Mining Engineering Commons^™

The Extraction Of Gold And Silver From Ore By The Cyanide Process, Isaac Peter Frazier, Claude Egan Jamison

Bachelors Theses

"The object of our investigation was to determine whether the ore could be treated by the Cyanide Process, and to find the conditions for maximum extraction. The following points were investigated:- 1. Best size for maximum extraction. 2. Best strength of solution. 3. Minimum length of time for maximum extraction. 4. Minimum amount of cyanide solution required"--page ii.

Geological Conditions And Genesis Of The Ore Deposits Of The Rush Creek District, Marion County, Arkansas, William Melvin Weigel

Bachelors Theses

No abstract provided.

The Determination Of The Fusing Point Of A Few Igneous And Metamorphic Rocks, Fred H. Perkins

Bachelors Theses

"There are two methods of arriving at the refractoriness of a rock. One is the physical, the other is the chemical. The physical methods attempt to determine it directly by subjecting it to heat, and the temperature obtained is registered by use of numerous methods, a type of each kind I will describe in this paper. The chemical methods attempt to arrive at the result by calculations based upon a chemical analysis, though one or more physical determinations have to be made as a basis for these calculations. As the former method is direct, my operations are based upon this …

Thesis For Degree Of Bachelor Of Science In Mining Engineering [A Fire Clay Of Missouri], Howard Joshua Taylor

Bachelors Theses

"The clay examined is a fire clay of Missouri, varying in color from white, in pure specimens, to yellow or brown when stained with iron. It is opaque with a luster, varying from dull to pearly, an argillaceous odor and unctous feel"--page 1.

The Mining & Construction Of A Smelter For The Production Of Zinc-White From Western Lead-Zinc Ores, Hector George Sylvester Anderson, V. B. Hinsch

Bachelors Theses

"On account of the high price of the old Dutch process of making white lead and the undesirability of sublimed white-lead as the bulk of the pigment, the use of zinc-white as an adulterant of the lead-white made by the old Dutch process is new extensively used by all paint manufacturers. The advantages of its use in conjunction with white-lead in the manufacture of white paints is the fact that it does not combine with sulphur as does white-lead itself. The specifications of the U. S. Light-house Dept. require 75% of zinc-oxide and 25% of white lead as a mixture. …

Design Of A Mining Plant, George C. Clark

Bachelors Theses

"It is to be hoped that in the perusal of this short discussion, the idea will not be lost sight of that the work has been done by a novice - probably a needless caution as the fact is patent at every step. Again, while the work is supposed to be laid along practical lines, no attempt has been made to abbreviate and show merely what is absolutely necessary. As the subject is treated as a thesis and not as a proposition to contractors, the attempt has been made to show the method of arriving at conclusions, and when necessary …

Gold Chlorination, Edwin Thompson Perkins

Bachelors Theses

"In a process of gold chlorination recently introduced and apparently used with success in Southern Australia, potassium permanganate, common salt and sulphuric acid were used as the generators of the chlorine. A series of experiments was made to determine the efficisacy of these reagents and for developing chlorine as compared with other methods in use"--page 1.

Electrolysis Of Water In A Copper Sulphate Solution, Hermann Otto Schulze

Bachelors Theses

No abstract provided.

Some Quantitative Experiments On The Electro-Deposition Of Copper, Jerrold Roscoe Underwood

Bachelors Theses

"The object of these experiments was to determine in a quantitative way the effect or effects, if any, of these various metals on the purity of the copper precipitated electrolytically. The material worked with was from a copper anode from ( ) carrying a silver, a trace of gold, arsenic and antimony as well as other metalic sic impurities"--Object, page 1.

Pennsylvania Coal Fields, Arthur D. Terrell

Bachelors Theses

"The use of mineral coal dates back before the Christian Era.

The mining of coal, however, is much more recent.

About the 18th century coal mining began to be scientifically executed.

The area of Anthracite coal fields in Penn. is not quite 500 square miles included in outcrop lines of its lowest beds"--page 1.

