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Effects Of Sand Admixtures On The Physical Properties Of Soils, Necati Kanatsiz

Masters Theses

"The purpose of this study is to determine the effects of sand admixtures on the physical properties of soils. Soil may be defined as a heterogenous [sic] collection of rock and mineral fragments whose decomposition and disintegration have been brought about by the action of physical, chemical, and biological forces, working singly or in combination...In the conviction that the study of soils, with respect to highway engineering, is becoming more and more important this study was undertaken in order to learn whether the addition of sand would lead to desirable results, and if not, at least secure some further addition …

An Experimental Study Of Crystallization In Opal Glass, William C. Rous

Masters Theses

"Opal glasses are well known from use in such forms as ointment jars, lighting globes, wall panelling [sic], and decorative effects in glass vases. Cryolite, fluorspar, and sodium fluosilicate are used in varying proportions in most glasses of this type. Since little is known of the mechanism of crystallization in opal glass, there is a definite need of gathering further information on this subject. This information is of particular interest to the manufacturers whose products consist of this type of glass. Further information would aid in control of the characteristics desired and perhaps would allow a more economical control"--Introduction, page …

Effect Of Removed Web-Section On Critical Load For I-Beam Columns, Henri Simon Rigo

Masters Theses

"This investigation deals with a series of column tests of aluminum I-sections which have a perforated web. Specifically, the tests show that the weight is decreased without decrease in strength. Several basic assumptions are made in the design of a column. The physical action of a column is idealized in the derivation of formulae which will predict within reasonable limits the load which the member will sustain. In a given installation of non-homogeneity of material, kinks, uneven bearing, lack of symmetry due to riveting or welding, stress concentration and many other disturbing factors not in agreement with these assumptions may …

Calibration Of Weirs By Means Of Critical Flow And Specific Energy, Robert A. Rapp

Masters Theses

"For many years man has been relying more each day upon metering devices to measure the flow of fluids in industry. The orifice, orifice meter, venturi meter, pitot tube, nozzle, flume and the weir have been employed, each having its own particular advantage.

In this parade of metering progress, the contracted weir has long been the forgotten brother of the suppressed weir. In almost every textbook on hydraulics or fluid mechanics, the following words appear, "end contractions are to be avoided where the weir cannot be calibrated". This skepticism and the length or absurdity of some contracted weir formulas led …

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 …

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. …

Development, Application And Operating Results Of The Center Peripheral Discharge Rod Mill, David Porter Hale

Professional Degree Theses

"The use of a rod mill for producing manufactured sand is not a recent application. A Marcy Open End Rod Mill has been operating at the plant of the Sun Sand Company, Thayer, West Virginia, since 1925. In early 1940 an 8' x 12' rod mill of the open end type was installed at Shasta. Dam, near Redding, California for sand production. In 1942 work began on Fontana Dam, a Tennessee Valley Authority Project on the Little Tennessee River. The flow sheet included two 9' x 12' high discharge rod mills driven by a single 800 H.P. motor. All of …

Experimental Studies Of The Effect Of Moisture On Strength Of Mine Roof-Shales, Rolf W. Roley

Professional Degree Theses

"The mining and production of coal by underground mining operations has long been recognized as one of this nation's most hazardous industries. Tabulated data from the State of Illinois, for example, reveal that in that State between 1882 and 1945 there have been 7,789 men killed in coal mining accidents of one form or another. Further inspection of the data indicates that 3,711 of these men were killed underground by falls of roof or rock….

As previously stated, this experiment was designed to determine whether or not any appreciable change in strength as measured by Transverse Breakage would result from …

A Mineral Dressing And Economic Study Of A Complex Arsenical Ore, Luigi D. Piana

Bachelors Theses and Reports, 1928 - 1970

The factors that influence the choice of a method for treat­ment of an ore comprise the technical and economic limitations and advantages, derived in detail and balanced according to the exigencies of the particular situation.

Caustic Leaching Of Montana Chromite, Chester Freshour

Bachelors Theses and Reports, 1928 - 1970

Chromite is the most important ore used for the production of chromium and chromium alloys. At present, the domestic production is insignificant as compared with the amount of chromite consumed in the United States.

An Investigation Into The Precipitation Of Copper From Mine Water, Using Sulfur Dioxide To Reduce The Ferric Ion Content, David S. Gleason

Bachelors Theses and Reports, 1928 - 1970

The experiments which were preformed showed that sulfur dioxide would reduce the ferric ion content of the mine waters to a very low figure. The reduction in the ferric ion content would improve the efficiency of the precipitation process, and also increase the recovery of copper.

