Engineering Commons^™

The Construction Of A Ferromagnetic Torsion Balance, Elliott Willner

Bachelors Theses and Reports, 1928 - 1970

The construction of the apparatus was performed entirely in the machine shops at the Montana School of Mines. The materials utilized in the construction were obtained through the courtesy of many sources: the A. C. M. Co., the Montana Power Co., and the Western Iron Works.

A Recommended Program Of Related Instruction For Electrical Apprentices, Andrew C. Luff

Masters Theses

Chapter I

Introduction

The Role of Apprenticeship

The institution of apprenticeship has been an important educational process since the beginning of history. Centuries ago trade skills were passed on from father to son, and from master to novice through an association whereby the craftsman taught the novice the skills of his trade. Down through history apprenticeship has flourished either in one form or another, and today it is an important part of the industrial system. Apprenticeship has developed in accord with industrial progress.

In order to avoid confusion, it may be well at the outset to designate the meaning of …

An Analysis Of Aviation Education In Senior High School Textbooks, Herbert E. Ellinger

Masters Theses

Chapter I

Introduction

Mankind has emerged from the Stone Age through the Ages of Iron, Steam, and Electricity to the present Air-Age. This latter age is characterized by man's utilization of air for travel, transportation, and communication.¹ It is common knowledge that the Air-Age has a number of social implications. More of our citizens are going abroad and more foreigners are visiting the United States than was possible, a few years ago, with slow moving surface transportation. Military planes now fly round-trips between continents without stopping. There are few places that are not within reach of air transportation. Hence, …

Unit Consumptive Use Of Water Studies In The Ashley And Ferron Valleys Of Utah For The 1950 Growing Season, James O. Henrie

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

For the past 2 years a project has been carried on by the Utah Agricultural Experiment Station and the United States Department of Agriculture, Soil Conservation Service, in cooperation with the Utah State Engineer, in the Ashley and Ferron valleys of Utah to determine the consumptive use of water in these areas. This report is the preliminary part of the third year of study. It includes a determination of unit consumptive use values for the major agricultural crops. These values will later be used by the Soil Conservation Service and Experiment Station in determining the valley consumptive use by the …

An Evaluation Of Necessary Elements For Desirable Industrial Arts Instruction In The Elementary Schools Of Utah, Lee W. Ralphs

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

An essential part of the elementary school curriculum is the creative activity program connected with it. Educators believe that the fullest development of the child can best be attained through a program which provides a series of well selected experiences and activities. At present education considers the whole child--his abilities, needs, and interests--as vital factors in the development of a good curriculum, instead of merely the concrete and formal subject matter. Recently there has been an expressed view, by administrators of elementary school systems and many authorities and industrial arts teachers, that there is a definite need for formulating an …

Canal Seepage Loss Investigations In The Lewiston Area, Utah, Robert V. Thurmond

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

With population, industry, and irrigation ever increasing in the arid west, there arises new and greater demands for water. Much of the water now urgently needed is lost as seepage from the many miles of canals in the western states.

Rohwer and Stout (18) have estimated that in the western states from one-third to one-half of the water diverted for irrigation is lost before it reaches the farmers' fields. Of these losses, seepage probably accounts for the greatest loss. It is reported by the Bureau of Reclamation (14) that, of the 14,600,000 acre feet of water diverted on 36 projects …

Possible Mineral Resources University Land Grant, Montana School Of Mines Lands, Eugene S. Perry

Bachelors Theses and Reports, 1928 - 1970

The following evaluation of the mineral resources of the University Land-Grant lands has been made from an office study of geologic maps and published reports, and from a rather thorough knowledge of the geology of the state by the writer after 23 years of experience in the state.

Possible Mineral Resources University Land Grant, Montana State University Lands, Eugene S. Perry

Bachelors Theses and Reports, 1928 - 1970

The following evaluation of the mineral resources of the University Land-Grant lands has been made from an office study of geologic maps and published reports, and from a rather thorough knowledge of the geology of the state by the writer after 23 years of experience in the state.

