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Articles 21481 - 21510 of 21777
Full-Text Articles in Engineering
The Determination Of Oils In Limestone, Claude Calvin Cushwa
The Determination Of Oils In Limestone, Claude Calvin Cushwa
Bachelors Theses
"The purpose of this work has been to establish the occurrence or the non-occurrence of petroleum in certain limestones. The results of this work, if oil were proved to exist, would have a direct bearing on the theories of the origin of oils"--Introduction, page 1.
Gaging Of The Gasconade River, Lawrence Collins, Sidney R. Hatch
Gaging Of The Gasconade River, Lawrence Collins, Sidney R. Hatch
Bachelors Theses
“The work of establishing a gaging station was begun January 31st, 1914. Due to cold weather and lack of knowledge of the river it was very difficult to locate a suitable gaging station. The advantages offered by the bridge for putting in a gaging station on the lower side of the bridge was considered and tried”—Selection of a Gaging Station, page 3.
A Study Of The Economic Design Of Short Span Girder Type Concrete-Steel Highway Bridges, Enoch Ray Needles
A Study Of The Economic Design Of Short Span Girder Type Concrete-Steel Highway Bridges, Enoch Ray Needles
Bachelors Theses
"The general principles underlying the design of concrete-steel structures are quite well known. Concrete itself is a structural material which is sightly, permanent, very strong in compression, thoroughly reliable when made honestly, almost fool-proof when once allowed to "set" properly, adaptable to an almost unlimited number of uses, practically fire-proof as well as water-proof, and in addition its cost is always very reasonable. The great objection to concrete is its lack of tensile strength, and likewise its lack of elasticity and toughness. Thus it is a fortunate circumstance that which is one of the least expensive of metals, and which …
Determination Of Critical Point Of Concentrating Tables On Flat River Ore, J. C. Finagin Jr., W. C. Hogoboom
Determination Of Critical Point Of Concentrating Tables On Flat River Ore, J. C. Finagin Jr., W. C. Hogoboom
Bachelors Theses
"In concentrating any ore on tables there is, theoretically, a critical point in sizing, beyond which it can not be expected to recover the valuable minerals; that is, valuable mineral finer than a certain size will go with the gangue and be lost. for instance, in the diagram of the Wilfley Table shown, the concentrates grade from coarse to fine as indicated, but instead of grading on down into very fine sizes farther up the table these finer sizes are found mixed with the middlings, tailings and slimes as indicated by the arrows. The problem is to determine the critical …
An Investigation Of The Leaching Of Copper Tailings By Means Of Potassium Cyanide, Precipitation Of The Dissolved Copper By Means Of Aluminum, With Consequent Regeneration Of The Cyanide Consumed, Thaddeus Reamy Goldsborough
An Investigation Of The Leaching Of Copper Tailings By Means Of Potassium Cyanide, Precipitation Of The Dissolved Copper By Means Of Aluminum, With Consequent Regeneration Of The Cyanide Consumed, Thaddeus Reamy Goldsborough
Bachelors Theses
"One of the principal disadvantages attending the use of most of the usual solvents for Copper, such as Sulphuric Acid, Ferrous Chloride, etc., in the treatment of tailings products, is that the solvent is not regenerated upon precipitation by iron, and in fact is destroyed by the precipitant. This of course involves a dead loss of a definite portion of acid or other reagent, proportional to the amount of Copper dissolved. A solvent which would be regenerated upon precipitation is eminently desirable. At the same time, a carbonate gangue, or one of such a nature which will react with the …
The Efficiency Of The Kerruish Smoke Consumer And Coal Economizer, Arthur F. Truex, Gilbert F. Metz
The Efficiency Of The Kerruish Smoke Consumer And Coal Economizer, Arthur F. Truex, Gilbert F. Metz
Bachelors Theses
"The Kerruish Smoke consumer is the invention of Mr. H. B. Kerruish and is patented in the United States under the Patent Number 1,046,196. The tests herein shown were made for the purpose of determining the practical value of the device as a smoke consumer, and as a fuel economizer. Many forms of these devices have been put on the market, some using a steam spray, and others using air in a manner similar to the Kerruish apparatus"--Scope of the Thesis, page 2.