Application Of The Electric Furnace To The Melting Of Cathode Copper At The Tacoma Smelter, Alvin H. Nelson

Bachelors Theses and Reports, 1928 - 1970

In the field of copper metallurgy, the major chang­es effected in the original metallurgical scheme have been based largely upon the lowering in grade of copper ores, and the more particular demands of the fabricators of the metal. The former trend fostered the development of mineral beneficiation, which in turn caused the con­version from blast furnace to reverberatory furnace smelting.

The Casting Of Anodes For The Series System Of Electrolytic Copper Refining, Robert R. Kupfer

Bachelors Theses and Reports, 1928 - 1970

The electrolytic refining process, while usually considered an auxiliary process used in conjunction with pyrometallurgical extraction, deserves a special niche in the complex metallurgy of copper. The development of electrolytic copper refining, for example, is largely responsible for the prominence of the electrical industry. Conversely, it could be stated that the electrical industry played an important part in the development of the copper industry.

Application Of Thermistors To Temperature Measurements In Experimental Investigations, J. F. Herrick, Earl A. Glarborg

Journal of the Minnesota Academy of Science

No abstract provided.

A Preliminary Investigation Of The Titanium-Copper Equilibrium System, August Robert Savu

Masters Theses

"The element titanium has a high degree of chemical activity at room temperature when in a finely divided condition. In the massive state this activity is only exhibited at high temperatures. The powdered metal is highly pyrophoric. Titanium forms quite stable sulphides and carbides, although these are subject to oxidation at high temperatures. It also form nitrides. Titanium being a transitional element forms hydrides with hydrogen which are stable at ordinary temperatures, but which dissociate at red heat liberating the hydrogen and leaving the metallic titanium in a very active state. Alloys are formed with such metals as aluminum, manganese, …

A Study Of The Power Consumption Of Mine Scrapers, Stanley Francis Johnsen

Masters Theses

"Since scrapers were first employed in underground mining work, numerous changes in scraper design have transpired until now there are several common types of scrapers in use in mines over the world. The proved models of scrapers have been developed over a period of more than fifty years. Although specific scrapers have been tested to determine the amount of power consumed, no literature could be found concerning the relative power consumption of the different types of scrapers when operated under identical conditions. Purpose of Problem - The purpose of this study is to determine the relative efficiency of different types …

Aerodynamic Research For An Improved Rotor Control System On Helicopters, Delmar Wallace Breuer

Masters Theses

"Since the author has always been interested in Aeronautical Engineering, and in particular, rotary-winged-aircraft, the problem of research for aerodynamic improvement of rotary-wing control systems was chosen. This problem was suggested by the Army Aircorps Officials of Wright-Patterson Field of Dayton, Ohio as being a valuable and practical problem for the government. It is also valuable and practical for the author since it follows his general course of undergraduate study and since it fits closely into the field for which he is preparing himself...The requirement with which the author is most concerned is the design system for the producing of …

Analytical Investigation Of Thin And Moderately Thick-Walled Tubing Under Peripheral And Biaxial Loading, Frank Joseph Cizek

Masters Theses

"The problem then, resolves itself into a study of the behavior of thin-walled and moderately thick-walled cylinders under the effects of an external fluid pressure acting alone, or the effects of an external fluid pressure acting simultaneously with an axial loading. In this thesis a theoretical or analytical approach will be used. Some application and reference will be made to oil-well casings in particular, but the solutions will not be restricted to oil-well casing alone. it must be recognized that the tubing problem involves the problem of unstability before the proportional limit of the metal is exceeded and a similar …

The Barite Industry In The United States, James Byron Chaney

Masters Theses

"Within the past few years, barite has become one of the most important non-metallic substance mined in the United States, as expressed by the large increase in production since 1943. The purpose of this treatise is to combine in a single volume important information concerning the geographical distribution, geology, mining methods, milling or beneficiation methods, production and utilization of barite in the United States. A large number of references has been used in preparing this treatment. The information has, as far as possible, been brought up-to-date. It is thought by the writer that the paper will present to the reader …

Design Of A Wind Tunnel For The Missouri School Of Mines And Metallurgy, William E. Speece

