Engineering Commons^™

A Study Of The Losses Occurring In The Milling And Smelting Of Missouri-Kansas Zinc Ores, Horace T. Mann

Professional Degree Theses

"At the present time the greater portion of the zinc mined in the Joplin District, is taken from what is known as the sheet-ground. What percentage of the zinc bearing rock is extracted or what percentage is left in the ground when the mine is abandoned, which owing to caving and other causes can not be recovered at some future time, is not known. It is to be hoped that the State Geological Survey will in the near future be able to take up the investigation of this subject. Until they do it will be impossible to make a reliable …

Report Of Herald Mine, Joplin, Missouri, Clay Gregory

Bachelors Theses

No abstract provided.

The Effects Of Co₂, So₂, And Temperatures On Blende Roasting, Monroe Farrar

Bachelors Theses

"This work deals with the effect which different temperatures and different percentages of CO₂ and SO₂ have on the speed of roasting of zinc sulphide. I selected sphalerite from the Joplin district"--Page 1.

Nichrome As A Rheostat Resistance, George C. Vogt

Bachelors Theses

"Nichrome wire is a high resistance alloy, and is not appreciably effected in its resistance by changes of temperature to which it may be subjected in practice. This was shown by the low temperature coefficient obtained. Nichrome does not deteriorate by heating, as shown by torsion-tests after current has been passed through wire. German-Silver however, becomes brittle. Nichrome in a moist atmosphere corrodes rapidly, but in a relatively dry atmosphere, and heated red hot, no signs of oxidation or corrosion could be seen. By all results obtained as to strength, resistance, etc., Nichrome is superior to German-Silver as a resistance …

Specifications And Bill Of Material For Roaster In Ore Dressing Laboratory Of Missouri School Of Mines, John Dee Harlan

Bachelors Theses

"POSITION OF ROASTER. In the North West corner of the East wing of the Metallurgy Building. The space allowed is nineteen feet (19ft) long by fifteen feet (15ft) wide. The floor is of concrete. The walls are of brick. OBJECT OF ROASTER. to give either an Oxidizing or a Reducing Roast; to partially roast the ore or to give it a dead roast"--SPECIFICATIONS, page 1.

A Study Of The Electrical Resistance Of Coke, Gas-Carbon, And Kryptol Under Varying Conditions, Benton Franklin Murphy, Reuben Conrad Thompson

Bachelors Theses

"This thesis was undertaken to make a study of the resistance of coke, gas-carbon, and kryptol when used as resistors in the electric resistance furnace, which daily is becoming of increasing industrial importance. It would appear at first sight that the calculation and design of an electric resistance furnace would be an extremely simple problem, since the whole effect is the change of electrical energy into heat according to Joule's Law; but this is by no means the case, as the resistance of the resistor may change enormously during the run of the furnace. The great difficulty met with is …

Investigation Of Hindered-Settling Ratio Of Galena And Quartz In Air, John Sloan Stewart, Ralph Daniel Killian

Bachelors Theses

"The object of this Thesis is to determine the hindred sic -settling ratio in air of Galena and Quartz, and to verify if possible the result of the work done in 1909 by W. D. Clark and R. W. Watson"--Problem, page 1.

Transportation Of Chert In Launders, Louis Joseph Porri, John Lyle Pickering

Bachelors Theses

"Water is often carried from place to place in artificial channels, such as troughs, aqueducts, ditches and canals. A launder is, specifically speaking, a trough, and it is with this that this article will treat. It is the purpose of this investigation to discover, if possible, first, the maximum carrying power of water when transporting chert; second, to find the relation existing between the velocities of different sized chert"--Introduction, page 1.

Some Geology On The Weingarten Quadrangle, Missouri, John Whittlesey Bodman

Bachelors Theses

"The work in this report covers about 90 square miles situated in the east and middle portion of Ste. Genevieve County, Missouri, between townships 35-37 north and ranges 7-9 east. It is termed the Weingarten Quadrangle by the State Geological Survey...The body of the thesis is detailed areal mapping. All formations and structural features are put on a topographic map with a scale of 1/62,500, contour interval 20 ft., datum mean sea level"--page 1.

The Losses Of Gold During Cupellation Using Various Makes Of Cupels, Benjamin Harrison Dosenbach

Bachelors Theses

"There are on the market various cupels. Many of the assay-supply firms sell a "manufactured" cupel, presumably made of bone-ash. The great majority of all cupels used, are made of bone-ash in the assay office itself. The object of this work is to compare the losses of gold when the various patented, the various manufactured and the ordinary hand made cupels are used"--page 1.

A Study Of The Efficiency Of Discharge Of Classifier Spigots, Harmon Edwin Minor, James Bunten

Bachelors Theses

"A knowledge of the amounts of water and sand that will be discharged by classifier spigots under various conditions is of considerable importance in the design of classifiers. Suppose it is desired to discharge fifty tons of sand with an average diameter of 2 m.m. through a spigot orifice, the sand being mixed with 100 tons of water and the entire amount of the mixture being discharged in ten hours from the spigot, which is submerged to a depth of two feet under the water. How large a spigot is required? Problems such as this are by no means uncommon. …

Notes On The Precipitation Of Gold From Cyanide Solution, Charles Adrian Burdick, Harry Wade Connelly

Bachelors Theses

"This work was to determine the Potassium Cyanide and the Zinc consumed in the precipitation of Gold from cyanide solutions by zinc dust"--page 1.

