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Some Emission Phenomena Observed On Commercial Photocells, Zaboj V. Harvalik

Journal of the Minnesota Academy of Science

No abstract provided.

Aircraft Electronic Instrumentation, A. P. Upton

Journal of the Minnesota Academy of Science

No abstract provided.

Geological Reconnaissance Of The Coldwater River, Mississippi, Pinckney Ronald Mabrey

Professional Degree Theses

"This report was the result of an assigment [sic] to make a geologic reconnaissance of the headwaters of Coldwater River in northwest Mississippi, on which a site for a flood control dam had been made. At the time of the last field work in November, 1940, the boring program for borrow areas and for foundation had been completed.

The Sardis dam on the Little Tallahatchie River, some 35 miles southeast of site for the Arkabutla dam had been recently completed, it being the first of several designed for flood control purposes in the Yazoo basin, Mississippi. This was a hydraulic …

Copper Commando - Butte Labor-Management Issue, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...W. Ellison Chalmers, War Production Drive, pioneering teamwork, Labor-Management Committee, Crafts Unions, American Federation of Labor, absenteeism, Philip Murray, William Green, Sub-committees

Copper Commando - Vol. 1, No. 23, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...Donald M. Nelson, War Production Board, production line heros, East Helena, slag treating plant, Anaconda phosphate plant, food shortage, Miners' Union Day, meat, copper, platter chatter, food, points, Lillian Merritt, machine shop, Butte

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.

The Electrodeposition Of Iron-Manganese Alloys, Earl C. Roberts

Bachelors Theses and Reports, 1928 - 1970

Various electrolytes were experimented with in an attempt to deposit an iron-manganese alloy. An Alloy was obtained from a solution containing ferrous ammonium sulfate, manganous sulfate, and ammonium sulfate. Further experimentation was done in an effort to determine the optimum conditions of deposition and the highest manganese alloy which could be produced.

Copper Commando - Vol. 1, No. 4, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...Anaconda, war bonds, Robert L. Denig, devil-dogs, mining, safety, Pennsylvania Mine, Japanese, Americans, dying, smelter, Great Falls, copper, production, interviewing, Commandos, Rangers, fires, camera club

Copper Commando - Vol. 1, No. 1, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue…War Department, Butte, Bob Nesmith, copper, Mountain Con, Anaconda, smelter, copper-pouring, Great Falls, refinery, war needs, Uncle Sam, Leonard headframe completion, food, worker’s wives, Jack Gaffney, carpenter

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.

The Application Of A Laboratory Induction Furnace To The Selective Smelting Of A Montana Chromite Concentrate, James H. Mcmahon

Bachelors Theses and Reports, 1928 - 1970

The purpose of this experimental work was to determine with the utilization of a laboratory sized induction furnace a method whereby a high-iron Montana chromite concentrate could be successfully smelted to yield a product suitable for the subsequent production of standard ferrochrome.

Induction Furnace Smelting Of Montana Chromite, Millard L. Reyner

Bachelors Theses and Reports, 1928 - 1970

In 1939 the total world production of crude chromite was approximately 1,167,000 metric tons; of which the United States produced only 3,672 metric tons and imported over 317,500 metric tons. Imports came mostly from the Philippine Islands, Cuba, South Africa, and Rhodesia.

Some Leaching Characteristics Of The Butte Rhodochrosite, W. L. Slosson

Bachelors Theses and Reports, 1928 - 1970

With the increasing importance of manganese in the metallurgical fields of today and tomorrow, ex­tensive work along the lines of its successful ex­ploitation has been accomplished by many investiga­tors. Since tie current world situation has shut off most of our supply of high-grade manganese ores from foreign sources, the low-grade domestic deposits have entered the fields of investigation very rapidly.

Electrical Resistivity Measurements Of Powder Metal Compacts, John M. Fitzpatrick

Bachelors Theses and Reports, 1928 - 1970

This work, as it was originally planned, was the arranging of an apparatus whereby electrical resistivity measurements could be made on powder compacts. It was also to include measurements on a series of copper-nickel compacts both before and after sintering.

