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Articles 33481 - 33510 of 33636
Full-Text Articles in Entire DC Network
Furnace Calculations, John Mcmillen Brooks
Furnace Calculations, John Mcmillen Brooks
Bachelors Theses
"A furnace that will smelt a given amount of material per twenty-four hours, to dimension parts, and finally draw the complete plans. Copper Matting Furnace"--Problem, page 1.
Report On Polaris Mine, Stanley Ralston Moore
Treatment Of Joplin Tailings, Preston King Horner
Treatment Of Joplin Tailings, Preston King Horner
Bachelors Theses
"In the Joplin region are enormous piles of tailings, that for waste material, run very high in blende. This is due mainly to the temporary character of the mills which are built with more regard to low first cost than to receiving a high percentage of extraction. As a result we have some piles of tailings containing from 200,000 to 300,000 tons of materials that will average from about 2 to 3% zinc, and all crushed so as to pass through about #2 mesh"--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 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.
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.
Lead Blast Furnace Run, Ray Eugene Hoffman, John Henry Clary, Jesse Herman Steinmesch, Cecil Theodore Green, Walter Scott Grether
Lead Blast Furnace Run, Ray Eugene Hoffman, John Henry Clary, Jesse Herman Steinmesch, Cecil Theodore Green, Walter Scott Grether
Bachelors Theses
"The object of this thesis was to familiarize ourselves with the practical processes involved in a blast furnace run, and to observe the difficulties to be overcome in the operation"--page 2.
The Treatment Of A Gold-Silver-Copper Ore By The Argo Process, Elmer Cooper Heck, Josephus Jarvis Brown
The Treatment Of A Gold-Silver-Copper Ore By The Argo Process, Elmer Cooper Heck, Josephus Jarvis Brown
Bachelors Theses
No abstract provided.
The Lignite Coal Of North Dakota, Clyde Mckeever Laizure, James Knight Christopher
The Lignite Coal Of North Dakota, Clyde Mckeever Laizure, James Knight Christopher
Bachelors Theses
"Owing to the great abundance of coal, both anthracite and bituminous, in the United States, no state need suffer for the lack of it, but to those states like North Dakota, situated in the great plains region and at great distances from such coal supplies, the price of these coals makes them almost luxuries. In the last few years however, the development of the lignite coal within the state of North Dakota has shown an abundance of fuel for many years to come, which, though at one time considered "A poor excuse for poor wood," now competes successfully with any …
The Russell Process -- Laboratory Tests And Design Of Plant, Alfred A. Thomas Jr., Thomas Cowperthwaite
The Russell Process -- Laboratory Tests And Design Of Plant, Alfred A. Thomas Jr., Thomas Cowperthwaite
Bachelors Theses
No abstract provided.
Laboratory Tests And Design Of Plant For Treatment Of Gold Ore, William Charles Wyman, Julian Insco Prugh
Laboratory Tests And Design Of Plant For Treatment Of Gold Ore, William Charles Wyman, Julian Insco Prugh
Bachelors Theses
"The object of this work was to determine methods and design plants best adapted for the estraction sic of gold from a given ore in the most profitable manner. In the following sheets are given in detail the work carried out and our conclusions as to the best method of treating this particular ore"--page ii.
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.
A Study Of Kentucky Fluorite, William Corsey Nesbitt
A Study Of Kentucky Fluorite, William Corsey Nesbitt
Bachelors Theses
"The Kentucky fluor-spar district, embracing Crittenden, Livingston and Caldwell counties in western Kentucky, is the only section in America, with the exception of southern Illinois, where fluor-spar is mined, ground, and shipped in quantity. The fluor-spar is also associated with rich surprises in zinc and lead ores. Before proceeding to a study of the district in question, it may be well to give a brief description of the mineral itself"--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.
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, …
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 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 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 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 …
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.
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 …