Possible Mineral Resources University Land Grant, Montana State College Lands, Eugene S. Perry

Bachelors Theses and Reports, 1928 - 1970

The following evaluation of the mineral resources of the University Land-Grant lands has been made from an office study of geologic maps and published reports, and from a rather thorough knowledge of the geology of the state by the writer after 23 years of experience in the state.

Possible Mineral Resources University Land Grant, Western Montana College Of Education, Eugene S. Perry

Bachelors Theses and Reports, 1928 - 1970

The following evaluation of the mineral resources of the University Land-Grant lands has been made from an office study of geologic maps and published reports, and from a rather thorough knowledge of the geology of the state by the writer after 23 years of experience in the state.

Cellulose Pellets, John J. O'Neill Jr.

Professional Degree Theses

"This thesis describes the development of a new process for the manufacture of spherical particles of cellulose, regenerated from cellulose zanthate.

An electric equipment manufacturing company advised the author’s company that it had developed a device that required uniform spheres of regenerated cellulose having a diameter of about 75 to 100 mils. This company reported that it had developed a process for the manufacture of the cellulose particles but that the spheres produced by the process were not uniformly spherical. The equipment manufacturer considered that the functioning of the new device could be improved if the cellulose particles could be …

Studies Of Antimony Occurrence With Special Relation To Its Effective Extraction, San Jose Antimony Mines, Wadley, San Luis Potosi, Mexico, J. C. Archibald Jr.

Bachelors Theses and Reports, 1928 - 1970

The mines at San Jose which are within the Wadley unit are the largest antimony mines in Mexico. These mines produce more than half of the antimony produced by the company from its mining operations. Since the time of the author's connection with the company, a number of changes have been made in planning of development work, handling of labor, methods of mine development, cost improvement, and other problems inherent in the successful guidance of an operation.

Oil Field Corrosion, Edwin Harry Barsachs

Masters Theses

"The corrosion of metals in the petroleum industry has become an important engineering problem. The rapid increase during recent years in costs of steel has caused the industry to intensify its efforts to minimize corrosion losses in pipe lines and well casings. An industry-wide research program has resulted in the development of improved methods of controlling corrosion of such equipment.

The purpose of this paper is to assemble and correlate the information concerning the different causes, the detection, and the mitigation of corrosion of metals used in the oil fields of the world. The causes that are presented in this …

The Use Of Oil-Base Drilling Fluids, William Wesley Collins

Masters Theses

"Within the past few years the development of oil-base drilling fluids has become one of the more important contributions to drilling and production technology. The use or these new muds has increased as the benefits obtained have become more widely known and appreciated. Major problems in the petroleum industry have been, for many years, the contamination or drilling muds by salt water; control of mud when drilling through anhydrite, gypsum, or salt deposits; control of heaving or swelling shale; and water or mud blocking or the producing horizons. The development or oil-base drilling fluids is a direct contribution or engineers …

The Relationship Of Regional Structural Geology To The Ore Deposits In The Southeastern Missouri Mining District, Jack Alexander James

Doctoral Dissertations

"The lead deposits in the Southeastern Missouri mining district have been examined by numerous geologists and mining engineers since the original discovery about 1720. A list of the men who have reported on them includes some of the outstanding students of ore deposits.

The regional geology in the mining district either was unknown or only vaguely known when most of the early examinations were made, and the discussions of the structural geology are restricted in scope owing to the lack of detailed information. The reports based on these examinations, although excellent for their time, are incomplete in view of the …

Recovering Oil From An Unconsolidated Sand By Means Of Combustion, David K. Anderson

Masters Theses

"For many years, there has been talk expressing great concern about the oil reserves in the United States. Every four or five years, articles are published stating that we are running out of oil and our proved reserves, to date, are only adequate, at our present rate of consumption, for about 20 years. While this is true, it does not leave us with the complete picture. The industry in the past 20 years has never had more than a 20 year reserve. It must be said, however, that it is becoming more difficult with each passing year to find oil …

Stress Analysis Of Thin Bedded Mine Roofs Subjected To Evenly Distributed Lateral Load And Supported By Barrier Pillars, Sahap Sakip Aybat

Masters Theses

“Theoretical stress analysis in mine structures begins with the assumption that the structural elements are homogeneous, isotropic and perfectly elastic. It is this writers belief that stresses in a mine roof supported by barrier pillars may be compared to those stresses which may be found in a thin plate supported and restrained in the manner similar to such a mine roof. Therefore the stress and moment equations developed for plates are herein applied to mine roofs of limited thickness.

