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Articles 28981 - 29010 of 29124
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Treatment Of A Complex Arizona Gold And Silver Ore, Edgar George Ross Manwaring, Clifford Redman Wilfley
Treatment Of A Complex Arizona Gold And Silver Ore, Edgar George Ross Manwaring, Clifford Redman Wilfley
Bachelors Theses
"The object of this thesis is to work out a commercially successful treatment of an Arizona Gold and Silver Ore"--page 1.
An Investigation Of The Chemical And Metallurgical Treatment Of A Cobalt And Nickel Ore, James Watts Caples
An Investigation Of The Chemical And Metallurgical Treatment Of A Cobalt And Nickel Ore, James Watts Caples
Bachelors Theses
"The ore, coming from a district located one hundred and fifteen miles from the nearest railroad point, in a mountainous country, barren of coal, and where freight rates were enormous; demanded a method of treatment not now in general use upon this class of ores, and one that would require as little freight haulage either way, as possible. With these object in view, the following work was done, after reading all the data obtainable upon the subject as found in the school library"--Introductory, page 1.
Cyanide Tests To Show Action Of Common Cyanicides, Charles L. Lintecum
Cyanide Tests To Show Action Of Common Cyanicides, Charles L. Lintecum
Bachelors Theses
"In view of the growing importance of the cyanide process and in that it seems destined to take an important place in the metallurgical treatment of gold and silver ores, the following tests have been taken as a thesis: It was intended at the onset to deal with varied ores and corroborate or establish any relation existing between such cyanicides as Cu, Bi, Sb, Mn, As, Fe, S and Te and the amount of cyanide consumed. This object however, was not fully realized owing to the fact that a large amount of work was done on ores No's. 1, 2, …
Analysis And Metallurgical Treatment Of Copper Ores From Ajo Basin, Arizona, Harry Carleton Chamberlain
Analysis And Metallurgical Treatment Of Copper Ores From Ajo Basin, Arizona, Harry Carleton Chamberlain
Bachelors Theses
"The purpose in mind, in writing this thesis, is to select the most economical method of treating the ores found in the Ajo Basin. The ore on the surface, and to a depth of thirty to forty feet, is almost exclusively carbonates in a silicious six gangue. Immediately underlying the carbonate ore comes the sulphide ore in its natural state, lying below any action of the elements, and is in various forms. The sulphide has been found in every shaft to its lowest depth"--page 1.
The Investigation Of The Deleterious Action Of Certain Metals On The Cyanide Process For Gold, Lamar Horacio Hunt, William Alexander Gardiner
The Investigation Of The Deleterious Action Of Certain Metals On The Cyanide Process For Gold, Lamar Horacio Hunt, William Alexander Gardiner
Bachelors Theses
"It is our desire in this thesis to try and verify, if possible, the results or conclusions published by several authorities on cyaniding regarding the deleterious action of certain metals on potassium cyanide, and also, to make experiments on several very refractory ores for the purpose of devising some economical method of treatment"--page 1.
Analytical Determination Of Copper Products, Charles Dosh Smith
Analytical Determination Of Copper Products, Charles Dosh Smith
Bachelors Theses
"It is a well known fact that the presence of impurities in copper products has been a source of annoyance to the Chemist. The object of this thesis was to make myself familiar with the actions of different impurities in copper products, and the methods for the determination of Arsenic in the same"--page 1.
Utilization Of The Water Of The Verde River For Power Purposes, Raphael Curier Alexander
Utilization Of The Water Of The Verde River For Power Purposes, Raphael Curier Alexander
Professional Degree Theses
"It is proposed to utilize the water of the Verde River for power purposes by constructing a power plant on the said river, and transforming the potential energy of the falling water into Electrical Energy, and the Electrical Energy transmitted over transmission lines to the various cities and mining camps in this vicinity where power is being used"--Proposition, page 1.
The Manufacture Of Coal Gas In St. Louis, Albert Dyke Wilson
The Manufacture Of Coal Gas In St. Louis, Albert Dyke Wilson
Professional Degree Theses
"Coal gas is made by heating Bituminous Coal in closed fire-clay retorts, for four or five hours, at a bright red heat. An exhauster pulls the gas from the retort as fast as it is generated in order to prevent, as much as possible, the breaking up of the hydrocarbons into carbon and hydrogen by the hot molls of the retort"--page 2.