Sizing By Elutriation Of Finely Ground Quartz And Pyrite, Elmer C. Polson

Bachelors Theses and Reports, 1928 - 1970

Elutriation, as a means of sorting mineral particles, has received marked attention during the last fifteen years. Its use in the ceramics industry for the sorting of clays was recognized even before this.

Newark Engineering Notes, Volume 5, No. 2, March, 1942, Newark College Of Engineering

Newark Engineering Notes

A journal by the administration, faculty and alumni of the Newark College of Engineering. This issue includes: "The President's Diary" by Allan R. Cullimore "Inductively-Filtered Rectifier Circuits" by Frederick A. Russell "Vibration Isolation" by Harry F. Ritterbusch "The Beam Integrals" by Odd Albert "The Combustion of Carbon" by Joseph Joffe "The Engineer and Psychology" by Lillian M. Gilbreth "Aircraft Production and Its Problems" by Jarvis C. Buxton "War Emergency Program" "Scholarship To Olsen" "Reflections" by Harold N. Cummings "Electricity and Magnetism" by Norman E. Gilbert "Professor Cambreleng Drafted" by Robert W. Van Houten "Reading for Engineers"

Recovery Of Manganese From Oxidized Ores As Iron-And Phosphorus-Free Soluble Salts, Emil Pietz

Masters Theses

"There is a great demand at present for this country to develop its manganese resources. The hazards encountered because of the present international crisis make it almost impossible to import high-grade ores. Manganese is one of the most important strategic metals because it is vital to the production of steel. After the stock piles are depleted and the imports decreased, the deficit must be supplied by the domestic deposits. A great deal of research has been done to concentrate the domestic low-grade ores but new problems have always been encountered. The differences in the properties of the low-grade ores from …

Applicability Of Hydraulic Drives To Oil-Well Pumping, James Francis Mcdonald

Professional Degree Theses

"To date, to the author's knowledge, there has been no successful application of the hydraulic drive to oil-well pumping. It is understood, however, that there is, at the present time, an installation in the Oklahoma City oil field, near Oklahoma City, Oklahoma, wherein a manufacturer of hydraulic couplings and an oil-producing company have cooperated in experimental work with the fluid drive applied to a pumping well. No technical data or information regarding the success of the application have, as yet, been released and, consequently, this work is presented primarily for the purpose of creating interest in the application of "Fluid …

Oxidation Of Phenanthrene., Frank Hunt Miller

Electronic Theses and Dissertations

No abstract provided.

Newark Engineering Notes, Volume 5, No. 1, December, 1941, Newark College Of Engineering

Newark Engineering Notes

A journal by the administration, faculty and alumni of the Newark College of Engineering. This issue includes: "The President's Diary" by Allan R. Cullimore "The Theory of Relativity and Its Application to Electromagnetism" by James H. Fithian "Easy Way to Blackout Windows in Home Is Outlined" by Engineering School Head "Tau Beta Pi" "James A. Darling Writes From the Canal Zone" "Professor Harold N. Cummings Appointed Vice-President" "Promotions and Appointments" "N. T. S. in the World War" by Professor James C. Peet "Professor Robert W. Van Houten Appointed Assistant Dean" "Supersonic Vibrations" by John E. Freehafer "Civilian Pilot Training and …

Newark Engineering Notes, Volume 4, No. 3, June, 1941, Newark College Of Engineering

Newark Engineering Notes

A journal by the administration, faculty and alumni of the Newark College of Engineering. This issue includes: "The President's Diary" by Allan R. Cullimore "An Electronic Frequency-Meter" by Rudolph Dehn "Cullimore Says Defense Needs Many More Graduate Engineers" "Engineering Defense Training in New Jersey" "Editorials on Engineering Defense Training Administered" by Newark College of Engineering "National Defense and the Engineering College" by James A. Bradley "From Defense Training to Engineering Training—A Logical Step" by Robert W. Van Houten "The Society of the Trunnion" "Control Surveys for Engineering Construction" by William S. La Londe, Jr. "Fundamentals of Operational Calculus" by Elmer …

Some Effects Of The Addition Of Tellurium To Lead Alloys, Selim Ozsahin

Bachelors Theses and Reports, 1928 - 1970

From the standpoint of its practical useful­ness, the most important characteristics of metallic lead are its cheapness, resistance to corrosion, plas­ticity, high specific gravity, low melting point, and its ability to form alloys in which some properties are modified by the addition of other elements, while other properties remain the same.

