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Articles 196681 - 196710 of 197796

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The Suitability Of An Electric Glo-Bar Furnace For The Hot Load Test On Refractories, Paul Curtis Branstetter Jan 1936

The Suitability Of An Electric Glo-Bar Furnace For The Hot Load Test On Refractories, Paul Curtis Branstetter

Bachelors Theses

"This investigation was carried out to determine, if possible, the suitability of the Glo-Bar furnace for the hot load test by comparing results obtained with the standard furnace with those obtained on the Glo-Bar furnace on different brands of refractories"--Scope of Investigation, page 2.

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A Treatise On The Use Of Insulating Refractory Brick In Malleable Annealing Ovens, James Joseph Offutt Jan 1936

A Treatise On The Use Of Insulating Refractory Brick In Malleable Annealing Ovens, James Joseph Offutt

Professional Degree Theses

"At frequent intervals, there is developed in the refractory field some product which serves to keep this branch of industry in line in the fast moving modern era. The advent of such materials as high temperature mortars and high alumina, super refractories provided a definite mark of progress. One of the most recent and far reaching developments was made possible by the perfection of light weight, insulating fire brick. This product filled a gap which had long been an aching void to all who had made a careful study of furnaces in an effort to obtain higher efficiency. Formerly, it …

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Small Scale Mining Possibilities In Southeast Missouri, William Walbridge Weigel Jan 1936

Small Scale Mining Possibilities In Southeast Missouri, William Walbridge Weigel

Professional Degree Theses

"The disseminated lead ore bodies of St. Francois County in southeast Missouri are known for their enormous size and even grade over large areas. Several of these ore bodies are over a mile long by a quarter mile wide. They have been worked on a commensurate scale. The smallest mill in the district, at Bonne Terre, now treats 2,500 tons daily capacity. Each of these mills is supplied by a single ore hoisting shaft. The disseminated ore district of St. Francois County is bounded by the Big River-Bonne Terre fault on the north and west, by the Simms Mountain fault …

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Drilling For Placer Deposits Of Gold And Platinum In The Jungles Of Colombia, Theodore Owen Seiberling Jan 1936

Drilling For Placer Deposits Of Gold And Platinum In The Jungles Of Colombia, Theodore Owen Seiberling

Professional Degree Theses

"In the following report I have made no attempt to "white-wash" or to exaggerate conditions as I found them in the Choco. In plain language I have endeavored to give the reader a picture of the obstacles met, and overcome by the engineer in his search for placer deposits of gold and platinum with the prospect drill in the jungle"--Foreword, page 1.

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The Problems Of The Silver Dyke Mine, Dale Irwin Hayes Jan 1936

The Problems Of The Silver Dyke Mine, Dale Irwin Hayes

Professional Degree Theses

"In a newly conceived mining enterprise serious operating problems may remain concealed until encountered in the actual early operating period of the property. The major problems of the Silver Dyke Mine were of this nature. This mine is the property of the Silver Dyke Mining company, a subsidiary of the American Zinc, Lead and Smelting Company. It is situated about five miles from Neihart, Montana. A three-and-one-half-mile trucking road connects the mine with a railway siding. The property is in the Little Belt Mountains, at an elevation of about seven thousand feet. The climate is severe, the winters long, and …

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Construction And Testing Of A Laboratory Fluid Flow Apparatus., Richard W. Dehoney Jan 1936

Construction And Testing Of A Laboratory Fluid Flow Apparatus., Richard W. Dehoney

Electronic Theses and Dissertations

No abstract provided.

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Austenite Grain-Size In Low-Carbon Steels And The Coercive Force Of Case Carburized Steels, Thomas Robert Graham Jan 1936

Austenite Grain-Size In Low-Carbon Steels And The Coercive Force Of Case Carburized Steels, Thomas Robert Graham

Masters Theses

"The objective of this investigation was to investigate the various methods for determining austenite grain-size and make a comparison of the results obtained by these methods"--Introduction, page 2.

