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Radiation Losses In Metallurgical Furnaces, Frank Richard Loveridge

Bachelors Theses

"The conduction and radiation of heat are of great importance in metallurgy. Metallurgical operations require, in the great majority of cases, temperatures above those of normal atmospheric conditions. Loss of heat is loss of dollars. Furnaces of all kinds allow to pass their walls a greater or less amount of heat, i.e. heat is lost by conduction and by radiation. This heat is often spoken of as radiation loss. It is due to the heat being conducted from the inside to the outside of the furnace. The materials of construction, and manner of building the furnace has much to do …

A Comparison Of The Solvents Used In The Hydrometallurgy Of Silver, Simon Jochamowitz, Enrique Cavazos

Bachelors Theses

"Potassium cyanide solutions, hyposulphite of soda solutions, and a mixture called the Russell solution, are the solvents most used to win silver from its ores. We are not the first to attempt comparisons of the solvent powers of the different solutions named. It is difficult, at least we have found it difficult, to find tabulated, a comparison of the various solvents from the points of view of speed of action, of consumption of reagents, of suitability of one or another to a given type of ore"--page 1.

The Volatilization And Absorption Of Silver Chloride, Edgar Joseph Wolf, Victoriano Elicano

Bachelors Theses

"The purpose of this thesis was to study the relation of the loss of silver chloride to such variables as the temperature, as the type of gangue, as the method of carrying on the roast; to determine what becomes of the silver lost and to attempt to recover it. In our work we consider something seemingly overlooked by many, if not all of the workers; namely, that there is a great loss of silver chloride due to absorption, as well as to volatilization. Volatilization has been the hobby of most of the experimeters. We hope to show as a part …

A Study Of The Losses Of Gold During Cupellation In The Presence Of Tellurium, George Albert Easley, Carl Winthrop Keniston

Bachelors Theses

"It is generally accepted that the presence, in the lead button, of a small amount of tellurium causes, during cupellation, a loss of gold. Little, however, is known as to the loss, when tellurium is present, due to variation in the temperature of cupellation...Our work was carried on with the intention of determining the loss of gold, due to temperature in the presence of known amount of tellurium and to compare this loss with that caused by the temperature alone. Has temperature the same, a greater, or a less effect on the loss of gold during cupellation when tellurium is …

The Microstructure Of Drill Steel, Arthur L. Pollard

Bachelors Theses

"The object of this thesis was to determine the microstructure of the various grades of steel used in rock drilling and to obtain if possible some general relation between the structure, composition, and hardening temperature. About 35 of the best known grades of tool steel having a carbon content of about 1 per cent or containing an equivalent hardening agent"--page 2.

Minerals And Their Environment Of Formation, Deforrest Don

Bachelors Theses

"The history of mineralogy began with the development of mining and the use of certain minerals as useful products, such as lime, pigments and precious stones. In order to know how to distinguish these minerals when found and where they were likely to found, it was necessary to study the nature, properties and the modes of occurrence. In order to determine all these properties, it was necessary to classify and compare them with the purpose of ascertaining how they resemble each other, and how they differ"--page 1.

Investigation Of Hindered Settling Ratio Of Galena, Sphalerite And Pyrite As Compared To Quartz In Air, Ralph Wilheim Watson, William Danels Clarke

Bachelors Theses

"The object of this thesis is to determine the hindered settling ratios in air, of Galena, of Pyrite, and of Sphalerite as compared to Quartz"--Problem, page 1.

Steinmesch Hindered Settling Classifier, Jesse Herman Steinmesch

Professional Degree Theses

"The construction of the single classifier is well shown in the attached blueprint.

On the print it will be noted that the classifier is divided into two general parts, an upper hopper-shaped chamber GFED, and a lower portion consisting of the flat tube C, encased by the chamber A. Between upper and lower portions is the gasket L which serves to make a close joint between them, and also by forcing C downward, to make tight joints between A and C at both top and bottom. L is made of 1 ½” board. At D is a plate of #12 …

1909 Matthew B. Sellers Diary, Matthew B. Sellers

Matthew B. Sellers Dairies

1909 diary of Matthew B. Sellers.

