Engineering Commons^™

The Outdoor Substation, Israel Herrick Lovett

Professional Degree Theses

"The Outdoor Substation, as an essential part of a high voltage distribution system, has been largely developed during the past 12 years. The New England Power Company was one of the pioneers in this development, their substation at Millbury, Massachusetts, being one of the first outdoor substations in the northern part of the country. During the five years' experience with this company, the writer of this thesis, in his position of Chief Electrical Designer, was partly responsible for the design of all substations constructed by the company during this period, from 1916 to 1921...This thesis is an account of the …

Engineering Practice In The Tri-State District, Richard John Stroup

Professional Degree Theses

"Mining operations of the zinc and lead deposits of Southwest Missouri, Southeast Kansas and Northeast Oklahoma forming what is known as the Tri-State District are peculiar in many ways. The 'old country' with its shallow gougings and more or less crude methods has practically passed; methods have been improved with the increased size of operations, and the Engineering Department has grown into an indispensable link in the mining operations of practically all the operating companies. But traditions often die hard. Many phases of mining operations are peculiar to this District alone, and likewise engineering practice has its peculiarities"--page 1.

Accident Prevention In Cement Plants, Edward Rees Abbott

Bachelors Theses

"The cement industry as a whole took up accident prevention work along with the pioneers. With the organization of the Portland Cement Association, a Bureau of Accident Prevention was formed. This Accident Prevention Bureau, by sending out literature, holding competitions, collecting and tabulating results of accidents collected from every cement manufacturer and affiliating with National Safety Council as the Cement Section, has made rapid strides each year, until today it is doubtful if any other branch of manufacturers can show more improvement in accident records than the cement industry. In spite of their marked improvements each year, there were 47 …

A Discussion Of Electric Welding, Peter Fergus Thompson

Bachelors Theses

"This thesis deals with the different processes, methods and uses of Electric Arc Welding; and tests made in the laboratory with Direct and Alternating Current"--page iii.

Transmission Of Electrical Energy At 220,000 Volts, Robert Wilhelm Ahlquist

Bachelors Theses

"A. E. Silver at the Annual Convention of the A.I.E.E. in 1919 gives some of the reasons why 220,000 Volt transmission is a logical and feasible commercial proposition. He also gives some of the main features of the undertaking...Owing to the great scope of this paper it has been thought necessary to generalize on the discussion of the first two topics and to treat the next two in more detail"--Statement of Scope of this Paper, pages 3-4.

Economic Geology Of Northern Angola, Artileus Vosteen Eulich

Professional Degree Theses

"Most of the mineral deposits have been known to exist for over a generation but efforts to mine them usually met with failure. The most signal discovery, that of diamonds, was made only in recent years. They are the only substance coming under the category of mineral which are being exploited on a large scale. Energetic efforts are being made to find petroleum in commercial quantities. There are still vast areas practically unexplored which if thoroughly prospected might lead to more discoveries. It is difficulty, however, for one who has prospected for two years in Angola without any particular success …

The Gas Fields Of North Webster Parish, Louisiana, Joseph Maple Wilson

Professional Degree Theses

"The gas fields of north Webster Parish, Louisiana, as discussed in this paper, are embraced in an area 9 townships or 324 square miles in extent including Township 21 North, Ranges 9, 10, and 11 West; Township 22 North, Ranges 9, 10, and 11 West; and Township 23 North, Ranges 9, 10, and 11 West in north Webster Parish and extreme northeast Bossier Parish, Louisiana. The area is outlined in red on the accompanying map, on Page 2, which shows the relation of the three gas fields in the area to the other oil and gas fields of north Louisiana, …

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.

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 …

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.

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.

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 …

The Movement Of Ground Water And Its Relation To The Drainage Of Irrigated Lands, Ernest O. Larson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

One needs but to review the history of the irrigated projects of the West to see clearly the importance of drainage. Since the passing of the Reclamation Act in 1902, the construction of drainage work by the United States Reclamation Service on seventeen projects located in thirteen western states represents about 12 percent of the expenditures from the Reclamation Fund. The portion for drainage has been spent during the last few years. This work has required an annual expenditure of about $1,000,000 or a total of $8,000,000 to July, 1922⁽¹⁾. The work completed is estimated to have reclaimed …

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 …