The Concentration Of A Pyrolusite Ore, Frank O. Blake, Van Hoose Smith

Bachelors Theses

"This is the history of an attempt to produce from a pyrolusite ore, a material sufficiently rich in manganese to be of value in the various industries such as the making of speigeleisen and ferro-manganese, the glass manufacturing, and the chemical industries. The greater part of the manganese used in the United States comes from Brazil, India and Russia. Our American ores are, in general, low grade and requires various preliminary concentration to fit them for use. Although we possess in this country a great deal of manganese ore, which could be put into suitable condition for the market, there …

The Determination Of Friction-Coefficients Of Water In Small Iron Pipes, O. W. Holmes, Ernest Wander

Bachelors Theses

"This thesis was undertaken to determine accurately the coefficients of friction of water, flowing at varying velocities in small iron pipes and elbows. It was the intention to obtain the condition of pipes and elbows similar to that met with in general practice"--Introduction, page 1.

Modern Cyanide Practice, Harvey Edson Smith

Bachelors Theses

"It is noticable sic that about all of the recent improvements in cyanide practise sic have been along mechanical rather than chemical lines. the use of oxidizers such as air, ozone, sodium peroxide, etc., the use of the salts of lead, and even the addition of a coating of lead to the zinc shavings in the extractor boxes were all recommended when the process was first advocated but sometimes for different reasons. In the early days of the process the addition of hypochlorites, alkaline persulphates, and the use of mercuric cyanide was also investigated but has not proven satisfactory owing …

Some Ore Deposits In Maine And The Milan Mine, New Hampshire, William H. Emmons

Maine Collection

Some Ore Deposits in Maine and The Milan Mine, New Hampshire

by William H. Emmons

Department of the Interior, United States Geological Survey - Bulletin 432

Washington, D.C. (1910).

Contents: Introduction / Geology / Ore Deposits / Descriptions of Mines / Mines of Hancock County / Mines of Washington County / Mines in Somerset and Oxford Counties / Milan Mine, New Hampshire / Index

The Design Of A Mill To Treat A Certain Gold-Silver Ore By Cyanidation, Emilio Diaz, Robert William Mackey

Bachelors Theses

"The problem under consideration is the design of a hundred-ton mill for treating silver ores by cyanidation... The Sulphur is partly combined as Sulphide and partly as the Iron Sulphates, FeSO₄ and Fe₂(SO₄)₃. To determine the best method of procedure, preliminary tests were run on lots of 100 pounds each, this being crushed in a sampling grinder and classified into sand a slime"--Introduction, page 1.

Abstract Of The History Of The Metallurgy Of Iron And The Development Of Iron Blast Furnaces, Norman L. Ohnsorg

Bachelors Theses

No abstract provided.

Design Of 300 Ton Cyanide Tailings Plant And Operation Of Same, Lamar Horacio Hunt

Masters Theses

"The plant in question was designed by the writer, to treat the immense tailings dumps of the Sacramento Gold Mining company at Mercur, Utah, consisting of one-half million tons of old cyanide tailings. The ore is porous and friable, causing much slime, which is impermeable to cyanide solution, by the old leaching system. Slime has always been troublesome, and the above plant was designed to overcome this difficulty"--page [1].

A Method Of Obtaining Lead Concentrates From The Slimes Of The St. Joseph Lead Mill, Lewis Alfred Delano

Professional Degree Theses

"In the concentrating of lead ores, the water used in the mills carries the tailings from the jigs and tables to chatt tanks. Here the chatts and sands settle while the greater part of the water overflows and enters a sluice or slimes branch to the settling ponds. This overflow water carries with it a great deal of float lead. It is impossible to catch this lead in the mill on moving machinery without using too much power and mill space to effect a profitable saving. Ninety percent of this float will pass through a 140 mesh sieve. there will …

Economic Investigation Of The Lignites Of The Dickinson, N.D. Area, Glenn Beckley Morgan

Professional Degree Theses

No abstract provided.

The Relation Of The Composition Of A Mineral To Its Properties, Edwin Phelps Murray

Professional Degree Theses

"The attempt has been made to bring together and to classify the properties of minerals and to show that there is some simple qualitative relation between their composition and physical properties, or in other words, to show that minerals containing different percentages of a certain element will all have similar properties dependent upon the proportion of that element. Further investigation of this subject would be in determining the modifying influence of crystal form"--page 1.

Design And Details Of Elevated Steel Tank, William A. Baueris

Bachelors Theses

"An effort has been made in this work to furnish complete plans and specifications for a steel structure which could replace the concrete reservoir on natural elevation north of Rolla, attention being given to capacity and relative elevations. A comparison of these two structures regarding relative advantages and disadvantages is herein given, with the intention of providing some foundation as a source of choice between these two classes of structures"--page 2.

The Construction Of The United States Macadam Road At Fort Scott, Kansas, William Mcelroy

Bachelors Theses

No abstract provided.

A Study Of The Settlement Of Slimes, William Simpson Hall, James Crawford Compton

Bachelors Theses

"The purpose of this thesis, as originally planned, was to determine the effect produced by certain substances called electrolytes upon the mill product known as "slimes". The subject presented an ever increasing number of new problems as it progressed and some work along the line of several of these branches is embodied in the following pages. Reports of investigation and behavior of slimes when treated for quick settlement are few and unsatisfactory. Our results may prove nothing already unknown, but the fact that so little data is easily accesible sic has been the motive for this thesis"--Preface, page 1.

Timbering In The Warren District, Cochise Co., Arizona, Fred Tete Boyer

Bachelors Theses

No abstract provided.

Geology Along The St. Louis And San Francisco Railroad From Rolla To Newburg, Victor H. Hughes

Bachelors Theses

"The area, the geology of which, constitutes the subject of this Thesis, lies between the towns of Rolla and Newburgh sic , in Phelps Co., Missouri, and is contiguous to the St. Louis & San Francisco Railroad for its entire distance"--Text of Thesis, page 1.

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 …