Digital Commons Network^™

Effects Of Higher Speed Explosives In Drift Rounds, Harve Preston Nelson

Masters Theses

"There is much still to be learned of what takes place in the actual explosive zone of a rock blast. Many factors, both known and unknown, have individual and collective effects. A program is now in progress by the Mining Department of Missouri School of Mines and Metallurgy for developing and preserving information about some of the factors affecting the use of explosives. Some work has been done. More is now being completed by Messrs. R. J. Jones and J. B. H. Fitz-William. Present plans call for continuing the research and gathering data on this subject which is so important …

Investigation Of The Effect Of Absorption Tower Size Upon Overall Mass Transfer Coefficients, James Robert Murrell

Masters Theses

"The purpose of this research project was to obtain data and determine whether or not a correlation exists between tower size and the overall mass transfer coefficient for a packed tower. A constant ratio of tower diameter to packing diameter of twelve to one was maintained. Three absorption towers were used; a twelve inch diameter iron tower, a six inch diameter iron tower, and a three inch diameter glass tower. One inch, one-half inch, and one-fourth inch Raschig rings were used in the corresponding towers as packing. The system used was the absorption of acetone by water from an acetone-air …

The Transformation Of The Aluminum-Zinc Eutectoid Alloy At Subcritical Temperatures, Thomas Joseph Burke

Masters Theses

"Interest in the mechanism of the austenite eutectoid transformation in iron-carbon alloys, especially as produced by the isothermal sub-critical techniques introduced by Davenport and Bain, has resulted in the application of similar heat treatment studies to the eutectoid transformations in other alloy systems. The study of the eutectoid transformation is of both fundamental and industrial interest because past experience has shown that these studies yielded much information concerning the nature and mechanism of the changes in eutectoid alloys during the decomposition of the phase stable at high temperatures and has also contributed much toward the development of new properties to …

Geology Of The Crystal Mine, Hardin County, Illinois, John Amsden Emery

Masters Theses

"The study of the geology and mineralization of the Crystal Mine was undertaken at the suggestion of Mr. Dodson G. Gibson of the Crystal Fluorspar Company, who allowed access to the mine and its records for this purpose. The problem was to develop a system of prospecting the so-called bedded-replacement fluorspar deposits of Hardin County, Illinois. It is believed that an economically feasible method has been developed. This method involves not only the actual finding of fluorspar, but also serves as a guide in revealing structural trends suggestive of mineralization.

The fluorspar deposits of the Crystal Mine are representative of …

Safety And Health In Mining, John Philip Lacke

Masters Theses

"The mining industry has long been criticised severely because of its high rate of accident occurrence. Statistics, which, however, are not strictly comparable show that the accident-frequency rate in all mining is currently about three times and the accident severity rate is about seven times as great as the average for general industrial work in the United States. Figures such as these are by no means comforting to mining men. They constitute a challenge to the industry that cannot be ignored.

It must be remembered that any type of mining is more hazardous than most or the other major occupations. …

The Development Of Plans For A National Airport For Ankara, Turkey, Mehmet Ragip Samli

Masters Theses

"'The present rapid development of general interest in aviation has brought to the front a new field of engineering. Development of the airplane has already reached a stage where the limit of its usefulness seems fixed only by the places which may be provided for taking off and landing. Due to the newness of the problem, not every one on whom responsibility rests recognizes the fact that the selection of the proper site and location for an airport is just as much an engineering problem as are its design and construction.'

The Turkish government began construction or the Ankara-Esenboga airport …

Construction And Operation Of A Vacuum Retort Pilot-Plant For Distillation Of Alloys, Robert Frederick Doelling

Masters Theses

"The widespread appearance of large scale vacuum systems operating commercially in the micron range of pressures has initiated a new field of industrial endeavor, vacuum engineering. The ever increasing number of applications of vacuo in commercial processes and laboratory research has stimulated the design and improvement of vacuum equipment, and at the present time equipment may be obtained to meet practically any need. In turn, the variety of available tools has directed the engineers attention to improving old processes and developing new ones through the utilization of vacuum techniques ... The possibility of producing a relatively high purity silver in …

