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Articles 21391 - 21420 of 21777
Full-Text Articles in Engineering
The Copper Deposits Of Shannon County, Missouri, John Hyer Bowles, Lewis Ely Davidson
The Copper Deposits Of Shannon County, Missouri, John Hyer Bowles, Lewis Ely Davidson
Masters Theses
"The object of this report has been three-fold. First, it has been deemed necessary to discuss the general geology of the area about Eminence, showing the distribution and character of the different formations. The distribution is shown on a topographic map of the Eminence Quadrangle...In the second place, it is intended to give a detailed account of the history, development, and extent of mining operations in Shannon county, with the amounts of production and the occurrence of the ore. The third object of this report is to develop a probable theory for the genesis of the ore, and to discuss …
Furfural (Furfuraldehyde) And Some Of Its Derivatives, Marion Smith Badollet
Furfural (Furfuraldehyde) And Some Of Its Derivatives, Marion Smith Badollet
Masters Theses
"In the spring of 1919 the Eastman Kodak laboratories suggested to the chemistry department of the Missouri School of Mines and Metallurgy that experiments on small-scale production of furfural be undertaken. After a series of experiments a small amount of this product was made and a report was given before the American chemical Society at St. Louis in April 1920. The furfural prepared at the Missouri School of Mines and Metallurgy was sold to the Eastman Kodak laboratories. Within recent years very little experimental work has been done on furfural. It commands a high price as only small amounts are …
The Action Of Nitrogen Trioxide On Pinene, Ernest Wayne Rembert
The Action Of Nitrogen Trioxide On Pinene, Ernest Wayne Rembert
Masters Theses
"The action of nitrous acid on pinene was first studied by Pesci and Bettelli in 1885. they obtained an oil, which, when treated with NH₄OH and steam distilled gave a product of the formula C₁₀H₁₆NO₂. At this point the investigation was discontinued. It is the purpose of this work to show the true mechanism of the reaction and also to establish the formula and nature of the products obtained"--Introduction, page 3.
The Preparation Of Zinc Chloride From Smelter Waste, Victor K. Fischlowitz
The Preparation Of Zinc Chloride From Smelter Waste, Victor K. Fischlowitz
Masters Theses
"Interest in the matter of recovering zinc from residual material attaches through the value of a practical method of recovery consistent with commercial operations. The material used in this work at the Missouri School of Mines and Metallurgy was supplied by one of the large chemical firms of Saint Louis"--Introduction, page 3.
Mining, Concentration And Refining Of American Flake Graphite By The Griesemer Graphite Company, Joseph C. Barton
Mining, Concentration And Refining Of American Flake Graphite By The Griesemer Graphite Company, Joseph C. Barton
Professional Degree Theses
"The Griesemer Graphite Company was incorporated June 3, 1916, under the laws of Alabama, for the purpose of mining, milling and refining of flake graphite...Owing to strong competition in the graphite game, it will be impossible to give many interesting facts and figures in this thesis. The screen analysis worked for after each operation is carefully watched and the preparing of the ore, as well as the sizing of the flake, is one of the most important features in the production of flake graphite, especially that grade required by the crucible makers and the lubricating manufacturers. The carbon content is …
Unique Method Of Driving Large Tunnel At The Hannibal Quarry Of The Atlas Portland Cement Company, James Leonidas Boucher
Unique Method Of Driving Large Tunnel At The Hannibal Quarry Of The Atlas Portland Cement Company, James Leonidas Boucher
Professional Degree Theses
"During the development of operations at the limestone Quarry of The Atlas Portland Cement Company, Hannibal, Mo., it was found necessary to drive a large tunnel from one open "cut" to a point where the opening up and development of other "cuts" could be carried on"--page 1.
The St. Johns River Bridge For Duval County, Florida, Enoch Ray Needles
The St. Johns River Bridge For Duval County, Florida, Enoch Ray Needles
Professional Degree Theses
No abstract provided.