A thin roof bed which is stressed with evenly distributed lateral load and supported with barrier pillars will be regarded as …

Air Flow Through Cloth Screening, Kurt Rauf Basakinci

Masters Theses

"The object of this investigation is to obtain an expression whereby flow of air through woven cloth can be predicted with a reasonable degree of accuracy, in terms of the pressure drop across the screen, the density, the viscosity of the air flowing; these latter properties being functions of the pressure and temperature of the air.

The development of an expression from which to predict the relationship between the air flow through a screen and the pressure drop across it without resort to experimental procedure seems to the author to be worthwhile undertaking.

The chief aim of this investigation was …

Investigation Of Stress And Crack Distribution In Concrete Slabs Containing Welded Wire Reinforcement, Joseph H. Senne

Masters Theses

"Concrete is daily becoming more important as a structural material. However, without steel reinforcement, concrete would never have attained such wide use since, being weak in tension, it must be combined with some other material to take the tension stresses and prevent the tension cracks in the concrete from opening an appreciable amount.

One type of steel reinforcement used particularly for footings, beams and columns is known as deformed bar. In this case deformations are placed on the bars at the time of rolling. These deformations act as mechanical anchorage in preventing the bar from slipping, thus allowing it to …

The Effect Of Back Pressure Created By A Venturi Tube On Power Output And Efficiency Of An Internal Combustion Engine, James J. Trace

Masters Theses

"The exhaust pressure against which an engine works affects the amount of pumping losses, the volumetric efficiency and the rate of advance of the flame front during the combustion process.

When the back pressure is decreased to the same pressure as the intake pressure, the amount of negative work done during the exhaust-intake process approaches the positive work done during the process. It can be seen from a PV diagram that it is possible to make this negative work less than the positive work and gain work during the process.

Because of the "15 to 30 degrees” of intake valve …

An Investigation Of Ruthenium As A Possible Ceramic Colorant, John Charles Williams

Masters Theses

"Some portion of almost every writing dealing with the historical development of ceramic products is devoted to describing the application of colors as found on even the most ancient specimens known to exist. A vase bearing the name of an Egyptian king living 5000 B. C. was glazed in green and inlaid with purple. There are many such examples of the utilization of color in ceramics which illustrate to a certain extent the aesthetic tastes of the very earliest and primitive civilizations.

In those early times, only a few elements were known and available that could be used for such …

A Study Of An Industrial Waste Produced In The Manufacture Of Titanox, Kurt H. Frank

Masters Theses

"The problem involved in this thesis is definitely of an industrial nature in that it deals specifically with waste from a plant that is primarily concerned with the manufacture of pigment.

….the plant does have a method of recovering the soluble titanium by returning the overflow from the Dorr thickener to the digestion tanks to dilute (cut) the digestions. However, in the underflow (sewer) there is a tremendous amount of sludge that is sent directly into the nearest stream because of failure to realize something economical to do with it. This sludge contains roughly 30 per cent solids of the …

A Study Of Some Raw Materials For The Manufacture Of Silica Brick, Charles E. Shulze

Masters Theses

"The ability of silica to carry a load to within a few degrees of its melting point and its tolerance for comparatively high concentrations of iron oxide and lime, have enabled it to maintain its position as the number one steelplant refractory. It is estimated that at least half of the volume of refractories used in the steel plant are silica bricks. Consequently the manufacture of silica refractories forms an industry of considerable importance.

Raw materials suitable for the manufacture of silica brick are widely distributed, but only a small number of deposits are used commercially for one reason or …

The Effect Of Temper Carbon Nodule Number On The Physical Properties Of A Malleable Iron, William J. Ruprecht

Masters Theses

"It is known that the number of temper carbon nodules per unit volume of malleable iron has an effect on both the rate of anneal and on the resulting physical properties, but neither have been clearly worked out quantitatively. The purpose of this investigation is to ascertain the effect of temper carbon nodule number on certain of the physical properties of a commercial malleable iron.