Relation Of Carbon Dioxide In Flue Gases To The Efficiency Of A Boiler, Richard A. Wagstaff, Philip A. Moore, William Ehlers, James Hopkins
Relation Of Carbon Dioxide In Flue Gases To The Efficiency Of A Boiler, Richard A. Wagstaff, Philip A. Moore, William Ehlers, James Hopkins
Bachelors Theses
"This thesis was undertaken to demonstrate the practical utility of measuring the efficiency of a Heine Boiler, installed in the Power Plant at the Missouri School of Mines, by the amount of CO₂ in the flue gases. The tests were made on a new boiler which had recently been installed in the Power Plant. The boiler and setting being new, the tests should show a high percentage of CO₂ in the flue gases and a high evaporative efficiency by the boiler"--page 3.
Methods Of Mining And The Preparation Of Coal In The Belleville, Illinois District, Harry William Shaw
Methods Of Mining And The Preparation Of Coal In The Belleville, Illinois District, Harry William Shaw
Bachelors Theses
"The methods of mining and the preparation of coal for the market in the Belleville District represent the most modern and up-to-date methods in the state of Illinois. Mine No. 17 of the Consolidated Coal Company is the largest in the district and the methods used here are typical of the entire district"--page 6.
The Effect Of Insoluble Sulphates On The Volumetric Determination Of Lead, Mervin Joe Kelly, Ralph Knappenberger
The Effect Of Insoluble Sulphates On The Volumetric Determination Of Lead, Mervin Joe Kelly, Ralph Knappenberger
Bachelors Theses
"It has been pointed out that Alexander's Molybdate Method for lead gives inconsistently varying results when calcium is present in the ore...It was to clear up this apparent contradiction and to find the true effect of the presence of calcium on the titration in the molybdate method, that this investigation was started"--Introduction, page 1.
Test Of The Municipal Power Plant Of The City Of Rolla, Missouri, Dexter Eli Andrus, Leonard Stephen Copelin, Harry Hackett Nowlan
Test Of The Municipal Power Plant Of The City Of Rolla, Missouri, Dexter Eli Andrus, Leonard Stephen Copelin, Harry Hackett Nowlan
Bachelors Theses
"The object of the test was to determine the efficiency of the boilers and engines under the actual conditions of every day operation"--Object of the Test, page 3.
A Series Of Tests On The Condensation Of Zinc Vapor To Metallic Zinc, Frank W. Cody, John W. Greene
A Series Of Tests On The Condensation Of Zinc Vapor To Metallic Zinc, Frank W. Cody, John W. Greene
Bachelors Theses
"The purpose of this Thesis is to try to show the effect which certain variables, which are always present in practice, have upon the condensation of Zinc Vapors to Metallic Zinc. That these variables can and do play an important part in the Zinc Smelting Industry can be shown from the fact that all of the zinc obtained at the present time is won from ores by reducing the oxide of zinc to metallic zinc by means of carbon. This operation necessarily takes place at a temperature above the boiling point of zinc. This means that the zinc immediately on …
Flotation Applied To Joplin Sludge, Thaddeus C. Wilson, Gustaf Axel Hellstrand
Flotation Applied To Joplin Sludge, Thaddeus C. Wilson, Gustaf Axel Hellstrand
Bachelors Theses
"The sludge (fine material) which daily is being sent to the tailing dump by the Joplin mills contains values in lead and zinc often in excess, as to percentage, of that of the crude ore. At present no attempt is being made to treat this It is at this point that it is proposed to introduce some flotation process to supplement the ordinary scheme of wet concentration. With this end in view we have conducted a series of experiments in the flotation of a Joplin sludge"--page 2-3.
The Effect Of The Presence Of Certain Base Metals On The Ability Of Amalgams To Catch Gold And Silver, Ray Gould Knickerbocker
The Effect Of The Presence Of Certain Base Metals On The Ability Of Amalgams To Catch Gold And Silver, Ray Gould Knickerbocker
Bachelors Theses
"As a general proposition, the conditions that favor successful amalgamation, and the factors that work against the success of the operation are reasonably well known. We know that if mercury contains certain impurities it will not pick up gold and silver efficiently. We know that if the gold and silver are not in proper condition the mercury will not work as it should. We also know what some of these impurities are, and have some idea as to what condition the gold and silver should be in, but the exact data on these conditions and their effects are lacking. The …
The Nature Of The Reactions Occurring In The Distillation Of Zinc From Its Ores And The Effect On The Speed Of These Reactions Due To Certain Variables, Robert Glenn Sickly, Charles Yancey Clayton
The Nature Of The Reactions Occurring In The Distillation Of Zinc From Its Ores And The Effect On The Speed Of These Reactions Due To Certain Variables, Robert Glenn Sickly, Charles Yancey Clayton
Bachelors Theses
"The reactions that occur in the metallurgy of zinc are in general well known as to the end results obtained. The zinc smelter desires a maximum recovery in a minimum time. There are certain factors that govern the fulfillment of this desire. The most important of these are TEMPERATURE, TIME, KIND OF REDUCTION MATERIAL, and THE NATURE OF THE ORE. There is much data available as to the temperatures at which these reactions go on and also there is obtainable some information as to the speed with which these reactions progress, particularly as to the length of time required for …
Cost Of Brick Pavement Constructed, William Mcelroy
Cost Of Brick Pavement Constructed, William Mcelroy
Professional Degree Theses
No abstract provided.
