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Articles 153541 - 153570 of 153769

Full-Text Articles in Engineering

The Treatment Of A Gold-Silver-Copper Ore By The Argo Process, Elmer Cooper Heck, Josephus Jarvis Brown Jan 1905

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 Jan 1905

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 Jan 1905

The Russell Process -- Laboratory Tests And Design Of Plant, Alfred A. Thomas Jr., Thomas Cowperthwaite

Bachelors Theses

No abstract provided.


The Investigation Of The Deleterious Action Of Certain Metals On The Cyanide Process For Gold, Lamar Horacio Hunt, William Alexander Gardiner Jan 1905

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.


Laboratory Tests And Design Of Plant For Treatment Of Gold Ore, William Charles Wyman, Julian Insco Prugh Jan 1905

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 Jan 1905

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.


Analytical Determination Of Copper Products, Charles Dosh Smith Jan 1905

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.


A Study Of Kentucky Fluorite, William Corsey Nesbitt Jan 1905

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.


An Investigation Of The Chemical And Metallurgical Treatment Of A Cobalt And Nickel Ore, James Watts Caples Jan 1905

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.


Analysis And Metallurgical Treatment Of Copper Ores From Ajo Basin, Arizona, Harry Carleton Chamberlain Jan 1905

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.


Cyanide Tests To Show Action Of Common Cyanicides, Charles L. Lintecum Jan 1905

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 ...


Utilization Of The Water Of The Verde River For Power Purposes, Raphael Curier Alexander Jan 1905

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 Jan 1905

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 Jan 1905

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 Jan 1905

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 ...


Front Matter, The Transit, Vol. 9, 1904 Jan 1904

Front Matter, The Transit, Vol. 9, 1904

The Transit

No abstract provided.


Street Grades, Charles P. Chase Jan 1904

Street Grades, Charles P. Chase

The Transit

No abstract provided.


A Theorem In Combinations, J. V. Westfall Jan 1904

A Theorem In Combinations, J. V. Westfall

The Transit

No abstract provided.


Empirical Constants And Formula, Arthur G. Smith Jan 1904

Empirical Constants And Formula, Arthur G. Smith

The Transit

No abstract provided.


Masonry Arches, C. H. Smith Jan 1904

Masonry Arches, C. H. Smith

The Transit

No abstract provided.


Engineering Society Of University Of Iowa, 1903 Jan 1904

Engineering Society Of University Of Iowa, 1903

The Transit

No abstract provided.


Directory Of The Engineering Alumni Of The University Of Iowa, 1903 Jan 1904

Directory Of The Engineering Alumni Of The University Of Iowa, 1903

The Transit

No abstract provided.


Back Matter, The Transit, Vol. 9, 1904 Jan 1904

Back Matter, The Transit, Vol. 9, 1904

The Transit

No abstract provided.


Modern Methods Of Book Composition, Theodore Low De Vinne Jan 1904

Modern Methods Of Book Composition, Theodore Low De Vinne

Electronic Texts in American Studies

A TREATISE ON TYPE-SETTING BY HAND AND BY MACHINE AND ON THE PROPER ARRANGEMENT AND IMPOSITION OF PAGES

I EQUIPMENT. Types ... Stands .•. Cases ••. Case-racks.

II EQUIPMENT. Galleys and galley-racks ... Compositors' implements Brass rules and cases for labor-saving rule and leads … Dashes and braces ... Leads ... Furniture of wood and ofmeiaI .•. Furniture-racks ••. Quotations and electrotype guards.

III COMPOSITION. Time-work and piece-work •.. Customary routine on book-work ... Justi1lcation ... Spacing and leading Distribution ... Composition by hand and machine

IV COMPOSITION OF BOOKS. Title-page ... Preface matter ... Chapter headings and synopsis ... Subheadings ... Extracts ... Notes and illustrations ... Running titles and paging at head or at foot ... Poetry ... Appendix ...


Design Of An Electric Light Plant, For The Board-Walk And Pavilions At Asbury Park, N.J., Charles Greene Baumgartner Jan 1904

Design Of An Electric Light Plant, For The Board-Walk And Pavilions At Asbury Park, N.J., Charles Greene Baumgartner

Undergraduate Honors Theses and Capstone Projects

Design of an electric light plant, for the board-walk and pavilions at Asbury Park, N.J.


The Measurement Of The Quantity Of Water Delivered By Meramec Spring, James K. Black, John Owen Ambler Jan 1904

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 Jan 1904

The Russell Process - Laboratory Tests And Design Of Plant, Charles G. Wrisberg, George Vest Bland

Bachelors Theses

No abstract provided.


Neutralization Of Free Acid (H₃P O₄) In Commercial Mono-Calcium Phosphate (Ca H₄ (Po₄), George William Harris, Harry Adam Grine Jan 1904

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 Absorption Of Matte By Sodium Carbonate, And The Effect On The Fire-Assay, Leo J. Foster, John Thomas Keenan Jan 1904

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 Jan 1904

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 ...