The Reaction Velocity Of Ethylene And Iodine, Herbert Arno Roesler
The Reaction Velocity Of Ethylene And Iodine, Herbert Arno Roesler
Professional Degree Theses
"The constituents of coal or enriched water gas which give it value as a light producer are known collectively as "illuminants". They consist essentially of ethylene and propylene and in the analysis are determined by means of fuming sulphuric acid. This method of determination is very unsatisfactory as it is impossible to ascertain the relative percentages of the two gases, only the total being found. A series of experiments were made, for the purpose of finding a reagent that could be used for separating the members of the illuminating group and while thus engaged, a solution of iodine in potassium …
Copper Mining At Cananea, Sonora, Mexico, Albert Hill Fay
Copper Mining At Cananea, Sonora, Mexico, Albert Hill Fay
Professional Degree Theses
"Fifty miles southwest of Bisbee, Arizona, is one of the largest copper mines in the world, - a mine which six years ago was in the throes of the prospecting, developing, and litigation periods, and now turning out over five million pounds of copper bullion per month. This property is located at Cananea, District of Arizpe, sonora, Mexico, and is owned and controlled by the cananea Consolidated Copper Co. S.A. It is situated upon the northeast slope of a short range of mountains from which the town of Cananea derives its name. The port of entry for this part of …
The Measurement Of The Quantity Of Water Delivered By Meramec Spring, James K. Black, John Owen Ambler
The Measurement Of The Quantity Of Water Delivered By Meramec Spring, James K. Black, John Owen Ambler
Bachelors Theses
"Meremec Springs, the property of T. M. James, is located in the southeast quarter of section one, township thirty seven north, range six, west of fifth principal meridian in Phelps County, Missouri, and is about six miles southeast of St. James, Missouri. Within the last few years it has come into prominence as a probable source of the water supply for the City of St. Louis and its suburbs. As no acurate sic and extensive knowledge was available on the subject it was deemed a suitable subject for thesis work"--page 1.
The Design Of A Process And Plant For The Manufacture Of Alum From Clay, Clarence Woods
The Design Of A Process And Plant For The Manufacture Of Alum From Clay, Clarence Woods
Bachelors Theses
No abstract provided.
The Russell Process - Laboratory Tests And Design Of Plant, Charles G. Wrisberg, George Vest Bland
The Russell Process - Laboratory Tests And Design Of Plant, Charles G. Wrisberg, George Vest Bland
Bachelors Theses
No abstract provided.
The Absorption Of Matte By Sodium Carbonate, And The Effect On The Fire-Assay, Leo J. Foster, John Thomas Keenan
The Absorption Of Matte By Sodium Carbonate, And The Effect On The Fire-Assay, Leo J. Foster, John Thomas Keenan
Bachelors Theses
"It has been observed in practical and experimental work, that there is a variation in the fire assay values of some sulphide ores and mattes by the metallic iron method due to the proportions of the reagents used. This is shown in a particular manner in the use of sodium carbonate. there is also a corresponding variation in the amount of matte separating out in the assay by this method. It is a well known fact that mattes absorb both gold and silver and this has always been regarded as one objection to the assay of the ores of those …
Notes On Phelps County Ores, John Morgan Price, Evan Edmund Price
Notes On Phelps County Ores, John Morgan Price, Evan Edmund Price
Bachelors Theses
"In conclusion, summing up the evidence both field and theoretic, there are very good reasons for believing that the deposits which have been worked and are not being worked are not the only deposits of magnitude in the county but by intelligent prospecting along lines already suggested other large and valuable deposits will be found. From the manner of the ores concentration it is not to be expected that every deposit will have a surface outcrop neither is it probable that every depression will be found to contain an ore deposit but when these phenomena occur, together with other evidences …
The Design Of A Water Supply System For The Missouri School Of Mines, Lewis Alfred Delano, John Turner Rice
The Design Of A Water Supply System For The Missouri School Of Mines, Lewis Alfred Delano, John Turner Rice
Bachelors Theses
"The supply of water for use in the School of Mines has long been a subject of study and discussion. The school is located in the north end of Rolla, being on the highest part of the Ozark uplift and having an elevation of 1140 ft. above the sea This makes it very difficult for a reservoir of sufficient capacity to be located for the water supply of the city of Rolla. Therefore the city has no water work and it becomes necessary for the School of Mines to furnish its own water"--page 1.
Experiments On A Telluride Ore And Design Of Plant For Treating Same, Charles Le Clair King, John Severin Schroeder
Experiments On A Telluride Ore And Design Of Plant For Treating Same, Charles Le Clair King, John Severin Schroeder
Bachelors Theses
"The ore used in these experiments was a double telluride of gold and silver coming from L Plata, Colorado"--page 1.