The Geology Of A Complexly Folded Area On Crooked Creek, In Crawford County, Missouril, Victor Harmon Hughes
The Geology Of A Complexly Folded Area On Crooked Creek, In Crawford County, Missouril, Victor Harmon Hughes
Professional Degree Theses
"The area comprising the subject of this thesis lies in the southwestern part of Crawford county, 2 1/2 miles east of Wesco and 12 miles south of Steelville, the county seat. It embraces all of sections 17 and 20 and portions of sections 7, 8, 16, 18, 19, and 21, township 36 north, range 4 west. The area is of special economic interest in that the formations exposed are the same as those occurring in the southeastern Disseminated Lead district of St. Francois, Madison, and Washington counties. Until discovered in 1910 by assistants of the Geological Survey, these formations were …
Plans And Specifications Of A Proposed Plant For Treating The High-Grade Silver Concentrate Of The Buffalo Mill By Tube-Mill Amalgamation, Hector George Sylvester Anderson
Plans And Specifications Of A Proposed Plant For Treating The High-Grade Silver Concentrate Of The Buffalo Mill By Tube-Mill Amalgamation, Hector George Sylvester Anderson
Professional Degree Theses
"Pursuant to your orders regarding the making of experimental tests on the high-grade silver concentrate of the Buffalo Mill, both on a small and a commercial scale, to determine the feasibility of extracting the silver contents and refining the same to 999-fine bullion I beg to submit the results of my work which has extended through the past two months. In the majority of the tests I have used a small Abbe-Engineering pebble-jars which will hold easily 1500 grams of ore and have checked the results obtained in these cases by similar results obtained by charging 1000 lbs. of ore …
A Study To Determine The Best Method Of Treatment For A Certain Gold-Silver Ore, Deane Dwight Harris, Duane Montgomery Kline
A Study To Determine The Best Method Of Treatment For A Certain Gold-Silver Ore, Deane Dwight Harris, Duane Montgomery Kline
Professional Degree Theses
"The purpose of this thesis is to find a suitable method for extracting the gold and the silver from an amalgamation tailing"--Purpose, page 1.
Geology Of Beaver Quadrangle, Robert Justice Paulette, James Lawton Keelyn
Geology Of Beaver Quadrangle, Robert Justice Paulette, James Lawton Keelyn
Bachelors Theses
No abstract provided.
Depreciation, Reginald Henry Brinton Butler
Depreciation, Reginald Henry Brinton Butler
Professional Degree Theses
"In estimating and stating working costs, we are often brought face to face with an important item of expense, for which no receipt is ever given and no invoice is ever rendered, viz: DEPRECIATION. For this reason perhaps the different ways of charging this liability are innumerable. No two people often have their minds cast into similar moulds and in the charging of this item, the human and personal factor enters very largely into consideration. People differ widely as to just what part of the capital must be laid aside to meet "changing conditions in trade" and what ought to …
The Measurement Of Compressed Air And Its Consumption In Rock Drills, Homer Kent Sherry, William Porri
The Measurement Of Compressed Air And Its Consumption In Rock Drills, Homer Kent Sherry, William Porri
Bachelors Theses
"The object of this thesis is to investigate the measurement of compressed air and to determine its consumption in rock drills. Our intention at first was to run more exhaustive tests on the drills, but due to the large amount of work necessary in rigging up the apparatus and computing results, we found it necessary to curtail our work to representative types of the hammer and the piston machines. We regret being unable to give more complete data in regard to the drills, but hope to point out fields for future work since, with the increased facilities now at hand, …
Crystallization Of Magmas, Norman L. Ohnsorg
Crystallization Of Magmas, Norman L. Ohnsorg
Bachelors Theses
"The object of this paper is to arrive at a better explanation of the segregation of magmatic solutions on cooling. In which magmas will be discussed from a chemical and metallurgical lien of reasoning, in showing why such minerals as apatite, magnetite, etc., having a comparatively low melting point, crystallize cut before feldspar and quartz, which have a comparatively high fusion point"--page 1.
