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Articles 197821 - 197850 of 198156

Full-Text Articles in Engineering

Statement Of Mining Costs In The Butte District Three Months Ending June First 1910, Clifford Leroy Conway, George Sylvester Thomas, George Francis Condon Jan 1912

Statement Of Mining Costs In The Butte District Three Months Ending June First 1910, Clifford Leroy Conway, George Sylvester Thomas, George Francis Condon

Bachelors Theses

"The following cost data were compiled from the monthly cost sheets of the several mines, through a period of three months, April, May and June 1910. These figures were obtained from the cost sheets of the Anaconda Copper Mining Co. and are exact in every instance. The scale of wages and the cost of supplies which prevailed during the period that these figures were created were as follows"--page 3.

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Roasting Pyrite For Magnetism With Minimum Sulphur Volatilization, Dale Irwin Hayes, Clark Watson Wright Jan 1912

Roasting Pyrite For Magnetism With Minimum Sulphur Volatilization, Dale Irwin Hayes, Clark Watson Wright

Bachelors Theses

"In Wisconsin and other zinc mining districts the blende is frequently found associated with pyrite and marcasite. In the Wisconsin district, especially, the marcasite content of the mine-run ore is high being frequently equal to and in many cases greater than the sphalerite content. At time the marcasite and sphalerite together constitute as much as 25 or 30% of the min-run ore. The characteristic milling treatment of this ore is; first, hand-picking, and then over grizzlies, tromells, rougher and cleaner jigs. Owing to the fact that marcasite and sphalerite differ but slightly in specific gravity the jig concentrate obtained is …

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Geology Of Beaver Quadrangle, Robert Justice Paulette, James Lawton Keelyn Jan 1912

Geology Of Beaver Quadrangle, Robert Justice Paulette, James Lawton Keelyn

Bachelors Theses

No abstract provided.

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Fire Clays Of Phelps County, Arthur Harrison Cronk Jan 1912

Fire Clays Of Phelps County, Arthur Harrison Cronk

Bachelors Theses

No abstract provided.

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Testing Explosives, Frank James Flynn, Miller Edward Willmott Jan 1912

Testing Explosives, Frank James Flynn, Miller Edward Willmott

Bachelors Theses

"The following tests and experiments were carried on to determine: first, the utility of a certain well known method of making comparative tests of explosives and second; to show some of the conditions that influence the force and effect of a blast, such as the size of detonator, the use of tamping, the size of bore hole, and the size and number of free faces exposed to the blast"--Introduction, page 1.

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The Design Of A Water Supply Distributing System For The City Of St. James, Missouri, Arch W. Naylor, John Hurtgen Jan 1912

The Design Of A Water Supply Distributing System For The City Of St. James, Missouri, Arch W. Naylor, John Hurtgen

Bachelors Theses

"The design of the distributing system, being governed by the fire requirements, it is proposed to provide three 250-gallon fire streams under a hydrant pressure of 70 pounds per square inch for the business section, from Scioto St. to Bowman St and from Seymour St. to Meramec St with a maximum length of hose of six hundred feet; and two fire streams of a minimum total capacity of 425 gallons, each under a hydrant pressure of 72 pounds per square inch for the outlying district; the water to enter the system under a pressure of 100 pounds per square inch... …

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A Comparison Of The Silver Losses Due To Cupellation Using Different Kinds Of Cupels, Martin Harmon Thornberry Jan 1912

A Comparison Of The Silver Losses Due To Cupellation Using Different Kinds Of Cupels, Martin Harmon Thornberry

Bachelors Theses

"In this Thesis my object has been to ascertain the silver losses in cupellation with different kinds of cupel material, thereby determining the effeciency sic of the materials in the four kinds of cupels used. When I began the work I though the losses would be about equal in all cupels, but was surprised to find such a great difference. I refer the reader to the curves to see what really happened"--page i.

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Efficiency Of The Missouri School Of Mines Power Plant And Cost Of Operation, Cairy C. Conover, John Richardson Kenney, Louie Lincoln Coover Jan 1912

Efficiency Of The Missouri School Of Mines Power Plant And Cost Of Operation, Cairy C. Conover, John Richardson Kenney, Louie Lincoln Coover

Bachelors Theses

"These tests were made for the purpose of getting the efficiency of the electric power plant as it was being run and the cost of operating it. Tests were first made on the boilers separately. The load at the time of the test was too heavy for one boiler and too light for tow, part of the steam being used for heating the buildings and for the air-compressor. This made it so that no combined test of the boilers and generating couple could be made until the warm weather came and the laboratories using compressed air were closed, which was …

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Efficiency Of The Missouri School Of Mines Power Plant, Eugene Harding Broughton, William Henry Elbelt Jan 1912

Efficiency Of The Missouri School Of Mines Power Plant, Eugene Harding Broughton, William Henry Elbelt

Bachelors Theses

"The test was made for the purpose of determining the efficiency of the power plant as it is being run"--page 3.

