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The Analysis Of Stresses And Design Of Multiple-Arch Dam, Guy Robert Scott

Bachelors Theses

"The so-termed: "Multiple", or "Scallop-Arched" dam, as its name implies, is one composed of a series of arches, either semi-circular or segmental in plan. These arches were first vertical but were later inclined downstream, when the engineers recognized the value of the weight of water in increasing the resisting moment. The thrust of these arches, due to the water pressure and the weight of the arch itself, is transmitted directly to the buttresses. There are numerous advantages to this type of dam over that of the gravity type"--Introduction, page 1.

Maine Forts, Henry E. Dunnack

Maine Collection

Maine Forts by Henry E. Dunnack, State Librarian.

Foreword by Percival P. Baxter, Govenor of Maine, State Capitol, Augusta - September 1, 1924.

Sections include: Introduction, Fort Machias, Fort Knox, Fort St.George's, Fort Edgecomb, Forts Popham and Baldwin, North and South Sugar Loaf Islands, Fort McClary, Indians and Their Wars, Fortifications in Maine , List of Old Forts.

Conductivity And Ionization Of Certain Salts In Absolute Alcohol, Armin Brene Jewell

Masters Theses

"One of the most striking observations one makes in connection with the study of the conductivities of alcoholic solutions is their great similiarity [sic] to those of aqueous solutions with the exception that the values of the concentrations are very much smaller. The differences are rather of degree than of kind. It will be noted that as the temperature is increased the molecular conductivity increases and the fraction of salt decreases which is what would be expected by analogy"--Discussion, page 43.

The Reduction Of Zinc Oxide By Carbon, George August Zeller

Masters Theses

"In spite of the fact that the reduction of zinc oxide by carbon is the fundamental reaction upon which the pyrometallurgy of zinc is based, there is a decided lack of accurate knowledge concerning the mechanism of the reaction, the temperature at which it begins, and the effect of various factors upon the rate at which it takes place"--Introduction, page 1.

The Solubilities Of Certain Inorganic Salts In Anhydrous Normal Alcohols, William Orval Keeling

Masters Theses

"An examination of the literature shows that extensive studies have been made of the solubilities of inorganic salts in aqueous, normal alcohols, but that little has been done in determining the solubilities in anhydrous alcohols. Northing was found of a systematic study of the solubilities of NaCl, KCl, NaN0₃ and KNO₃ in the lower alcohols over a fairly wide range of temperature. The author has made a study of the solubilities of the above mentioned salts in lower anhydrous normal alcohols at the temperatures 20°C, 25°C, 30°C and 40°C"--Introduction, page 1.

On Plain Carbon Steel, Walter Edward Remmers

Masters Theses

"In 1921, an investigation was carried on by Messrs. Howe, Foley and Winlock, under the auspices of the National Research Council, the results of which were published under the title of - "Influence of Temperature, Time and Rate of Cooling on Physical Properties of Carbon Steel," by the American Institute of Mining and Metallurgical Engineers, February, 1923. These results showed that all physical properties of a 0.34 C. percent steel are improved by increasing the rate of cooling from temperatures above the critical range up to a certain rapidity beyond which, there is a gain in strength at the expense …

Hydro-Electric Treatment Of Joplin-Miami Zinc Concentrate, David Francis Walsh

Masters Theses

"The Electrolytic Process is a process capable of almost unlimited mechanicalization. For obvious reasons it is more economic to treat high grade concentrates; yet, the extremely high grade concentrates are not essential. The Electrolytic Process can treat economically concentrates as low as 30.% zinc under certain conditions. It is significant that as the grade of concentrates offered for treatment is lowered, the treatment cost per ton of concentrates decreases for the Electrolytic Process; whereas, it will increase, as previously stated, for the Retort Process. It is seen then that the position of the Electrolytic Process is strengthened where lower grade …

Lactose Fermenting Bacteria In The Water Supplies Of The Rolla Quadrangle, Joe Beaty Butler

Masters Theses

"I. Preliminary investigations. This includes the securing of 139 water samples from water sources in the Rolla Quadrangle, and inoculating 1cc samples from these into Dunham's Lactose tubes and thereby getting lactose gas production checks on the field samples. II. Confirmatory tests. This consisted in the isolation of lactose fermenters on Eosin-Methylene Blue Agar and checking of the cultures back through the lactose and then through dulcitel and saccharose so as to complete Jackson's Classification. 106 cultures were classified in this manner. III. Running through a complete set of tests of pure cultures, so as to completely (as possible) identify …

Rammed Earth Walls For Buildings, U.S. Department Of Agriculture

Rammed Earth Collection (1923 - 1959)

Earth has been used for building dwellings from time immemorial. One method of use, superior to others, and which was known to the Romans has been preserved by tradition .t o modern times. This method consists of ramming slightly moist, specially selected earth, without the addition of straw or other material, between movable forms, and is known by itsFrench name, " pise de terre," which means "rammed earth." Pise de terre is a reliable building material when properly handled and is admirably adapted to structures on farms distant from transport routes. Little information has been published on rammed earth in …

The Drainage District Movement, Leo K. Homer

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

It has been recognized down thru the ages that the prosperity of a country could be measured by its agricultural development.

