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The Solubility Of Calcium Sulfate In Sodium Chloride Solutions, Edward Walter Mockobey

Masters Theses

"The purpose of this investigation was to determine the effect of sodium chloride on the solubility of calcium sulfate, and also, if possible, the effect of sodium chloride on the transition temperature for gypsum and anhydrite"--Purpose of the Investigation, page 4.

Highway Bridge Design And Construction In Missouri, James Lingan Pasley

Professional Degree Theses

"The design and construction of highway bridges is a subject so broad and includes so many different specialized branches of engineering that volumes would be required to discuss the matter in any detail. With this in mind, the writer will attempt to cover in the following paper only a brief outline of the different phases of the work and to show how a number of the special problems are handled by the Bureau of Bridges of the Missouri State Highway Department. The writer, having had seven years experience as detailer, designer, engineer of construction assignments, and chief draftsman with this …

A Study Of Water Supply Districts In St. Louis Where Excessive Waste Of Water Has Occurred, Randall Anthony Scheer

Professional Degree Theses

"The City of St. Louis contains within its city limits, according to the latest census, 870,000 people. The City is supplied with filtered water from two sources, one on the Mississippi River at the Chain of Rocks and the other on the Missouri River at Howard Bend. This water is distributed to consumers through 1,170 miles of water pipe and 147,912 service taps. Included in this distribution system are 14,334 fire hydrants and 16,884 valves. Every pipe joint, every fire hydrant, every valve and every plumbing fixture is a potential source of leakage, and it has become necessary to develop …

Die Steels And The Heat-Treatment Of Dies For Use In Die Casting Aluminum Base Alloys, Elmer Gammeter

Professional Degree Theses

"Although the casting of metals is an ancient art, it was not until recent years that metals were cast in large quantities in metallic molds. The increasing demands on the industry for greater production brought about this change which essentially involves the introduction of molds capable of producing numerous castings in preference to the use of non-metallic molds which were destroyed in making the casting"--General Consideration of the Die Casting Process, page 1.

Investigation Of Continuous Beams With Varying Moment Of Inertia By The Method Of Conjugate Points, Russell Arthur Bryant

Professional Degree Theses

"This design represents the application to a practical example of a rapid and direct graphic solution of the relation expressed by the Theorem of Three Moments. This method for obtaining moments in continuous beams eliminates the necessity of using arbitrary coefficients and gives the engineer an opportunity to exercise his ingeniuty [sic] and judgment toward obtaining efficiency and economy. The use of prescribed coefficients for continuous beams makes the design mechanical and unscientific and results in moments which may be 50% too small or 60% too large"--Introduction, leaf 1.

Rainfall-Runoff Studies For Typical Blocks In St. Louis, Frank Leroy Flynt

Professional Degree Theses

"The following paper may be considered as a progress report on one phase of a study, now being made by the writer, of the rainfall and runoff records which have been collected over a long period of years under the direction of Mr. W. W. Horner, Chief Engineer of Sewers and Paving of the City of St. Louis. The mass of data which has been collected during this time is of considerable volume and even the information applicable to the single phase of the investigation discussed in the following pages, which is the runoff from typical city blocks, has not …

Mining Methods At The Arevalo Mine, El Chico, Hidalgo, Mexico, John Gay Reilly

Professional Degree Theses

"The Arevalo Mine of the Cia.de Real del Monte y Pachuca is located nine kilometers north of the City of Pachuca, Hidalgo, Mexico. It is reached by an excellent automobile road from Pachuca. Several different branches of the Mexican Railway System place Pachuca within easy access of the different entries of Mexico"--The Arevalo Mine, Location, page 1.

The Public Health Engineer's Part On A Health Program, Walter Eric Casey

Professional Degree Theses

"In this work the Public Health Engineer should not be confused with the Sanitary Engineer as the term is commonly used today. The Sanitary Engineer is primarily a designer or builder. He is, in fact, a civil and hydraulic engineer specializing in a rather restricted field, confined for the most part to works relating to municipal water supply and sewage. The Public Health Engineer on the other hand is primarily a student and worker in the field of public health. The range of his activities is wider, and his training and knowledge are of essentially different character. It is not …

Ventilation At The Portovelo Mines, John Paul Harmon

Professional Degree Theses

"This paper was written with two objects in view: (1) To describe in detail what has been done toward the ventilation of the main unit of the Portovelo mines and the results; (2) to give information that may be useful to anyone who may have to make a preliminary mine ventilation survey, with recommendations for the improvement of the existing system and finally the maintenance of the improved system"--page 1.