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A Determination Of The Steam Consumption In The Engines Of The School Of Mines Power Plant By Means Of A Steam Flow-Meter, Harold Percy Ford, Scovill Edward Hollister Jan 1912

A Determination Of The Steam Consumption In The Engines Of The School Of Mines Power Plant By Means Of A Steam Flow-Meter, Harold Percy Ford, Scovill Edward Hollister

Bachelors Theses

No abstract provided.

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The Effect Of Aluminum On Bronze, Edward Dale Lynton Jan 1912

The Effect Of Aluminum On Bronze, Edward Dale Lynton

Bachelors Theses

"The object of this thesis is to determine the effect of aluminium sic on bronze and find the best composition for commercial use"--Object, page 3.

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The Geology Of A Complexly Folded Area On Crooked Creek, In Crawford County, Missouril, Victor Harmon Hughes Jan 1912

The Geology Of A Complexly Folded Area On Crooked Creek, In Crawford County, Missouril, Victor Harmon Hughes

Professional Degree Theses

"The area comprising the subject of this thesis lies in the southwestern part of Crawford county, 2 1/2 miles east of Wesco and 12 miles south of Steelville, the county seat. It embraces all of sections 17 and 20 and portions of sections 7, 8, 16, 18, 19, and 21, township 36 north, range 4 west. The area is of special economic interest in that the formations exposed are the same as those occurring in the southeastern Disseminated Lead district of St. Francois, Madison, and Washington counties. Until discovered in 1910 by assistants of the Geological Survey, these formations were …

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The Effect Of Steam As A Combustion Retarding Agent In The Gasification Of Crude Oil By Partial Combustion, Harry Adam Grine Jan 1912

The Effect Of Steam As A Combustion Retarding Agent In The Gasification Of Crude Oil By Partial Combustion, Harry Adam Grine

Professional Degree Theses

"Investigations of the effect of steam used as a combustion retarding agent to prevent the formation of free carbon, or lamp black by-product in the gasification of crude oil by partial combustion to make producer gas"--page ii.

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Cost Of Brick Pavement Constructed, William Mcelroy Jan 1912

Cost Of Brick Pavement Constructed, William Mcelroy

Professional Degree Theses

No abstract provided.

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Plans And Specifications Of A Proposed Plant For Treating The High-Grade Silver Concentrate Of The Buffalo Mill By Tube-Mill Amalgamation, Hector George Sylvester Anderson Jan 1912

Plans And Specifications Of A Proposed Plant For Treating The High-Grade Silver Concentrate Of The Buffalo Mill By Tube-Mill Amalgamation, Hector George Sylvester Anderson

Professional Degree Theses

"Pursuant to your orders regarding the making of experimental tests on the high-grade silver concentrate of the Buffalo Mill, both on a small and a commercial scale, to determine the feasibility of extracting the silver contents and refining the same to 999-fine bullion I beg to submit the results of my work which has extended through the past two months. In the majority of the tests I have used a small Abbe-Engineering pebble-jars which will hold easily 1500 grams of ore and have checked the results obtained in these cases by similar results obtained by charging 1000 lbs. of ore …

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Depreciation, Reginald Henry Brinton Butler Jan 1912

Depreciation, Reginald Henry Brinton Butler

Professional Degree Theses

"In estimating and stating working costs, we are often brought face to face with an important item of expense, for which no receipt is ever given and no invoice is ever rendered, viz: DEPRECIATION. For this reason perhaps the different ways of charging this liability are innumerable. No two people often have their minds cast into similar moulds and in the charging of this item, the human and personal factor enters very largely into consideration. People differ widely as to just what part of the capital must be laid aside to meet "changing conditions in trade" and what ought to …

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A Study To Determine The Best Method Of Treatment For A Certain Gold-Silver Ore, Deane Dwight Harris, Duane Montgomery Kline Jan 1912

A Study To Determine The Best Method Of Treatment For A Certain Gold-Silver Ore, Deane Dwight Harris, Duane Montgomery Kline

Professional Degree Theses

"The purpose of this thesis is to find a suitable method for extracting the gold and the silver from an amalgamation tailing"--Purpose, page 1.

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De Re Metallica, Translated From The First Latin Edition Of 1556, Georgius Agricola Jan 1912

De Re Metallica, Translated From The First Latin Edition Of 1556, Georgius Agricola

Rare Books

No abstract provided.