Design Of A 100 Ton Asbestos Concentrator, Walter Gammeter

Professional Degree Theses

"There are at present at least two methods in use for concentrating and classifying asbestos fibers, each of which is satisfactory when used to handle ores for which it was designed. The processes can be referred to, conveniently, as the pneumatic and gravimetric processes, deriving their names from the chief factors used in their schemes of operation"--Types of Asbestos Mills, page 3.

Some Accomplishments Through Simplification Of Concentrator Flow-Scheme, Ralph Augustus Conrads

Professional Degree Theses

"The writer came to The Cusi Mining Company in the last days of October 1921. The property and the district are just such as previously described, this company having been a high-grade producer for some years and the mill was built to handle the lower grade of mine ores and an accumulated mine dump"--page 6.

A Study Of The Subsurface Conditions In The North Central Texas Oil Fields, Robert Stanley Burg

Professional Degree Theses

"A study was made of the subsurface conditions in Stephens, Eastland and northern Brown Counties, Texas, to determine the structure of the deep producing horizon. The purpose of the work was to locate structural conditions favorable for oil accumulation not apparent at the surface"--Page 2.

Boiler Feed Water Purification At The Gorge Power Plant, Akron, Ohio, Bernerd William Adams

Professional Degree Theses

"The conditions of operation at the Gorge Power Plant were such that raw water was used in all the boilers. The boilers were operated at an average of about one-hundred and seventy-five percent rating and considerable scale formed in the tubes of the boilers. It was evident that this caused a large loss in fuel and increased the expense of maintenance. It was necessary to employ a number of men to remove the scale. An investigation was made to determine as nearly as possible the loss caused by the use of impure water. After the investigation, an attempt was made …

Project For The Construction Of A Standard Gauge Railroad From Guanajay To The Port Of Mariel, P Del R, Royal Sylvester Webster

Professional Degree Theses

"The great industrial development of the Island of Cuba during the period of the World War and the succeeding years, causing the congestion of the existing transportation lines and shipping facilities, has necessitated the opening up of new routes and the providing of additional and better facilities. In the latter part of this period, the decline in the price of sugar, the principal product of the country, has made imperative its more economical production and marketing, which has tended to the opening up of new and cheaper routes to ports of export. In accord with the general activities along this …

The Construction, Equipment And Operation Of The Second Largest Oil Refinery In Mexico, Arturo C. Fernandez

Professional Degree Theses

"In the preparation of this thesis the writer has endeavored to describe in a clear, concise and simple manner the general scheme carried out by the Foundation Company in the construction, equipment and operation of the Corona Refinery at Chijol, Veracruz, Mexico.

Under construction, the most interesting features of the work executed by the Field Engineering department have been discussed at some length. Throughout this paper elementary details have been omitted, the casual reader being assumed to possess a knowledge of the fundamental principles of engineering.

No attempt has been made to cover the activities of the allied--mechanical, electrical, architectural--departments …

Organization And Development Of A Missouri Coal Mining Corporation, Riley Marsh Simrall

Professional Degree Theses

"Approximately 2350 acres of land in and around the town of Mosby, Clay County, Missouri, are held under Coal Mining Leases by the Mosby Coal Company, a Missouri Corporation. These leases were grouped to form a block under which mining operations might proceed in all directions from one principal working shaft. It is intended to set forth in the following report the factors which influenced the original incorporators of the Mosby Coal Company in leasing and prospecting this land for coal, and to describe, in a general way, the incorporation, financing, development and valuation of the property"--Introduction, page 4.

Design Of High Tension Outdoor Substation, Joseph Worley

Bachelors Theses

"The present day tendency appears to be toward the more frequent use of outdoor substations, where not only the section disconnecting switches, but also transformers, lightning arresters, and indeed all high tension equipment, are exposed to the weather. The control of local feeder circuits at the lower pressures would be by means of switch-panels in cheaply constructed houses erected near the transformers"--Introduction, page 3.

On The Breakage Of Rock Drill Steel, Muir Luken Frey

Masters Theses

"Prior to 1920 there was little attention paid to the general problem of breakage of rock drill steel. Each locality had its problem and the matter was treated as a purely local one, independent upon conditions in that particular section. But in the above-mentioned year, there arose an interest of wider scope, from what causes it is impossible to determine accurately, and the matter is now the subject of a broad investigation in which the users of rock drill steel, the United States Bureau of Mines, and the United States Bureau of Standards are cooperating...There is, to date, no satisfactory …

Effect Of Time And Temperature On Distillation Of Zinc-Lead-Silver Complex Sulphide Concentrates, Ernest Sterling Wheeler

Masters Theses

"Accurate information is lacking as to the effect of temperature and time of distillation on the relative proportions of zinc, lead and silver volatilized from complex ores, and while it is evident that the possibility of the commercial treatment of these complex ores has engaged the attention of metallurgists for years, it is one that will still bear investigation even on a small scale"--Statement of Problem, page 5.