Metallurgical Bookkeeping, John Owen Ambler
Metallurgical Bookkeeping, John Owen Ambler
Professional Degree Theses
"A system of costs and metallurgical records similar to that outlined herein is in use in a number of modern Smelters, and is of interest as showing what information is desirable for proper plant control. From a study of this information, which is usually compiled monthly in such a manner that comparisons may be readily made, it is possible to modify current practice to obtain maximum operating efficiency, and to approximate very closely the benefit that may be derived from changes in and additions to the plant itself and the methods of operation, or in the materials received and treated. …
Metallurgy Of Steel Castings, Earl Joesting Mcnely
Metallurgy Of Steel Castings, Earl Joesting Mcnely
Professional Degree Theses
"This Thesis is in the form of a report of the observations of the author while working in the American Steel Foundries plants in various departments. The parts of the report dealing the Moulding and Inspection of castings were written while in the Indiana Harbor Indiana plant. The parts dealing with the Laboratory and Furnace Operation were written while in the Granite City, Illinois plant. The company owns and operates six other plants but the material covered in this report will, in a general way cover the operations in these plants, also, in which foundry work is carried on"--Introduction, Page …
Milling Practice Of The Missouri-Kansas-Oklahoma Field As It Has Developed In The Past Two Years, Frank Stillmann Elfred
Milling Practice Of The Missouri-Kansas-Oklahoma Field As It Has Developed In The Past Two Years, Frank Stillmann Elfred
Professional Degree Theses
"The writer has limited his subject to deal with the past two years as it is only the past two years that a great deal of research has been done in the field upon milling ideas and practices; but I will briefly give you the evolution of our present milling and concentrating practices by means of the following flow sheets"--Page 1.
Electrolytic And Furnace Refining Of Copper In South East Missouri, Ray Gould Knickerbocker
Electrolytic And Furnace Refining Of Copper In South East Missouri, Ray Gould Knickerbocker
Professional Degree Theses
"This article treats with the production of refined ingot copper from a Copper-Cobalt-Nickel Matte. The method employed to separate Copper from Cobalt and Nickel was the electrolytic process. The information given is the result of my experience as Superintendent of the copper department for The Missouri Cobalt Company, Fredericktown, Missouri. In order to simplify the article, it shall be divided into four parts, namely (1) the quality of product delivered to the copper department; (2) the leaching plant; (3) the electrolytic plant; (4) the furnace refinery"--Page 1.
Efficient Field Methods For The Petroleum Geologist, Phillips Brooks Dolman
Efficient Field Methods For The Petroleum Geologist, Phillips Brooks Dolman
Professional Degree Theses
"The methods and systems suggested for the use of the petroleum geologist in the following manuscript are intended not only as subject matter for a thesis but also, I sincerely wish, that they may be of some use and help to those of The Missouri School of Mines who are planning to take up petroleum geology as a profession, but have not yet had the opportunity to study the practical or field end of this work ... This article is by no means intended as a text; the principal object being, as previously stated, to offer a few systems, methods, …
Preliminary Study Of Possible Power Development On The Gasconade River, Charles Russell Barnard, Ronald Blair Wills, Harry Wesley Zieseniss
Preliminary Study Of Possible Power Development On The Gasconade River, Charles Russell Barnard, Ronald Blair Wills, Harry Wesley Zieseniss
Bachelors Theses
"The location of a possible dam site on the Gasconade River as a thesis proved to be a very interesting subject. Our first trip pointed out to us that we had undertaken a large task. We also realized that our subject was too big to complete thouroughly sic in the time alloted. Due to this circumstance we tried to cover the essential facts and to eliminate as much of the detail work as possible. For instance, we made no attempt to make a complete survey of the basin, instead, we ran surveys for some distance up the river to give …
The Microstructure Of Some Commercial Nickel Steels, Robert Newton Stubbs
The Microstructure Of Some Commercial Nickel Steels, Robert Newton Stubbs
Bachelors Theses
"In this thesis it was the author's intention to take up the microstructure of such nickel steel as is generally employed for structural work"--page 3.
The Factors Influencing The Price Of Metals On The Metal Market, Thomas Patrick F. Walsh
The Factors Influencing The Price Of Metals On The Metal Market, Thomas Patrick F. Walsh
Masters Theses
"Every year the various engineering and industrial magazines print curves showing the rise and fall of metal stocks throughout the year. to the ordinary reader, these curves are seldom intelligible; he sees the ups and downs; he knows that the prices have risen and fallen; but he rarely knows what causes these changes -- and the curves themselves never tell. This paper tries to remedy this defect; it draws its curves, and, in the light of historical events, which it recounts, tries to determine the causes for the fluctuations in the market. it further places these factors on the curve …
The Preparation And Physical Properties Of Benzene- And Toluene-Sulphonamides, Karl K. Kershner
The Preparation And Physical Properties Of Benzene- And Toluene-Sulphonamides, Karl K. Kershner
Masters Theses
"The formation of sulphonamide derivatives is often of distinct importance. These substances are easily purified and give sharp mepting points which make them of value for identification phases of research work. Also they are of value commercially as in the production of saccharin and other similar compounds. The purpose of this investigation is to secure information on the comparative production and yield of sulphonamides, and intermediate products, formed from their respective ring hydrocarbons, as benzene and toluene. careful melting point are taken on purified products and solubility curves developed for different solvents. The latter give an interesting basis for comparison"--Introduction, …
Metallurgical Results From Black Copper Smelting, Preston King Horner
Metallurgical Results From Black Copper Smelting, Preston King Horner
Professional Degree Theses
No abstract provided.