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Crystallization Of Magmas, Norman L. Ohnsorg Jan 1912

Crystallization Of Magmas, Norman L. Ohnsorg

Bachelors Theses

"The object of this paper is to arrive at a better explanation of the segregation of magmatic solutions on cooling. In which magmas will be discussed from a chemical and metallurgical lien of reasoning, in showing why such minerals as apatite, magnetite, etc., having a comparatively low melting point, crystallize cut before feldspar and quartz, which have a comparatively high fusion point"--page 1.

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Electrode Potential Of Galena, Robert Emmett Dye Jan 1912

Electrode Potential Of Galena, Robert Emmett Dye

Bachelors Theses

No abstract provided.

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Treatment Of An Arizona Gold Ore, Scott D. Callaway, Henry F. Adams Jan 1912

Treatment Of An Arizona Gold Ore, Scott D. Callaway, Henry F. Adams

Bachelors Theses

"This thesis is a description of experiments preformed sic to determine the best scheme of treatment of a gold ore"--page 1.

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The Efficiency Of The Rolla Municipal Power Plant, True Walter Blake, Otto Allen Lunak Jan 1911

The Efficiency Of The Rolla Municipal Power Plant, True Walter Blake, Otto Allen Lunak

Bachelors Theses

"The object of this thesis is to determine the efficiency of the separate units and of the plant as a whole under actual normal working conditions"--Object, page 1.

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Milling At Cananea, Dibrell Pryor Hynes Jan 1911

Milling At Cananea, Dibrell Pryor Hynes

Bachelors Theses

No abstract provided.

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Experiments On Plain And Reinforced Concrete, Paul M. Barnes, Wesley Ruby, Reuben M. Stee Jan 1911

Experiments On Plain And Reinforced Concrete, Paul M. Barnes, Wesley Ruby, Reuben M. Stee

Undergraduate Theses and Senior Projects

No abstract provided.

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A Study To Determine A Process For The Treatment Of An Amalgamation Tailing, Robert Bruce Mitchell, Edward William Engelmann Jan 1911

A Study To Determine A Process For The Treatment Of An Amalgamation Tailing, Robert Bruce Mitchell, Edward William Engelmann

Bachelors Theses

"The ore for this series of experiments is the tailing from the old ore-dressing mill at Missouri School of Mines. In undertaking the task of devising a cyanide scheme for this tailing we knew that we had no little amount of work before us, neither were we sure of success, for all attempts thus far to cyanide this tailing had failed"--page 2.

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Sulpho - Telluride Ore, David Lawton Forrester, Harry W. L. Porth Jan 1911

Sulpho - Telluride Ore, David Lawton Forrester, Harry W. L. Porth

Bachelors Theses

"The problem considered in this work, is the determination of a suitable scheme for cyaniding a low grade Cripple Creek ore. For several years many attempts have been made to solve the metalurgical sic problem presented by such ores"--page 1.

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Evidence Relative To The Effect Of Mechanical Mixing Of Charges In The Fire Assay, James Keller Beach Jan 1911

Evidence Relative To The Effect Of Mechanical Mixing Of Charges In The Fire Assay, James Keller Beach

Bachelors Theses

"While mixing has always been suggested in the text books, on assaying, yet it seems that experimental data as to the effect of lack of mixing, or insufficient mixing, is not available. This thesis was conducted in an effort to determine just what variation and irregularity in the fusion of gold and silver ore was caused by non-mixing; i. e., whether the fusion took place in the same length of time, whether the fusion was complete, whether the values were collected and, in general, just what irregularities were incurred"--Statement of the Problem, page 2.

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Suggested Improvements For A Wisconsin Zinc Mill, Raymond Alexander Bingham Jan 1911

Suggested Improvements For A Wisconsin Zinc Mill, Raymond Alexander Bingham

Bachelors Theses

No abstract provided.

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Geology Of A Carboniferous Outlier In Lawrence County, Missouri, Maurice Merton Albertson Jan 1911

Geology Of A Carboniferous Outlier In Lawrence County, Missouri, Maurice Merton Albertson

Bachelors Theses

No abstract provided.

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The Design Of A Sampling Mill To Treat A South East Missouri Lead Ore, Robert Nathaniel Copeland, Edwin Cook Mcfadden Jan 1911

The Design Of A Sampling Mill To Treat A South East Missouri Lead Ore, Robert Nathaniel Copeland, Edwin Cook Mcfadden

Bachelors Theses

"The purpose of the work that was undertaken in preparing this thesis was to provide plans and specifications for a sampling mill to be erected by the St. Louis Smelting and Refining Co. at their plant near St. Francois, Mo... It was intended at the outset to design the plant completely and to provide full working drawings and specifications for all parts of the mill. On account of the lack of time, however, it has been found necessary to somewhat reduce the amount of work. As a result only general plans and specifications with a few of the more important …

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