Test Of Any Internal Combustion Engine, Frank B. Holmes, James H. Turner

Undergraduate Theses and Senior Projects

No abstract provided.

General Method Of Procedure In The Working Out Of The Uncompahgre Valley Project, Colorado, Leo J. Foster

Masters Theses

"On the 17th of June 1902, Congress passed an act which may have appeared of little moment at that time, but which is not attracting the attention of the people of the United States. It is known on the Statute Books as the Reclamation Act and its purpose is to provide a Reclamation Fund, the said fund being used only to examine and construct Irrigation Works in certain Western States and Territories. This Act provides that the proceeds of the sale of public lands in thirteen States and three Territories, known as the Public Land States, less a deduction of …

The History And The Development Of The Cyanide Industry, Horace T. Mann

Masters Theses

"The accompanying thesis is a compilation from articles published n the magazines and from books. Where no references are given, the statements are the impressions gained from reading several articles on the same subject. None of the work originated with myself"--page [ii].

Copper Smelting In A Rotary Furnace With Pulverized Charcoal, Elmer Cooper Heck

Professional Degree Theses

"This process is in use at the Verde Grande Copper Company's plant, located thirty-two miles north west of Hermosillo in the state of Sonora, Republic of Mexico, and is yet experimental"--page 1.

Square Set System Of Timbering As Employed By The Shannon Copper Co., Ray Eugene Hoffman

Professional Degree Theses

"The properties of The Shannon Copper Co., consisting of mine and smelter, are located in the Southeastern part of Arizona in what is known as the Clifton-Morenci District. The smelter is located at Clifton and the mine at Metcalf, eight miles distant on an iron capped mountain known as Serro Preito.

From a geological standpoint the ore deposits of the Clifton-Morenci District are a freak. There are no fissure veins of any consequence in the district; all the large deposits are found in bodies, the ore usually occurring in a soft porphyry.

Underlying the iron capping on the Shannon property …

Report Of La Mina Boquillas Del Carmen, Of Coahuila, Mexico, James Asa Gregory

Professional Degree Theses

"The several denouncements embracing the group known as the Boquillas Del Carmen Mines are located in the western foothills of the Boquillas del Carmen range, and about eight miles in an air line, east of the small town of Boquillas, just across the Rio Grande River and in the state of Coahuila, Mexico"--page 1.

Tests Of Efficiency Of The Rolla Power Plant, Ward Barr Mix, Edwin Bryant Thornhill, George Fred Kellogg, Clyde Rex Wood

Bachelors Theses

"The object of the test was to determine the efficiency of the separate units and of the plant as a whole under actual normal working conditions"--Object, page 1.

Effect Of Arsenic On Assay For Gold And Silver, Rosco Conkling Ham, Frederick Arnold Moore

Bachelors Theses

"In presenting the within thesis, it is not claimed by the authors that the experiments have been, by any means, exhaustive of the subject. Neither is any claim made to original research work other than a series of simple experiments with a view to determining, if possible, some of the more important effects of Arsenic upon a fire assay for gold and silver as met with in the ordinary assay laboratory. To make a work complete and exhaustive on such a subject will require much more time and more complete apparatus than was available in the experiments covered by this …

Design Of A Re-Inforced Arch Over Frisco Railroad On Tenth Street, Rolla, Missouri, Don Morgan Neer

Bachelors Theses

"Location. This bridge shall be located so that its center line will coincide with the center line of Tenth Street, so that the two (2) inside faces of the abutments will be perpendicular to the center line of Tenth Street and will be fifty-one (51) feet from the center line of the main track of the Frisco Railroad. General Description. This bridge will be built of concrete with steel rod re-inforcement, as shown on the plan. It will be one hundred two (102) feet between the faces of the abutments. The abutments shall be carried down into the rock ledge …

A Report On The Shattuck And Arizona Mine At Bisbee, Arizona, John Joseph Sanford

Bachelors Theses

"The Shattuck and Arizona Mine is about one-half mile southwest of the town of Bisbee and five-sixteenths of a mile west of the Holbrook shaft of the Copper Queen property. The mine is on the east slope of Escanbrosa Ridge and a quarter of a mile up Uncle Sam Gulch. It adjoins the Uncle Sam Mine on the north and the Cuprite, a Copper Queen property, on the east"--Location, page 1.