Quantitative determinations of the effect of temper carbon nodule number would be essential from a theoretical viewpoint in working out the mechanism of graphtization, and would be useful in commercial practice in showing the most …

Uses And Advantages Of Short Period Delay Blasting Systems In Mining And Quarrying, Irving C. Falk

Masters Theses

"One of the most recent developments in blasting practice is that of applying the principle of short period delay electric blasting. In this type of electric blasting, instead or having all holes fire at one time, each hole or group of holes is a shot in itself. To provide a short period delay, of a few thousandths of a second, between each hole or group of holes, either millisecond (split-second) delay electric blasting caps or a suitable delayed action blasting switch may be used.

Short period delay electric blasting systems were originally developed for use by quarries in or near …

Well Interference In The South Silica Field, Langdon B. Taylor

Masters Theses

"During World War II the Federal Government restricted oil-field drilling in the United States in order to conserve steel. The wartime regulations required 40-acre spacing in most areas. At the close of the war, the Federal drilling restrictions were lifted, and control of oil-well spacing reverted to the several state regulatory bodies. Each of these state agencies was then confronted with this problem: should 40-acre spacing be continued or should pre-war 10- and 20-acre spacing patterns be re-established?

The regulatory authority in Kansas, the State Corporation Commission, ordered an investigation in January, 1946, for the purpose of developing information upon …

The Depression Of Quartz In Sulphide Flotation, William Mcminn Billinghurst

Masters Theses

"The flotation of sulphide minerals from siliceous and calcareous gangue minerals always gives a concentrate that is contaminated to a greater or lesser degree with the gangue minerals, even though the collectors used do not show any appreciable collecting properties for the gangue minerals when they are treated alone. In an effort to reduce the amount of undesirable gangue mineral floated with the concentrate it is the practice to add arbitrary amounts of various reagents such as quebracho, alkali hydroxides, carbonates, silicates, sulphides, phosphates, fluorides, and sulphuric acid which have been found to be advantageous. The mechanism of depression is …

The Relationship Between The Centrifuge Moisture Equivalent And The Vacuum Moisture Equivalent In Soils, Samuel Payton Halcomb

Masters Theses

"Soil is a material that has been formed through the influence of many different natural agencies. The engineer is not so much interested in how the soil was formed, but he does want to know the characteristics of the soil with respect to its use as a structural material. Therefore, the engineer is primarily interested in the physical properties of soils.

Much progress has been made during the past twenty five years in the study of Soil Mechanics, but even today there is a tendency among engineers to think of soil as just a mixture of clay, sand, silt and …

Problems In Theatre Lighting And Pre-Selective Elctronic Lighting Control, Hasan Orhan Aker

Masters Theses

"Until the recent years, because of the lack in technical know-how of play producers and on the other hand the limited knowledge of the engineers about stage technique, all the advantages provided by efficient stage lighting could not be exploited. Especially, the different problems encountered from the point of view of lighting control, could not be solved for a long time.

It has been proven from theatres built lately, that the stage lighting designs made without a thorough study of the various stage conditions and requirements lead to a tremendous increase in cost and also inefficient operation of the whole …

The Reactions Of The Sodium-, Potassium-, And The Lithium Tungsten Bronzes In The Solid State, Keki Khodadad Irani

Masters Theses

"The first part of this dissertation has the intention of determining whether MoO₃ forms solid solutions with Na-W bronze corresponding to the formula NaWO_3(1-x) (MoO₃)_x and whether the so-called “sodium-molybdenum bronze” exists.

The next part is concerned with the solubility of K-W bronze in Li-W bronze at high temperatures, in a vacuum, and the last part or this work has the intention of studying the solubility of K-W bronze in Na-W bronze at different temperatures.

The interest in this work is of a purely scientific nature rather than of academic interest"--Introduction, page 1.