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Air Corp Engineering School, Wright Field - 1935 Catalog, Air Corps Engineering School, A. W. Robins Jul 1935

Air Corp Engineering School, Wright Field - 1935 Catalog, Air Corps Engineering School, A. W. Robins

AFIT Documents

This publication is issued to fill the need on the part of the Air Corps in general for a more detailed description of the curriculum of the Air Corps Engineering School. This description will serve as a guide to the accepted applicant in his preliminary preparation and a standard by which the individual Air Corps officer can arrive at an intelligent decision as to whether his own enthusiasm and preparation will be sufficient to warrant making application for the course. Entrance requirements are definitely stated herein. For those who do not contemplate intensive aeronautical engineering training, this publication may be …

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A Metallurgical Study Of Gold Ores, Alfred A. Bloom May 1935

A Metallurgical Study Of Gold Ores, Alfred A. Bloom

Bachelors Theses and Reports, 1928 - 1970

Gold is widely distributed in the earth's crust in small quantities. Gold is found in nature in two forms; the element itself and the compound gold telluride. In all cases, silver in some proportion is an alloying constituent.

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Attempted Proofs Of The Differentiation Of Magmas By Syntexis, Clifford Wendel May 1935

Attempted Proofs Of The Differentiation Of Magmas By Syntexis, Clifford Wendel

Bachelors Theses and Reports, 1928 - 1970

This investigation was an effort to obtain proof of the much disputed principle that most of the observed mag­netic differentiations have been due to the assimilation, or syntexis, of the intruded country rocks.

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Electrolytic Recovery Of Copper And Zinc From Brasses, Thomas Barker Jr. May 1935

Electrolytic Recovery Of Copper And Zinc From Brasses, Thomas Barker Jr.

Bachelors Theses and Reports, 1928 - 1970

Reclaimed metals, or secondary metals, are becoming of great im­portance in the metal industries of the world. Secondary metals are an important factor in production. The increase in the secondary production of copper is due to many factors. One of these may be its permenance, that is, the metal does not corrode very readily. Another reason for increase in production is the high price paid for it.

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The General Geology Of The Cardwell Mining District, Clyde Congdon May 1935

The General Geology Of The Cardwell Mining District, Clyde Congdon

Bachelors Theses and Reports, 1928 - 1970

The Cardwell Mining District is part of the greater Whitehall Mining District. The district is situated about four miles to the east and northeast of Whitehall in the southern end of the Bull Mountains which are near the Continental Divide. The first reported production was in 1896 after the dis­covery of the Mayflower Mine. Mining has been carried on in­termittently and on a small scale since that time.

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The Electrodeposition Of Manganese From Certain Aqueous Solutions, Fred J. Hill May 1935

The Electrodeposition Of Manganese From Certain Aqueous Solutions, Fred J. Hill

Bachelors Theses and Reports, 1928 - 1970

Careful examination of the literature available shows that the electrodeposition of manganese from various aqueous solutions has not been attempted to any great extent. The best method for the electrodeposition of pure manganese consists in the electrolysis of a solution con­taining manganous and ammonium sulphates.

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The Staining Effect Of The Hydrochloric Acid-Chromate Trioxide Solution On The Minerals Of The Chalcocite-Stibnite-Galena Ternary System., John W. Johns Jr. May 1935

The Staining Effect Of The Hydrochloric Acid-Chromate Trioxide Solution On The Minerals Of The Chalcocite-Stibnite-Galena Ternary System., John W. Johns Jr.

Bachelors Theses and Reports, 1928 - 1970

The object of this work has been to devise a method by which the different phases in the chalcocite-stibnite-galena ternary system may be identified. As the mineralogists have no precise methods for the identification of these phases, a hydrochloric acid-chromate trioxide staining solution was employed.

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The Separation Of Tungstic Oxide From Scheelite And Its Subsequent Reduction With Hydrogen, Dave Jones May 1935

The Separation Of Tungstic Oxide From Scheelite And Its Subsequent Reduction With Hydrogen, Dave Jones

Bachelors Theses and Reports, 1928 - 1970

The largest known deposits of tungsten ores occur in the continuation of the Indo-Malayan Mountains, which extends through Burma, Malaya, China, Japan, and Chosen. Production of tungsten concentrates was started in 1910 in Burma, and in 1911 this country was the world's largest producer. China produced but little until 1916, but has since supplied over fifty per cent of the world's requirements.