Flood Control Measures For Salina, Kansas, Robert Justice Paulette, Guy Robert Scott

Professional Degree Theses

"This thesis is based upon the data assembled and engineering studies made preliminary to the design of a project for the protection of the City of Salina, Kansas, and its environs, from the overflow waters of the Smoky Hill River and Dry Creek, a small stream paralleling the river, and to a lesser extent, from the overflow waters of the Saline River and Mulberry Creek. These data and studies, together with recommendation for the project and preliminary estimates of cost, were included in a report to the City of Salina in October, 1929, prepared jointly by R.J. Paulette, then engineer …

Preparation And Use Of Maps For Highway Purposes, Homer A. Hollingshead

Professional Degree Theses

"The Illinois highway system consists of about 10,000 miles of primary (state) roads, and 20,000 miles of secondary (county) roads.

The preparation of plans for a primary and secondary highway system of such size is an obvious step prior to construction and maintenance.

In order to coordinate administration, location, surveys, right of way, construction, maintenance, traffic, legal and political activity, maps of various scales and types are required.

This treatise will consider the types and classes of maps used by the state of Illinois for the purposes mentioned"--Part I.

The Effect Of Different Rates Of Ram Movement On The Transmission Of Pressure In Dry Pressed Bodies, Frank Joseph Zvanut

Bachelors Theses

"The object of this investigation was to study the relationship between the rate of ram movement during the initial application of pressure and the transmission of pressure in the dry press process; to study the effect of various rates of ram movement; and, as far as possible, to determine the critical rate for uniform pressure distribution within the body"--Purpose of Investigation, page 4.

The Purification Of Missouri Fire Clays, James Joseph Offutt

Bachelors Theses

"At the present time there appears to be an unlimited supply of high grade fire clay available for most any purpose. But some time in the future there will rise the problem of purifying the low grade clay to such an extent that it will be used in high grade fire clay products. Whatever purification method may be employed it must be applicable on a commercial scale and the cost of purification must be very low. Until the present time little if any work along this line has been reported. Apparently no one has ever attempted any serious efforts to …

Development Of An Artificial Substitute For Firestone, Joseph Edwin Stevens

Bachelors Theses

"Firestone is a natural occurring silica rock which is cut up into brick and shapes and used for lining cupolas. This rock is found in the east, mostly in Pennsylvania. It is dense, having a porosity of 5.6% raw and 16% after firing to cone 18. Its volume expansion upon firing was calculated to be 19.2%. Its appearance shows that it is evidently fine grained silica bonded with a small amount of clay and siliceous cement. This rock has such desirable characteristics for use in cupola linings that it would be of great importance to duplicate this rock synthetically in …

Concentration Of An Oxidized Lead Ore From Southeast Missouri, Robert Edward Evans

Masters Theses

"In the main ore bodies of the Southeast Missouri Lead Belt the lead occurs as galena disseminated in dolomite. The concentration in the mills is by tabling and flotation. The grade of the concentrates and the recovery of the galena are excellent. However, in certain areas of some of the mines ore has been developed that does not concentrate so readily. Because of its reddish brown color this ore is known locally as "red ore", and the presence of oxidized lead has been suspected. The purpose of this investigation was to determine the extent to which oxidized lead minerals were …

A Study Of Some Methods Of Concentrating Uranium And Radium In Carnotite Ore, H. L. Gibbs

Masters Theses

"Carnotite ore is a source of radium and it is the recovery of this element which is chiefly sought in its treatment. The radium results from the radioactive disintegration of uranium which is one of the constituents of the yellow mineral carnotite. The ores are largely low grade. Higher grade pockets occur scattered in the deposits and because of their irregular occurrence are not easily located. The larger low grade deposits which are more easily accessible contain considerable quantities of calcium carbonate and oxide minerals. These cause a high consumption of the acid used in the chemical treatment of the …

The Control Of Anode Corrosion, Edward Arthur Godat

Masters Theses

"This particular study of the control of anode corrosion in connection with the production of zinc by electrolytic deposition from commercial solutions is a continuation of work started at the Missouri School of Mines and Metallurgy in 1929. It is not a new problem or even a new phase of the problem, but rather an attempt to confirm some of the ideas brought out in previous work and to perhaps more definitely establish some of the conclusions drawn from insufficient data, by more extensive tests and by attacking the problem from a slightly different angle"--Introduction, page 1.

Preliminary Construction Of A Photo-Electric Cell Concentrator, Stanley S. Williams

Bachelors Theses and Reports, 1928 - 1970

The separation of the valuable portion from the waste portion of an ore is an individual problem for every ore. However, the various methods for accomplishing this end, more or less classify themselves by the physical properties of the constituents of the ore. Most of the properties of minerals have been utilized in some way or other to affect the separation of the valuable from the invaluable parts. Practically nothing has been done so far with color and luster to attain this purpose.