Test Made On The Missouri School Of Mines Power Plant, Leland R. Walker, George Hewitt Boyer, Alfred Leo Nye

Bachelors Theses

"The primary object of this thesis was to obtain the total efficiency of the Missouri School of Mines Power Plant"--page 1.

Pot Roasting Of Lead Ores, Ralph Robert Benedict, Edward Phillip Barrett, Frank William Harper

Bachelors Theses

"In this thesis for a starting point, we attempted a roast of straight galena with no diluent. As anticipated the results were nil. We next attempted the roast with a mixture of galena and silica, and obtained fair results. Our next experiment was to use limestone with the galena. Because of the large percentage of limestone present the results were not satisfactory. Next pyrites and limestone were used with the galena, and excellent results were obtained. We made another run, using pyrites and limestone, but increasing the per-centage of galena by 25%. This run was also very successful. From these …

Development Of Power On Little Piney River, James Duncan Fowler, Frank Leroy Flynt

Bachelors Theses

"Little Piney River has its source in the southern part of Phelps County, Missouri. Its general direction is north until its junction with Beaver Creek. Then it flows nearly due west and empties into the Gasconade River near Arlington, Mo. It drains an area of approximately two hundred square miles. The slopes of its drainage area being very steep, it is subject to large and sudden rises. As it is largely a spring fed stream its minimum flow is not far below its normal stage. The stream abounds in rapids with from a few inches to a foot or more …

Mining And Milling Of A Low Grade Copper Ore, Richard Edward Armstrong, Horace Asahel Johnson

Bachelors Theses

No abstract provided.

Effects Of Copper On The Cupellation Of Silver, Charles A. Baker, Miles Sedivy

Bachelors Theses

"The object of this work is to find the effect of copper in the cupellation of silver. Our method of attack was: 1st. To find the effect of varying the amount of copper with constant lead and constant temperature. 2nd. Effect in cupellation of varying the temperature and the lead in the presence of a constant amount of copper. 3rd. To determine the rate at which the copper is removed during cupellation"--page 1.

The Development Of A Lead, Zinc Prospect, Felix Anthony Lyneman

Bachelors Theses

"The writer's object in this thesis is to devise a method of mining the ores from a well-known Chitwood Prospect, Jasper Co., Mo., so that the same will pay dividends"--Object, page 1.

1908 Matthew B. Sellers Diary, Matthew B. Sellers

Matthew B. Sellers Dairies

1908 diary of Matthew B. Sellers.

Ordinary Meeting, The Panama Canal, The Lock Canal Type And The Straits Of Panama Type, Kentucky Library Research Collections

Research Collections

Article from the Journal of the Society of Arts by M. Philippe Bunauvarilla, Bunau-Varilla helped turn the vote toward choosing the Panama site; he became minister plenipotentiary to the United States. He discusses success and failures in building of the canal.

Process Of Treating Slimes In Ore Reduction, Gustavus A. Duncan

Professional Degree Theses

No abstract provided.

The Composition And Analysis Of Zinc-Lead Pigment, Evans Walker Buskett

Professional Degree Theses

"Zinc is present as oxide and sulphate. There are also probably zinc and lead sulphites. It has been suggested that there may be carbonates in this pigment, but this is not probable as the high temperature of the furnace, the complete combustion of the fuel to CO2 and the large excess of SO2 gas in the bagroom would tend to prevent their formation. There is also a chemical combination between the zinc oxide and the lead oxide which is probably a zinc plumbate. Some light can be thrown on the subject by the following experiments:"--page 1.

Design, Specifications And Cost Estimate Of Two Hundred Ton Stamp Mill And Cyanide Plant For Treatment Of Gold Ore, John Payne Sebree, William Peter Hatch

Bachelors Theses

"The object of this thesis is the designing and a mill, writing specifications for same, and furnishing complete cost of entire plant to treat 200 tons of gold ore"--page ii.