rivers, the Clark Fork, the Flathead, and the Kootenai drain this area into the Columbia River.

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The Anodic Polishing Of Copper In Solutions Of Orthophosphoric Acid, Robert E. Sullivan May 1947

The Anodic Polishing Of Copper In Solutions Of Orthophosphoric Acid, Robert E. Sullivan

Bachelors Theses and Reports, 1928 - 1970

The electrolytic cleaning of metals by anodic methods has been known for many years. It was recognized long ago that when the temperature and concentration of the electro­lyte were properly regulated, bright clean surfaces were obtained.

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A Preliminary Investigation Of Chromite, Lester C. Brown May 1947

A Preliminary Investigation Of Chromite, Lester C. Brown

Bachelors Theses and Reports, 1928 - 1970

The purpose of this thesis was to study the effects of cryolite and a mixture of cryolite and aluminum oxide on a chromite concentrate with special reference to the ability to break the bond between the ferrous iron and chromic oxide in the chromite.

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Glaciation In Montana, Alvin H. Lense May 1947

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.

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Distribution And Lithology Of Sedimentary Rocks In Montana And Adjacent Areas, Harold Kentta May 1947

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

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Geology Of A Kyanite Deposit Near Ennis, Montana, Clarence L. Nordstrom May 1947

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.

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Laboratory Model Shaking Table; An Investigation Of Defects And Suggested Improvements, George C. Horak Mar 1947

Laboratory Model Shaking Table; An Investigation Of Defects And Suggested Improvements, George C. Horak

Bachelors Theses and Reports, 1928 - 1970

The laboratory model is considered in this thesis. Information gained from this investigation has not been trans­ferred to the larger industrial machines. Some of the factors noted concerning the efficiency of the laboratory shaking table are inherent in this small scale model only.

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Insoluble Residues Of Five Sections Of The Amsden Formation, Wilmer R. Peterson Jan 1947

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.

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Effect Of Chromium, Molybdenum, Tungsten, And Vanadium Additions On The Physical Properties Of 1.4 Percent Titanium-Copper, Edward Palmer Patterson Jan 1947

Effect Of Chromium, Molybdenum, Tungsten, And Vanadium Additions On The Physical Properties Of 1.4 Percent Titanium-Copper, Edward Palmer Patterson

Masters Theses

"Titanium, an element reported to be ninth most abundant of the elements in the earth's crust, has received very little experimental attention as an alloying element in non-ferrous metallurgy. In copper, titanium produces an age-hardening effect, which makes it of great value to copper manufacturers of fabricated products. Yet, but a handfull of men have investigated the copper-titanium equilibrium diagram, and the titanium rich portion of the diagram still remains a mystery. No work has been done on ternary alloys of copper-titanium to this date, as far as recorded information is concerned, and it is hoped that the present work …

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An Investigation Of Various Properties Of The 60co-40cr Alloy, Roger David Moeller Jan 1947

An Investigation Of Various Properties Of The 60co-40cr Alloy, Roger David Moeller

Masters Theses

"The binary alloys of Co-Cr have had a few practical applications in our modern economy due to their high cost. The only extensive field of application has been developed in recent years in the manufacture of high temperature alloys for such equipment as gas turbines, jet engines, and turbo-superchargers. The use of these materials has been limited, due to their high cost, to small parts such as rotor blades in gas turbines. To reduce cost and to add desirable or eliminate undesirable properties, the binary alloys have, from the beginning, been modified with varying amounts of other metals. The modified …

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The Solubility Of Copper In High-Iron And Low-Iron Slags, Charles Burroughs Gill Jan 1947

The Solubility Of Copper In High-Iron And Low-Iron Slags, Charles Burroughs Gill

Masters Theses

"A thesis giving the details of construction of a rotating induction furnace and its use to experimentally determine the amounts of copper absorbed in high-iron and low-iron slags at various temperatures. A rotating induction furnace is advantageous for slag study in that the slag is contained in a molten pure metal cup and does not come in contact with any refractory, which would be attacked by the slag and contaminate it. The molten pure metal cup is formed by melting the pure metal in a refractory crucible and spinning this inside an induction coil. The induction coil supplies heat for …

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A Study Of Certain Properties Of A Cobalt-Chromium-Manganese Alloy For High Temperature Service, Robert Lewis Ray Jan 1947

A Study Of Certain Properties Of A Cobalt-Chromium-Manganese Alloy For High Temperature Service, Robert Lewis Ray

Masters Theses

"The vast amount of attention that has been given to the development of high-temperature service alloys since about 1940 has resulted in the production of numerous compositions for many elevated temperature applications. Particularly in the aircraft industry, with the jet engine, and the power industry, with the gas turbine, have these applications been most demanding. War research has developed a large number of high-temperature service alloys, many of which are in use today, and the alloy ingredients vary widely...it may be readily be seen that there is no one alloy, or one system of alloys which has been developed that …