The Investigation Of Different Variables In The Assaying Of Silver Cyanide Solutions, Phillip L. Banfield

Bachelors Theses and Reports, 1928 - 1970

The cyanide method of extraction of gold and silver from their ores is extensively used in the United States and elsewhere. It is becoming increasingly more important in its use as the mining of lower grade deposits continues.

Measurements Of The Magnetic Permeabilities Of The Iron-Manganese Alloy System Prepared By The Methods Of Powder Metallurgy, O. Cihad Onbulak

Bachelors Theses and Reports, 1928 - 1970

Powder metallurgy is a branch of metallurgy which produces metallic compacts in their final forms by means of pressure and heat-treatment from the pow­ders. The products of powder metallurgy are being used in our daily lives quite often. For example, the tungsten wires in the electric bulbs to the silver-tin fillings of our teeth.

The Extraction Of Chromate Salts From Montana Chromite, Server Tasdemiroglu

Bachelors Theses and Reports, 1928 - 1970

In this thesis I have tried to determine the suit­able temperature, time and the amount of soda ash and lime needed for the calcining process. The leaching and purification tests were studied experimentally. The earlier process for making chromate from chromite was not the same as is used today. There­fore I have found it useful to put into this thesis the newest method for making chromate salts and their important uses.

An Experimental Investigation Of The Age Hardening Of Copper With Manganese Silicide, Ali Kozak

Bachelors Theses and Reports, 1928 - 1970

The subject of the thesis was based upon the theory of precipitation or age hardening of the copper by the compound formed by the Manganese and silicon present in the ternary Cu-Mn-Si alloy. The effect of the heat treat­ment to such an alloy was to be studied and the best aging time and temperature was to be determined.

The Testing And Concentration Of Lake Chelan Copper Ore, Thor W. Johnson

Bachelors Theses and Reports, 1928 - 1970

The geologic history of the Holden area and Lake Chelan district is an integral part of the history of the Cascade Mountain Range. The structure is very complex and the rocks, which have been subjected to intense metamorphic action, are portions of a roof pendant and consists of gneisses, schists and quartzites that are often difficult to correlate.

Pegmatites In Southwestern Montana, Ora Rostad

Bachelors Theses and Reports, 1928 - 1970

Little has been written on pegmatites in Montana except in conjunction with reports on mining districts. This subject was chosen as a senior thesis to see what facts could be ascertained re­garding pegmatites alone, and an attempt has been made by the writer to assemble all written material on pegmatites in southwestern Montana, and to study specimens from those that could be reached or from which specimens were available.

A Study Of The Concentration Of A Low-Grade Manganese Ore From The Ennis District, John B. Schuettenhelm

Bachelors Theses and Reports, 1928 - 1970

The purpose of the investigation was to determine the most effective means of concentrating the manganese in the ore. The study was that of identification of the minerals present. This showed the presence of oxides of manganese and iron, and carbonates of calcium and manganese. Methods of investigation were planned to determined whether the ore could be concentrated effectively by gravity concentration methods. ­

Newark Engineering Notes, Volume 4, No. 2, March, 1941, Newark College Of Engineering

Newark Engineering Notes

A journal by the administration, faculty and alumni of the Newark College of Engineering. This issue includes: "The President's Diary" by Allan R. Cullimore "Move Over, Mr. Field Man" by Marvin B. Scher "Formulas for the Solution of Catenary Problems" by Joseph Joffe "Methods of Subsurface Explorations" by D. C. Frost "The Fundamental Principles of Electricity in Modern Terminology" by Paul C. Shedd "The Value of Libraries to Engineers" by Ira A. Tumbleson "The Second River Joint Sewer" by Edward S. Rankin "S. P. E. E. and N. C. E." "American Society of Civil Engineers" "Conference on Land Surveying" "Professor …