The Freezing Temperatures Of The System Aniline-Ortho Toluidine, Ray W. Fahien

Masters Theses

"The purpose of this investigation was to determine the freezing temperatures of the system aniline-ortho toluidine and to speculate on the theoretical significance of these results. The properties of this system are of considerable practical engineering interest since the system falls in a class of low-freezing organic mixtures which may have value as fuels for jet propulsion devices required to operate at extreme altitudes or in Arctic regions. Since nitric acid has been found to be a very effective and convenient oxidizer, the search for a suitable fuel to be used in combination led to aniline as having the most …

Grouting And Freezing Unconsolidated And Water-Bearing Strata, Robert Walter Heins

Masters Theses

"The process of grouting has undergone many changes in recent years. A definition must, therefore, be inclusive. "Grouting" is the process of injecting, under pressure, into soil and rock through boreholes or other openings, any solution or suspension containing materials that harden, stiffen, or swell in void spaces to produce a solid or semi-solid impermeable mass. Various cements, chemicals, asphalts and clays are the materials used in the grouting process. The use of tailings is also considered a type of grouting, since some hardening or stiffening takes place. Cement grout relies on chemical reaction to bring about setting or hardening …

A Determination Of The Economic Feasibility Of Producing Marginal Gas Wells, Horace Tharp Mann

Masters Theses

"The purpose of this investigation is to show that it is economically feasible to produce marginal gas wells in such a manner that all the gas from the edge of the field will be captured by the first row of wells. In this problem the permeability of the sand is to be variable but known, and the effects of this variable permeability on the pressure distribution, and resulting gas production, will be discussed.

In many gas fields the point at which it is generally considered unprofitable to drill new wells is well inside the boundary of the reservoir. This is …

A Study Of Relative Ionic Mobility Of Alkali Ions In Dilute Alkali-Boron Trioxide Glasses As Deduced From Space Charge Considerations, Theodore J. Planje

Doctoral Dissertations

"The extensive investigations in the past have conclusively established that the alkali ions are responsible for the electrical conductivity of glass in both the brittle and viscous states; however, with the exception of one investigation in the brittle state, little consideration has been given to determination of the mobility of the alkali ion in such glassy systems. A review of the literature pertaining to the electrical conductivity of glass is presented.

A method, based on the rate of development of the ionic space charge responsible for polarization of conductivity cell employing direct current voltages, is proposed as a means for …

A Study Of The Dissolution Of Titanium In Acids With Emphasis On Hydrofluoric Acid, Ping-Chao Chen

Doctoral Dissertations

"Titanium is practically a new metal. Although it was discovered by W. Gregor in 1791, the pure metal was not prepared until 1910 by M. A. Hunter, and it is only very recently that tremendous interest has been focused on this new metal, as evidenced by the activities of numerous leading laboratories and pilot plants.

The reasons that Ti is gaining increasing attention may be attributed to the natural abundance of Ti ores in reasonable concentration and, what is more important, to its unusual combination of physical and chemical properties. According to F. W. Clark’s classical geochemical data, Ti amounts …

Measurement Of Flotation Rate As A Function Of Particle Size, Thomas Martin Morris

Doctoral Dissertations

“The Problem. The rate of flotation of solid particles determines the percentage recovery of these particles which can be obtained during a given time interval. An examination of operating data from a flotation plant shows that percentage recovery varies with the size of particle.

Many investigators have explored the problem of measuring flotation rate. In most cases the results obtained were expressed qualitatively. The results obtained by one worker were often at variance with results reported by another worker.

This investigation was undertaken with the object of (1) quantitatively measuring the rate of flotation of various sizes of particles and …

The Missouri Miner, December 16, 1949

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, December 09, 1949

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, December 02, 1949

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, November 18, 1949

The Missouri Miner Newspaper

No abstract provided.

Missouri S&T Magazine, November-December 1949, Miner Alumni Association

Missouri S&T Magazine

No abstract provided.

The Missouri Miner, November 11, 1949

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, November 04, 1949

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, October 28, 1949

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, October 21, 1949

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, October 14, 1949

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, October 07, 1949

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, September 30, 1949

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, September 23, 1949

The Missouri Miner Newspaper

No abstract provided.

Missouri S&T Magazine, September-October 1949, Miner Alumni Association

Missouri S&T Magazine

No abstract provided.

The Missouri Miner, July 22, 1949

The Missouri Miner Newspaper

No abstract provided.

The Missouri Miner, July 15, 1949

The Missouri Miner Newspaper

No abstract provided.

Missouri S&T Magazine, July-August 1949, Miner Alumni Association

Missouri S&T Magazine

No abstract provided.