Report On The Metates Mining Company, Harvey Louis Tedrow

Professional Degree Theses

"This report is to describe the property and operations of the Metates Mining Company and to propose plans for further development"--Object, page 1.

Missouri School Of Mines, Civil Engineering Department Survey Data. Including The Adjustment Of The Triangulation Net On The M.S.M. Campus, Joe Beaty Butler, Roy Oscar Erickson, Wayne Shannon Frame

Professional Degree Theses

"In taking up the adjustment of survey data on the M.S.M. Campus the first thing to determine [is] the use for said data. The data is used by the Department to determine whether or not the student in his Field Work has pursued correct methods. No attempt is made to require great precision as the student is just learning to use the instruments and time is not allowed in the courses for him to learn other than the rudiments of Surveying"--Part 2, Adjustment Data, Narration of Adjustment Methods, page 24.

Oil Possibilities In Western Kansas And North Central Wyoming, Joseph Stewart Irwin

Professional Degree Theses

"The reported discover of oil in the McNab well in the northwest corner of Trego County, Kansas, has attracted attention to that region as possible oil producing territory. The offer of certain blocks of leases on several so-called "oil structures" occasioned the reconnaissance made by the writer. The prospects were examined during the period, September 28 to October 14, 1921"--page 1.

Applications Of Method Of Least Squares To The Adjustment Of Level Circuits: Adjustment Of Elevations In Dawson And St. James Townships, Phelps County, Missouri, Clarence Edward Bardsley

Professional Degree Theses

"An introduction to a thesis on least squares could be drawn out to considerable length in explanation: as the purpose of this thesis has been an investigation in applications of the method of least squares to the adjustment of level circuits, it will be found in the body of the report considerable space has been devoted to the explanation of the different applications of the method, with a view that these investigations may be of use to engineers in the profession; so the introductory remarks will be brief ... The method of least squares takes first rank as an arithmetical …

Method Of Sampling Diamond-Drill Core, William Henry Mccartney

Professional Degree Theses

"The method of sampling and preparing samples of diamond-drill core, explained in this article, was used by the writer during a drilling campaign at Stirling, Cape Breton, Canada, in 1917"--page 4.

Metallurgical Processes Involving Surface Phenomena, Reginald Scott Dean

Professional Degree Theses

"Surface Tension of Liquid Metals. The surface tension of liquid metals is much greater than that of any other class of substances. Barkins lists the various substances in the following order as to surface tension; organic compounds, water, molten salts, metals"--Part I. General, page 1.

The Roasting And Magnetic Separation Of Wisconsin Ores And The Utilization Of The By-Products, Earl George Deutman

Professional Degree Theses

"In the Wisconsin field, the zinc blende is usually found associated with iron sulphide in the form of marcasite. This ore, after being milled and concentrated at the mines, is sent to separating plants for further treatment by roasting and magnetic separation, inasmuch as the mixed blende and marcasite concentrate, owing to the high iron content, is not suitable for the zinc smelter, and the magnetic separation scheme of separation must be resorted to"--page 1.

The Flood Control System Of Newport, Ark., Alvis Frederick Denison

Bachelors Theses

"Vast sums each year are expended on flood control projects on the Mississippi river and its tributaries. Millions of acres that were formerly subject to annual inundation caused by overflows, have been reclaimed for agricultural purposes, and each year, an increasing amount of this sort of work must be done as quicker run off and an increased volume caused by the clearing of land and drainage of natural storage, results in higher flood stages. Of course the greatest work of this kind has been done along the Mississippi river, where great levees on each side from Missouri to its mouth …

A Metallographic Study Of Copper Mattes, Edward James Torrence

Bachelors Theses

"The metallographic knowledge of copper mattes or mattes in general for that matter, although extensive, is, to put it mildly, rather diversified. One authority, for instance, believes that mattes are sulphide dissolving compounds there being no eutectiferous series involved. Another believes that the matte constituents enter into a eutectiferous series, compounds being present. Still a third contends that there are no compounds formed but that a simple eutectiferous range exists between certain limits outside of which the end members of the series form solid solutions with each other. In so far as there exists seeming absolute proof for all of …

Design And Construction Of The Experimental Mine, Robert Knox Stroup

Masters Theses

"The mining laboratory and experimental mine at the Missouri School of Mines was opened in 1913. At a suitable location, on the site of an old dolomite quarry, one and one half miles southwest of town a tunnel was started into the hillside and the necessary plant erected. This plant consisted of a fifty horse-power Erie Iron Works boiler of the modified locomotive type, and an Ingersoll Rand type 10 single stage duplex air compressor of a capacity of one hundred cubic feet of free air per minute. This plant was in operation during the fall months of each year …