The Roasting Of Zinc Ores In The Manufacture Of Sulphuric Acid By The Contact Process, Clarence Eugene Peterson
The Roasting Of Zinc Ores In The Manufacture Of Sulphuric Acid By The Contact Process, Clarence Eugene Peterson
Professional Degree Theses
"The unprecedented demand for sulphuric acid of the higher strengths (98% and higher) in the manufacture of explosives, has stimulated the zinc smelters to increased efforts in the recovery of their Roaster gases in the form of Sulphuric Acid. The Lead-chamber process is unsuitable, however, in making "strong" acid and the smelters naturally turned to the contact mass or catalytic processes. In the roasting of zinc ores practically all of the sulphur is removed as sulphur dioxide, the disagreeable odor and unmistakable injury to surrounding localities, of which, first led to the adoption of sulphuric acid plants by most zinc …
On The Microscopic Determination Of Cadmium In Metallic Zinc, James Presley Gill
On The Microscopic Determination Of Cadmium In Metallic Zinc, James Presley Gill
Professional Degree Theses
"A quick and accurate determination of Cadmium in Metallic Zinc by all ordinary chemical methods now in use, so far as the writer has been able to ascertain is at best only approximate. However, longer methods and very delicate ones for determining Cadmium are in use that are very accurate, but these methods are so long and so delicate that very few commercial laboratories care to use them. Now, it has been known for some time that Zinc and Cadmium do not form an alloy which when in the solid exist either as a solution or a compound. They do …
Graphics And Its Application To The Progress And Cost Analyses Of A House Building Construction Company, Frank Lewis Leonard Wilson
Graphics And Its Application To The Progress And Cost Analyses Of A House Building Construction Company, Frank Lewis Leonard Wilson
Masters Theses
"In the graphical analyses of Stresses in Framed Structures, we study, by means of diagrams, the stability or equilibrium of structures and the relation between the external forces and the stresses created in the members of the frame. The principle involved is that we may represent any force both as to direction and intensity by a straight line, by considering the direction of the line to be identical with that of the force and adjusting its length according to any arbitrary unit adopted for the forces under consideration. By this means we can solve the stresses in framed structures with …
The Occurrence Of Oil And Gas In Osage County, Oklahoma, Donald Hewson Radcliffe
The Occurrence Of Oil And Gas In Osage County, Oklahoma, Donald Hewson Radcliffe
Professional Degree Theses
"Osage, the largest county in Oklahoma, is situated a little to the east of the north central part of the state. It consists of an area of approximately 2,350 square miles, or about a million and a half acres, extending from T. 20 N. to T. 29 N. and from R. 2 E. to R. 12 E. inclusive. As this country lies between some of the best oil producing areas of the State, as it is definitely known to be folded, and as the folds tested have proven that the chances of obtaining production on favorable "structure" in the Osage …
Electrolysis Of Neutral Solutions Of Znso₄, Knud Fabricius Hansen
Electrolysis Of Neutral Solutions Of Znso₄, Knud Fabricius Hansen
Professional Degree Theses
"The purpose of the following experiments was to obtain informations concerning the character of the deposits, the efficiencey [sic], et al. in the electrolysis of neutral solutions of ZnSo₄"--Purpose, page 1.
Determination Of Critical Point Of Concentrating Tables On Arizona Copper Ore, J. C. Finagin Jr., W. C. Hogoboom
Determination Of Critical Point Of Concentrating Tables On Arizona Copper Ore, J. C. Finagin Jr., W. C. Hogoboom
Professional Degree Theses
"In the concentration of an ore by means of concentrating tables, there is a critical point in sizing beyond which the valuable minerals can not be recovered. Theoretically, the lighter gangue is washed over the side of' the table and the heavier mineral, regardless of size, is recoverable at the end, these concentrates being graded from coarse to fine sizes up the slope of the table. In practice, however, the finer sizes of concentrates are found mixed with the middlings and tailings, as indicated by the arrows on the diagram of the concentrating table shown below. The problem is to …
Measurement Of Air Under High Pressure By Orifice Method, George E. Mellow
Measurement Of Air Under High Pressure By Orifice Method, George E. Mellow
Bachelors Theses
"The measuring of compressed air, under high pressures, by means of observing the drop in pressure on passing thru an orifice, is in a new field of endeavor. The necessity of measuring compressed air, in order to handle it economically, is obvious. Hence, the importance of a simple device by which this may be done. A device, which may be duplicated at any time, at any place, with very little expense, and ordinary materials"--Introduction, page iii.