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Microscopic Study Of Montana Silver Ores., Edwin Johnson May 1935

Microscopic Study Of Montana Silver Ores., Edwin Johnson

Bachelors Theses and Reports, 1928 - 1970

A microscopic investigation of the Montana silver minerals was conducted. This study consisted mainly of identifying the silver and silver-bearing minerals and of determining their paragenetic rela­tionships. The increasing amount of research in which the reflecting microscope is employed is evidence of the great value of this method of approach in the solution of problems of paragenesis of the opaque minerals.

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The Geology Of Lost Creek Canyon With Special Reference To Igneous Activity, John Kolesar May 1935

The Geology Of Lost Creek Canyon With Special Reference To Igneous Activity, John Kolesar

Bachelors Theses and Reports, 1928 - 1970

This investigation was undertaken primarily as a problem in geologic mapping, coupled with a study of stratigraphy, glaciation, igneous phenomena, and structure. The area is admirably suited to a study of geology and geologic events. Because it is small in extent, the area was studied in some detail during the time which was devoted to field work. The record of igneous activity of past geological ages is re­markably well exposed, since Lost Creek Canyon was carved through the roof of a stock or batholith by the glaciers of the Pleistocene epoch.

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Occurrence And Origin Of Placer Gold In Montana, John K. Halse May 1935

Occurrence And Origin Of Placer Gold In Montana, John K. Halse

Bachelors Theses and Reports, 1928 - 1970

From time immemorial man has used gold as a medium of exchange, a mea­sure of value, as jewelry and for ornamentation. Placer gold has led dir­ectly or indirectly to the settlement of lands, California and Alaska being the two best known examples. It has led the way to the discovery of other important mineral wealth, the discovery of the copper and silver deposits at Butte, Montana and the discovery of the silver deposits at Cripple Creek, Colorado being two good examples.

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A Preliminary Study Of The Ostracoda Of The Big Snowy Group, Mississippian, Of Montana., John C. Rabbitt May 1935

A Preliminary Study Of The Ostracoda Of The Big Snowy Group, Mississippian, Of Montana., John C. Rabbitt

Bachelors Theses and Reports, 1928 - 1970

In the field, samples were taken vertically and horizon­tally along the various outcrops in different sections of central and south-central Montana. At important localities the samples were taken about every half-foot verti­cally; in other sections they were taken every few feet.

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An Investigation Of The Properties Of Some Of The White Metal Alloys, William James Walsh Jr. May 1935

An Investigation Of The Properties Of Some Of The White Metal Alloys, William James Walsh Jr.

Bachelors Theses and Reports, 1928 - 1970

Although there is no standardized list of alloys, most investigators have, to avoid confusion, concurred in at least grouping the metals under several general heads. Precious metals: gold, silver and the platinum group; the light metals: aluminum and magnesium; the non-ferrous metals (excluding all steels and iron-base alloys); and the antifriction metals.

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Siliceous Sponge Spicules Of The Quadrant Formation From Montana., Lester Zeihen May 1935

Siliceous Sponge Spicules Of The Quadrant Formation From Montana., Lester Zeihen

Bachelors Theses and Reports, 1928 - 1970

A sponge spicule is a siliceous or calcareous individual or group of rays which form a framework for the sponge. Sponge spicules are very delicate and easily broken. The methods used in obtaining micro-fossils vary considerably with the type of material from which they are to be recovered and the frailness of the fossil obtained.

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New Victory Mining Company Avon, Powell County, Montana, E. Renouard Jr., E. P. Shea Mar 1935

New Victory Mining Company Avon, Powell County, Montana, E. Renouard Jr., E. P. Shea

Bachelors Theses and Reports, 1928 - 1970

Mr. L.D. McClean and Mr. A. Schemel, officers of the New Victory Mining Company, requested an examination of the company's properties near Avon, Montana. Following this request Mr. E. Renouard Jr., and Mr. E.P. Shea visited the properties on March 2nd and 3rd, 1935, and submit herewith the following report.