The Electrolysis Of The Water Of A Copper Sulphate Solution, Ralph Barker

Bachelors Theses

"The idea prevails generally, that when an electric current is passed through a copper sulphate solution, the water will be electrolysed sic when the difference of potential between the electrodes reaches about one and one-half volts. The object of the experiments detailed below was to determine whether or not the density of the solution has any effect on the electrolysis of the water, and if any such existed, to find out if there was any relation between them"--page 1.

Some Experiences With A Pan Amalgamation Mill, Guanacevi, Mexico, Arthur J. Stewart

Bachelors Theses

"The work of the chemist and assayer at a pan amalgamation mill is cheifly sic routine work. The work of one day differs, generally, very little from the work of an other day. But occasionally some contingency arises which taxes his ability to the utmost"--page 2.

Contact Plane Concentration, John A. Rogers, George Walter Dean

Bachelors Theses

"Contact plane concentration depends upon the principle that a thin sheet or film of water flowing over a plane surface may be so adjusted that its quantity and velocity are just sufficient to bear away the lighter particles of gangue, leaving behind only the heavier particles of the mineral to be concentrated, adhering by friction to the plane, the concentrates being removed by any convenient method. Thus we see it is best adapted to the concentration of minerals having widely differing specific gravities but may be used for the concentration of all ores and minerals with any specific gravity whatsoever"--page …

Hydraulic Separation, Albert Edwin Eardley, John Simpson Cameron

Bachelors Theses

"Before beginning a discussion of the various experiments performed with the hydraulic separators in the Laboratory of the S. of M., a brief statement as to the principle upon which their working depends, and their functions in the dressing of ores should be given. The crude ore when first delivered from the mine is usually not of sufficient richness to be economically handled by the smelters; it therefore becomes necessary to eliminate as far as possible that part of the ore which is of no material value, and among the various forms of apparatus now in use for this purpose …

Limitations Of Sizing In Concentration, Walter G. Martin

Bachelors Theses

"All ore reaching the mine mouth consists of two portions, the portion containing the mineral which is valuable, and the gangue or worthless portion. The ultimate object then of concentration is the complete separation of these two portions and in the cases when more than one mineral exists with the gangue, to separate the different mineral products from each other"--page 4.

Coke, Temple Dyer

Bachelors Theses

"Coke in general is applied only to the product got from bituminous coal by driving off volatile matter and cementing the coal into a localities; a small deposit being found near Richmond Va."--page 1.

Crushing Machines, Samuel J. Gormly

Bachelors Theses

"Crushing machines may be divided into: crushers, rolls, and pulverizers. Ore as it comes from the mine is usually in larger lumps which require breaking up preparatory to the subsequent treatment it may receive. For this purpose mechanical means must be employed, and the following pages are intended as a rational treatment of the most approved methods, in ore crushing at the present day"--page 1.

On The Fire Assay Of Gold, Silver, And Lead, Claude D. Grove

Bachelors Theses

No abstract provided.

The Cyanide Process For Gold, John C. Reid

Bachelors Theses

"Since the discovery of Cyanogen in the latter part of the 18th century records of many experiments are in existence, showing, that at various periods, exhaustive researches have been made, in which the point at issue was to investigate that property which now constitutes the foundation of what is known to Metallurgical Science of today as The Cyanide Process, vis. The solvent power of alkali cyanides on gold & silver"--page 2.

Extraction Of Silver By The Wet Way, Justo Garcia Martinez

Bachelors Theses

"The great variety of ores in which silver occurs, usually makes it necessary to employ complicated processes for its extraction.

The extraction of the precious metal admits of two general processes viz. The Dry, and Wet Way and as I have chosen the latter for the subject of my thesis, we will be dispensed with the Dry Way, and will try and give all the processes and forms in which silver is extracted by the Wet Way"--page 1.

The Systems Of Amalgamation, Floyd Davis

Bachelors Theses

"Mineralogists have shown that gold, with few exceptions, occurs in the metallic state, disseminated in ores or scattered throughout alluvial deposits of old river basins. Silver is quite similar in its occurrence, but it is almost universally found in combination with other elements. The means in which these metals occur forms a large factor in determining the most economical and efficient systems of metallurgical treatment"--page 1.