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Beneficiation Of A Zinc Rich Oxidized Ore From Nuevo LéOn, MéXico, Jorge Casas Nieto Jan 1947

Beneficiation Of A Zinc Rich Oxidized Ore From Nuevo LéOn, MéXico, Jorge Casas Nieto

Masters Theses

"Rich zinc ores are relatively rare now in this country but are still abundant in countries like México, that have not yet developed all their mineral potentialities. In almost all Mexican zinc districts there has been reported sporadic production of oxidized ores, although until now no specially designed plants have been built for the beneficiation of such ores. Generally the zinc carbonate and zinc silicate ores are hand picked and shipped to this country for beneficiation. The Mexican production of zinc ores has never been steady, because of economic factors such as bad transportation systems and lack of market for …

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An Investigation Into The Adaption Of The Induction Furnace For Determining The Equilibrim Diagram Of The System Cu2s-Fes, John R. Cole May 1946

An Investigation Into The Adaption Of The Induction Furnace For Determining The Equilibrim Diagram Of The System Cu2s-Fes, John R. Cole

Bachelors Theses and Reports, 1928 - 1970

This investigation was started in an effort to find an accurate and efficient method of determining the freezing points of ferrous and cuprous sulphides, mixtures of the two substances, and from this to establish the liquidus line of the equilibrium dia­gram.

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Economic Talc Deposits Of Montana And Related Firing Problems, Charles J. Lyden May 1946

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.

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A Preliminary Investigation Of The Hydrometallurgy Of Philipsburg Manganese, W. L. Goodman May 1946

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.

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The Age Hardening Of Copper-Manganese-Nickel Alloys, William James Barnett Jan 1946

The Age Hardening Of Copper-Manganese-Nickel Alloys, William James Barnett

Masters Theses

"The Bureau of Mines in conjunction with their Electrolytic Manganese Alloys program has developed a series of age hardening copper-manganese-nickel alloys having properties which compare favorably with those of copper-beryllium alloys...An unusual and highly desirable characteristic of these alloys is their insensitiveness to rate of cooling from the solution temperature. Air cooled and water quenched samples will have identical time hardness curves on being aged. Instead of requiring closely controlled conditions characteristic of many age hardening alloys, these alloys cannot be subjected to a thermal mechanical handling which will prevent hardening on their being subsequently heated to the aging temperature. …

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Flotation Of The Oxidized Ores Of Zinc, Fred Henry Bunge Jan 1946

Flotation Of The Oxidized Ores Of Zinc, Fred Henry Bunge

Masters Theses

"There is no satisfactory method of concentrating the finely disseminated oxide ores of zinc. Gravity methods of concentrating such ores may be used for coarsely crystalline materials in which the zinc material is free at approximately 10- to 35-mesh or coarser. In addition, gravity methods of concentration do not give a satisfactory separation on those ores in which the gangue mineral is small. As a result there is need for a method of beneficiating various deposits of oxidized zinc ores. The two commercially important oxidized zinc minerals under consideration are smithsonite, the zinc carbonate and hemimorphite, frequently referred to as …

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Permability And Porosity Of Devonian Dolomites In Northwestern Montana, Jack W. Nordquist Jun 1945

Permability And Porosity Of Devonian Dolomites In Northwestern Montana, Jack W. Nordquist

Bachelors Theses and Reports, 1928 - 1970

The purpose of this investigation is to record data per­taining to porosity and permeability derived from physical tests performed on Devonian dolomites occurring in northwestern Montana, and to subsequently summarize the results obtained as an aid in determining the possibility of those dolomites being suitable reservoir rocks for oil and gas accumulation.

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Vermiculite, Occurence, Character, And Concentration Of Mineral From The Pony District, Madison County, Montana, A. Saterdal Jun 1945

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.

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The Examination And Treatment Of Industrial Magnesium Foundry Wastes, Oden Cass Garst Jan 1945

The Examination And Treatment Of Industrial Magnesium Foundry Wastes, Oden Cass Garst

Professional Degree Theses

"The principle forms of magnesium foundry wastes not recovered by industry are fine dusts, such as, sawdust, rotary filings and grindings, and the melting- and refining-pot drosses. The Bureau of Mines has studied waste generation and has developed processes for the treatment of dresses for the recovery of secondary ingot metal and has also developed processes for the mechanical beneficiation of fine dusts. The studies on fine dusts were continued until suitable melting methods for the recovery of ingot metal, approximately meeting the applicable specifications, were developed...Recommendations are made for improved melting methods for magnesium sawdust that increase greatly the …

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The Solubility Of Zinc Ethyl Xanthate In Water, Thomas M. Mckenzie Oct 1944

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.

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Hydrogen Overvoltage Of Cadmium Bismuth And Antimony Bismuth Alloys, Edwin W. Stevens Oct 1944

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.

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The Electrodeposition Of Copper-Cobalt Alloys, Richard L. Dunn Oct 1944

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.

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