Statement Of Mining Costs In The Butte District Three Months Ending June First 1910, Clifford Leroy Conway, George Sylvester Thomas, George Francis Condon
Statement Of Mining Costs In The Butte District Three Months Ending June First 1910, Clifford Leroy Conway, George Sylvester Thomas, George Francis Condon
Bachelors Theses
"The following cost data were compiled from the monthly cost sheets of the several mines, through a period of three months, April, May and June 1910. These figures were obtained from the cost sheets of the Anaconda Copper Mining Co. and are exact in every instance. The scale of wages and the cost of supplies which prevailed during the period that these figures were created were as follows"--page 3.
Testing Explosives, Frank James Flynn, Miller Edward Willmott
Testing Explosives, Frank James Flynn, Miller Edward Willmott
Bachelors Theses
"The following tests and experiments were carried on to determine: first, the utility of a certain well known method of making comparative tests of explosives and second; to show some of the conditions that influence the force and effect of a blast, such as the size of detonator, the use of tamping, the size of bore hole, and the size and number of free faces exposed to the blast"--Introduction, page 1.
Electrode Potential Of Galena, Robert Emmett Dye
Electrode Potential Of Galena, Robert Emmett Dye
Bachelors Theses
No abstract provided.
The Design Of A Water Supply Distributing System For The City Of St. James, Missouri, Arch W. Naylor, John Hurtgen
The Design Of A Water Supply Distributing System For The City Of St. James, Missouri, Arch W. Naylor, John Hurtgen
Bachelors Theses
"The design of the distributing system, being governed by the fire requirements, it is proposed to provide three 250-gallon fire streams under a hydrant pressure of 70 pounds per square inch for the business section, from Scioto St. to Bowman St and from Seymour St. to Meramec St with a maximum length of hose of six hundred feet; and two fire streams of a minimum total capacity of 425 gallons, each under a hydrant pressure of 72 pounds per square inch for the outlying district; the water to enter the system under a pressure of 100 pounds per square inch... …
A Comparison Of The Silver Losses Due To Cupellation Using Different Kinds Of Cupels, Martin Harmon Thornberry
A Comparison Of The Silver Losses Due To Cupellation Using Different Kinds Of Cupels, Martin Harmon Thornberry
Bachelors Theses
"In this Thesis my object has been to ascertain the silver losses in cupellation with different kinds of cupel material, thereby determining the effeciency sic of the materials in the four kinds of cupels used. When I began the work I though the losses would be about equal in all cupels, but was surprised to find such a great difference. I refer the reader to the curves to see what really happened"--page i.
Efficiency Of The Missouri School Of Mines Power Plant And Cost Of Operation, Cairy C. Conover, John Richardson Kenney, Louie Lincoln Coover
Efficiency Of The Missouri School Of Mines Power Plant And Cost Of Operation, Cairy C. Conover, John Richardson Kenney, Louie Lincoln Coover
Bachelors Theses
"These tests were made for the purpose of getting the efficiency of the electric power plant as it was being run and the cost of operating it. Tests were first made on the boilers separately. The load at the time of the test was too heavy for one boiler and too light for tow, part of the steam being used for heating the buildings and for the air-compressor. This made it so that no combined test of the boilers and generating couple could be made until the warm weather came and the laboratories using compressed air were closed, which was …
Efficiency Of The Missouri School Of Mines Power Plant, Eugene Harding Broughton, William Henry Elbelt
Efficiency Of The Missouri School Of Mines Power Plant, Eugene Harding Broughton, William Henry Elbelt
Bachelors Theses
"The test was made for the purpose of determining the efficiency of the power plant as it is being run"--page 3.
A Determination Of The Steam Consumption In The Engines Of The School Of Mines Power Plant By Means Of A Steam Flow-Meter, Harold Percy Ford, Scovill Edward Hollister
A Determination Of The Steam Consumption In The Engines Of The School Of Mines Power Plant By Means Of A Steam Flow-Meter, Harold Percy Ford, Scovill Edward Hollister
Bachelors Theses
No abstract provided.