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Handwritten Receipt For Cash, 2-12-35, V. L. Stallworth Feb 1935

Handwritten Receipt For Cash, 2-12-35, V. L. Stallworth

Real Estate Correspondence 1925-1937

Document: Handwritten receipt for cash received: Received 100.00 [a/c] rents R.H. Walker. VL Stallworth.

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Insurance Invoice, January 17, 1935, Burbridge & Higbee Jan 1935

Insurance Invoice, January 17, 1935, Burbridge & Higbee

Real Estate Correspondence 1925-1937

Document: Bill and payment documentation sent to Mrs. R.H. Walker from Burbridge & Higbee Dr. listing payments due.

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Ceramic Materials And Products That Have Present Or Future Significance In Montana, W. Wurth Kriegel, John D. Keyes Jan 1935

Ceramic Materials And Products That Have Present Or Future Significance In Montana, W. Wurth Kriegel, John D. Keyes

Bachelors Theses and Reports, 1928 - 1970

The collection of stories compiled in this pamphlet were originally written for radio broadcast over Montana radio stations. It must be understood that these stories do not cover the whole field of ceramics nor do they in any sense give a complete historical or technical summary of any one field or subject discussed. In each case, those subjects have been treated that apparently have present or future significance in Montana.

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The Effect Of Electrical Lubrication On The Transmission Of Pressure In Dry Pressed Bodies, Oliver William Kamper Jan 1935

The Effect Of Electrical Lubrication On The Transmission Of Pressure In Dry Pressed Bodies, Oliver William Kamper

Bachelors Theses

"One of the great problems facing the Ceramic industry today is the production of perfect brick by the dry press process. This problem has been of vital importance because of the physical defects obtained in the dry pressing operation due to the ununiform transmission of pressure in the ware produced. As a result of this ununiform transmission of pressure, strains, cracks, differential shrinkage, low strength, and laminations have been accentuated after the firing of the body. Pressure transmission is influenced by several factors: the size and shape of grog and clay grain, the time and duration of pressure application, the …

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The Use Of Missouri Halloysite As A Suspending Medium For Enamels, Collins H. Mcdonald Jan 1935

The Use Of Missouri Halloysite As A Suspending Medium For Enamels, Collins H. Mcdonald

Bachelors Theses

"The object of this study was to find if Missouri halloysite could be used satisfactorily to float enamel frits, preventing them from settling during the spraying or dipping operation, so as to get a uniform coating of proper thickness over the surface of the ware. Halloysite is a clay-like natural aluminum silicate resembling kaolinite, but containing a larger but uncertain amount of water. The material that was used in this investigation was found in Lawrence County, Missouri"--Object of Investigation, page 1.

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A Preliminary Study Of The Micro-Fauna Of Certain Paleozoic Formations Of Montana, George Powe Jan 1935

A Preliminary Study Of The Micro-Fauna Of Certain Paleozoic Formations Of Montana, George Powe

Bachelors Theses and Reports, 1928 - 1970

The study of the micro-fauna of Montana formations has been almost entirely neglected. Because the petroleum industry of this state has not felt the necessity for using micro-paleontology in its sub-surface correlations, the science has been but little used. The Montana Power Company has had an examination made of some of its well cuttings by a competent micro-paleontologist who found some foraminifera in Mesozoic sediments. However, no investiga­tions have been made to determine the presence and character of the micro-fauna of the Paleozoic formations of Montana.

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The Effects Of Zinc Sulphate, Manganese Sulphate, And Iron Sulphate On The Lead Storage Cell., George A. Mccracken Jan 1935

The Effects Of Zinc Sulphate, Manganese Sulphate, And Iron Sulphate On The Lead Storage Cell., George A. Mccracken

Bachelors Theses and Reports, 1928 - 1970

The lead storage battery as it is used today is made up of the pasted type plates of lead dioxide, the anode, and sponge lead, the cathode, and wooden or hard rubber separators, which serve to insulate these from one another. In manufacturing these, it is desirable to keep them free from impurities.

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Construction And Application Of A Vacuum Tube Potentiometer., R. Palmer Benedict Jan 1935

Construction And Application Of A Vacuum Tube Potentiometer., R. Palmer Benedict

Electronic Theses and Dissertations

No abstract provided.

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