It is believed that the photo—electric cell could also be used in concentrating a certain class of …

A Study Of Washing Machines, Edna B. Snyder, Morton P. Brunig

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The purpose of this investigation was to study the performance and constructional features of various types of washing machines. The machines studied were of four types, classified on the basis of mechanical construction. The types were dolly, gyrator, cylinder, and vacuum. Eight machines were studied, four of the gyrator type, two of the dolly type, one of the cylinder type, and one of the vacuum type. The material reported in this bulletin includes the following: (1) cleansing action of various washing machines and relation of cleanness of fabric to length of washing period, temperature of water, and size of load; …

A Study Of The Plating Prohibitive Properties Of Various Separators, Bruno J. Pozorski

Bachelors’ Theses

The problem of this thesis is to study the plating prohibitive properties of the various materials commonly used in the manufacturing of separators, and to indicate which material would be most serviceable and feasible in a separator. At one time positives and negatives were kept not more than 0.25 inches apart, with the idea of reducing the intervening layers of electrolyte, and, therefore, the internal resistance of the cell, as much as possible. It was, however, found that the output could actually be increased by putting the plates at greater distances, the fact being that the larger bulk of solution …

The Comprehensive City Plan Of Jacksonville, Florida, George W. Simons Jr.

City and Regional Planning -- Florida

Jacksonville, Florida

Comprehensive city plan of Jacksonville, Florida. Prepared at the direction of the City Commission of the city of Jacksonville under the guidance and supervision of the City Planning Advisory Board by George W. Simons, Jr. Jacksonville, Fla. : Simons, 1931. Includes Supplement no. 1, Zoning map...of Jacksonville, Florida. Map of Jacksonville, Florida and vicinity...1928. (Maps in oversize map box 19). PALMM.

Road And Bridge Department And Jacksonville - St. Johns River (Toll) Bridge, Board Of County Commissioners Of Duval County, Florida

Books

A report by the Board of County Commissioners of Duval County Florida issued January 20, 1931, it includes statistics for roads: fund expenditures, maintenance costs, construction costs, maintenance cost of convicts, building costs, cost of shell and bonded indebtedness. It also includes statistics for the bridges and Toll bridge including expenditures, bonds, financial statements, bridge permits and toll permits. Arthur N. Sollee Collection - M84-1 Box 14 fold. 65b. PALMM

Some Early Geologists And Their Work In Montana, John E. Blixt

Bachelors Theses and Reports, 1928 - 1970

This paper marks an increased refinement and more detailed accuracy in the description of the geological features of the state. It includes the recent studies of mineral deposits, of oil structures, of the formations of bedded rocks and their included fossils, carried on both by the Federal and State governments and by various interested private persons, such as the mining companies. It is within this period that the Federal Government encouraged the U. S. Geological Survey in the publication of monographs on the National Parks, papers of great popular interest and educational value making these beautiful regions comprehensible in their …

Age Relationships Of Ore Deposits Of Southwestern Montana (A Microscopic Study), Charles R. Trueworthy

Bachelors Theses and Reports, 1928 - 1970

Although considerable work has been undertaken by some prominent geologists, the best known of which is that of Paul Billingsley and J. A. Grimes', in investigating the ore deposits of the Boulder Batholith and surrounding area, there has not been any complete microscopic investigation of these deposits, as a whole, published in the literature. With this in mind it was suggested to the writer by Professor Paul A. Schafer, of the Montana School of Mines, that a microscopic study of the ores of this region would be a worthwhile geologic problem.

It was thought that the mineral association and the …

A Preliminary Study Of The Separation Of The Copper Sulfides From Sphalerite And The Effect Of Certain Reagents On Some Of The Pure Copper Minerals In Synthetic Mixtures, Gailen T. Vandel

Bachelors Theses and Reports, 1928 - 1970

The problem of separating the copper sulfide minerals from sphalerite, in copper - zinc ores, has been a difficult one. This is largely due to the lack of adequate research and the small amount of data obtainable on the behavior of copper and zinc sulfide minerals in flotation circuits.

Discrepencies Of Theory As Against Empirical Results Of Critical Speeds Of Circular Cross Sectioned Shafting, Vern Kilpatrick

Electronic Theses and Dissertations

The scope of this thesis included computations and tests showing the first critical speeds of two shafts each 5/8" dia x 38" long one of C.R.S. and one of hard drawn brass. The purpose was to find and tabulate the discrepancies between the computed values for the critical speeds and the empirical values for critical needs.

Test 185: Rumely Model 6a, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 191: Massey-Harris "General Purpose", Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 195: Cletrac Model 40-30, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 186: Bates Steel Mule Model 35, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.