Some Tests On The Grinding Of Cement Clinker With A Hardinge Conical Ball Mill, Gilbert F. Metz
Some Tests On The Grinding Of Cement Clinker With A Hardinge Conical Ball Mill, Gilbert F. Metz
Professional Degree Theses
"The Hardinge Conical Mill is the invention of Mr. H.W. Hardinge and has been fully patented by him. It has been used successfully in the grinding of ores, limestone, phosphate rock, feldspar and talc. The purpose of the tests in this thesis was to determine the worth and adaptability of the Conical Mill for the preliminary grinding of cement clinker and to determine the relative merits of this type of grinder as compared to the roll type of grinder. The tests herein were performed under the direction of the writer assisted personally and through correspondence by Mr. H.W. Hardinge of …
Chemical Control Work In The N. K. Fairbanks Factories, John Whittlesey Bodman
Chemical Control Work In The N. K. Fairbanks Factories, John Whittlesey Bodman
Professional Degree Theses
"We propose to discuss in this thesis the organization of the N. K. Fairbank Company, particularly with reference to the duties of the Chemical Division, Operating Department in this organization. From a broad viewpoint, we believe that the particular organization by with the N. K. Fairbank Company secures application of its chemical ability to manufacturing operations as well as to special problems, is characteristic of a widespread movement taking place for recognition of the chemical engineer in industry. This is particularly true in those industries where manufacturing operations are based primarily upon practical applications of chemical principles"--Abstract, page 1.
Descriptive Study Of The Petroleum Refinery At MinatitláN, GermáN GarcíA Lozano
Descriptive Study Of The Petroleum Refinery At MinatitláN, GermáN GarcíA Lozano
Professional Degree Theses
"In order to reduce as much as possible the cost of transportation of the crude oil to the refinery, the city of Minatitlán of Minatitlán County in the State of Veracruz was chosen as the most proper place for establishing the refinery it being in the center of the only oil fields which at that time possessed the "Eagle Mexican Petroleum Co."--page 1.
The Goltra Process Of Concentrating Iron Ores As Developed At Waukon, Iowa, Ernest Wander
The Goltra Process Of Concentrating Iron Ores As Developed At Waukon, Iowa, Ernest Wander
Professional Degree Theses
"The more or less impure iron bearing mineral occurs mixed with a very tenacious clay, in which are also found chert, cretaceous quartz pebbles, pockets of sand, masses of pebbles and sand cemented by hydrous iron oxide, (which in some cases partly replaces the silica) and several varieties of fossils, such as crinoids etc. The impurities mentioned are often an integral part of the ore particles, and are present in varying quantities thruout [sic] the deposit. But, besides the foreign matter which the eye can discern, the apparently pure mineral contains a varying percentage of silica and alumina, (as well …
Some Typical Bridges For Logging Railroad Construction, Frederick Hauenstein
Some Typical Bridges For Logging Railroad Construction, Frederick Hauenstein
Professional Degree Theses
"In some of the pine regions of the Ozark Mountains, a considerable portion of the country is rolling and rough, comprising a succession of hills and hollows. The most efficient method of logging such a tract is obtained by locating the logging road so as to secure a down grade haul for the logs, with consequent up grade return for the empty cars. This necessitates locating the main line of the railroad along the principal creek, and then laying spurs up the different tributary creeks as they are met. Such a procedure requires much crossing and re-crossing of creeks and …
Concentration Of A Joplin Slime By Flotation, Earl Joseph Weimer, Walter Harry Freudenberg
Concentration Of A Joplin Slime By Flotation, Earl Joseph Weimer, Walter Harry Freudenberg
Bachelors Theses
"Concentration of the Joplin slimes by means of flotation is a subject receiving considerable attention at the present time, due to high price of zinc. These slimes are the accumulation of the finer particles of the ore during the milling process, and their zinc content is well worth considering. The practice in the past has been to sluice these slimes into the tailing pond, as no economical method of saving the zinc had been employed. The object of our experiment was to economically extract from these slimes by flotation, a product of sufficient zinc content to be of commercial value"--Introduction, …