Masters Theses

"For some time there has been a need for a wind tunnel at the School of Mines for experimental work in the Civil and Mechanical Engineering Departments. With the expanding program and the possibility of establishing an Aeronautical Engineering School here, the need will be even more pronounced. So the problem will be of definite practical value. It was the original idea to design a small tunnel, build the tunnel, and to run a series of smoke tests on various structural models. However, after discussing the possibility of such a problem with school authorities, it was decided that if a …

A Correlation Of Formulas For The Flow Of Fluids In Pipes, John Gorman Duba

Masters Theses

"At present there exist two quite distinct fields in fluid flow in pipes, the one in water supply and the other in the petroleum industry. It is the purpose of this paper to discuss the various pipeline flow formulas as used in both fields and to correlate the exponential type formula which is much used in practice with the Nikuradse curves obtained in the laboratory"--A Brief Historical Review, page 5.

The Fort Union Formation Of Montana And Adjacent Areas, Charles Christman

Bachelors Theses and Reports, 1928 - 1970

The Fort Union formation is one of the most import­ant and best known geologic formations of the northern Great Plains, and is found lying almost horizontal at the surface over large areas in this region.

A Discussion Of The Geology And An Isopach Map Of The Pennsylvanian System In Wyoming And Adjacent Areas, B. R. Alto

Bachelors Theses and Reports, 1928 - 1970

Pennsylvanian strata in Wyoming and adjacent areas have been the subject of much work and discussion. Most of the work has been due to the economic importance of the system as an oil producer in this region. Oil production from strata of Pennsylvanian age is rather recent history; and therefore, much of the available information is local­ized and incomplete.

An Isopach Map And A Discussion Of The Permian In Wyoming And Adjacent Areas, Willard Leskela

Bachelors Theses and Reports, 1928 - 1970

The accelerated post-war demand for petroleum products with resultant high prices and dwindling reserves has spurred producers to an extensive search for new fields and for ad­ditional production in known fields. Exploration and discov­ery is dependent on the collection and correlation of vast amounts of data both in the field and that found in liter­ature.

Roasting And Leaching Of Montana Chromite, Jerry D. Murphy

Bachelors Theses and Reports, 1928 - 1970

The United States, although the leading consumer of chromite, depends almost entirely on imports for its supply. Domestic production of chromite is limited, because high-grade imported ore is plentiful and inexpensive in normal times. There are several large deposits of chromite in the United States, representing millions of tons of low grade ore. These deposits form a strategic reserve that must be used in time of national emergency.

Sulfatizing Roasting Of A Copper Sulfide Ore, Walter D. Finnegan

Bachelors Theses and Reports, 1928 - 1970

At present copper sulfide ores are recovered by pyrometallurgical processes. While the recovery of cop­per from sulfide ores by hydrometallurgical means has long been considered attractive, the impurities, low re­covery and mechanical difficulties have kept this process from becoming commercial.

A Study Of The Diffusion Of Electroplated Coatings In The Solid State., Michael R. Writt

Bachelors Theses and Reports, 1928 - 1970

The term diffusion means an equalization or homogenization of diverse materials. Specifically ap­plied to metals, diffusion is the interchange of atoms. It is, in effect, an invasion of one crystal lattice by the atoms of one or more other crystal lattices. Therefore, the study of diffusion must involve the geometry and physics of crystal lattices as well as their energies.

The Drainage Problem In The Draper Area, Utah, Stanley H. Van Orman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As a rule, in the practice of irrigation, more water is delivered to a project than is used by the plants, evaporated, or removed by natural drainage. It is now generally accepted that, in the West, irrigation and drainage are necessary complementary practices. With comparatively good irrigation practice the efficiency is about 34 percent; that is, approximately one-third or the water is actually used by the crops. With rather poor irrigation practice the efficiency may drop as low as 12 percent.

A Study Of The Physical Properties Of Low Tin Solders, Cornelius P. Dwyer

Bachelors Theses and Reports, 1928 - 1970

In 1947, out of the 100,000 long tons of tin con­sumed in the United States, 25,000 tons went into solder. Tin plate took 39,000 tons while babbit, bronze and coll­apsible tubes accounted for approximately 17,000 tons. Solder ranked second to tin plate and required more than the next three major uses combined.

The Effect Of Manganese And Magnesium On The Hardening Of Copper-Aluminum Alloys, Robert M. Hansen

Bachelors Theses and Reports, 1928 - 1970

During recent years, duralumin and all aluminum alloys have been made the object of much discussion regarding their hardening mechanism. The commercial success of nearly all of the alloys of aluminum and mag­nesium is dependent on their ability to age or precipitation harden.