The Study Of Ventilation By The Centrifugal Fan System, Glenn Beckley Morgan, Walter James Tweed
The Study Of Ventilation By The Centrifugal Fan System, Glenn Beckley Morgan, Walter James Tweed
Bachelors Theses
"The system under investigation was designed by the National Blower Works and consists of One Fan (see fan drawing) ten feet in diameter (guaranteed to deliver forty four thousand cubic feet of air at one hundred and thirty six revolutions per minute) housed in a three sixteenths inch steel plate casing which stands two hundred inches high from bottom of wheel pit to top of housing. One General Electric Motor of twenty horse power capacity at two hundred and twenty volts. A plenum chamber thirty four feet by twelve feet six inches from which extend forty galvanized iron air ducts …
Studies In Ore Deposition, Cyrus Edward Minor
Studies In Ore Deposition, Cyrus Edward Minor
Bachelors Theses
"The artificial preparation of natural occuring sic minerals is a matter of great interest and importance in the study of the conditions and processes involved in the deposition of ores. In a large number of instances, no difficulty is experienced in the laboratory manufacture, e.g. of calcite, arragonite, dolomite, strontianite, gypsum and other similar minerals may be obtained by crystallization out of molten masses, e.g. graphite, diamond, corrundum sic , etc.: still other cases in which special processes have been employed, have led to the production of compounds in the form in which they occur naturally. the facts so accumulated …
Design Of A Mill For The Concentration Of An Arkansas Zinc Ore, Ralph Augustus Conrads, Matthew Vincent Quinn
Design Of A Mill For The Concentration Of An Arkansas Zinc Ore, Ralph Augustus Conrads, Matthew Vincent Quinn
Bachelors Theses
"The material to be treated is a zinc ore from Boone County, Arkansas, a district as yet but little developed but from present indications of the ore deposits found in the vicinity, it promises in time to become one of the most important zinc producing districts of the United States"--page 1.
Neutralization Of Free Acid (H₃P O₄) In Commercial Mono-Calcium Phosphate (Ca H₄ (Po₄), George William Harris, Harry Adam Grine
Neutralization Of Free Acid (H₃P O₄) In Commercial Mono-Calcium Phosphate (Ca H₄ (Po₄), George William Harris, Harry Adam Grine
Bachelors Theses
"The object of this thesis has been a systematic research based on the characteristic properties and reactions of mono-calcium phosphate, Ca H₄ (PO₄)₂, tending towards the development of a process for neutralizing the free phosphoric acid, H₃PO₄ formed during its manufacture"--page 1.
The Electrolytic Refining Of Copper, Lewis S. Logan, Frank R. Bell
The Electrolytic Refining Of Copper, Lewis S. Logan, Frank R. Bell
Bachelors Theses
"Although copper can be separated from its solution by means of the electric current and the amount so separated varies directly as the current, there is a point in each and every solution where on account of the energy given off to the ions, the copper will be carried over in a more or less impure state, depending upon the strength of the current, the strength of the solution,whether it is saturated or only partly saturated, or whether normal basic or acid and also upon the amount of impurities in the solution. It is the purpose of this thesis (1) …
Methods Of Discharge Measurements Of Streams, Royal Sylvester Webster, Walter Adams Luther
Methods Of Discharge Measurements Of Streams, Royal Sylvester Webster, Walter Adams Luther
Bachelors Theses
"The method of determining the discharge of large streams is that in which the area of cross section is multiplied by the velocity per. sec. of the water passing through the section. The velocity can be measured by the following methods: 1. By floats. 2. Current Meters. 3. Pitots tube. 4. Can be determined by use of Kutter's formula"--page 1.
Dikes, John Edward Walker
Dikes, John Edward Walker
Bachelors Theses
"The term dikes is here used to refer duly to structures built out into running streams for the purpose of protecting the banks or of improving the channel of the river"--page 1.
Gold Precipitation, William H. Gill, Raphael Curier Alexander
Gold Precipitation, William H. Gill, Raphael Curier Alexander
Bachelors Theses
"Subject - Electrolytic precipitation of gold from cyanide solutions as compared with precipitation on zinc shavings"--page 1.
The Destructive Distillation Of Pine Sawdust, Frederick Hauenstein, Herbert Arno Roesler
The Destructive Distillation Of Pine Sawdust, Frederick Hauenstein, Herbert Arno Roesler
Bachelors Theses
"In many of the pine regions of the South, the operation of saw mills gives rise to immense quantities of waste products, such as slabs and sawdust. The sawdust especially, is of no practical value, accumulating in vast amounts; and, being very difficult to burn or otherwise dispose of, becomes a nuisance around the camp. The object of this thesis is to devise some means of utilizing the sawdust by recovering such constituents as might be of commercial importance "--page 1.
A Polyphase Generator Of The Missouri School Of Mines, Cornelius Mark Daily
A Polyphase Generator Of The Missouri School Of Mines, Cornelius Mark Daily
Bachelors Theses
"I have taken for the subject of my investigation a Four Pyle three phase generator marked 220 volts, 5 amp. per terminal, 1.87 K.W. capacity. In these experiments I have endeavored to find the characteristic features with as much precision as possible with the instruments at my command"--Introduction, page 2.
A Design Of An Ore Dressing Plant, Arthur Ignatius D'Arcy
A Design Of An Ore Dressing Plant, Arthur Ignatius D'Arcy
Bachelors Theses
No abstract provided.
Contour Map, Isaac Peter Frazier
Contour Map, Isaac Peter Frazier
Professional Degree Theses
"In discussing the contour map as used by locating engineers, I will confine myself chiefly to the method of obtaining same, rather than the use"--page 1.
The Smelting Of Lead Ores In Southwest Missouri, Jerrold Roscoe Underwood
The Smelting Of Lead Ores In Southwest Missouri, Jerrold Roscoe Underwood
Professional Degree Theses
No abstract provided.