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Articles 4381 - 4410 of 4559

Full-Text Articles in Engineering

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.


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 …


Fire Clays Of Phelps County, Arthur Harrison Cronk Jan 1912

Fire Clays Of Phelps County, Arthur Harrison Cronk

Bachelors Theses

No abstract provided.


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.


Fluorspar Mining In Kentucky, Walter Coffran Richards Jan 1911

Fluorspar Mining In Kentucky, Walter Coffran Richards

Professional Degree Theses

"The mining of fluorite, or fluorspar in Western Kentucky is one of the chief mineral industries of that State. As the number of mines and prospects is very great, a thorough treatise on the geology, mines, and methods of this district would make a large volume. This thesis will deal, however, with only a small part of the district, in which the mine operated by the author is located. Before going into detail, it might be well to mention a few points relative to the fluorspar industry in general. To the average person, fluorspar seems to be unknown. In fact, …


Underground Records, Robert Hardy Bedford Jan 1911

Underground Records, Robert Hardy Bedford

Professional Degree Theses

"It may save confusion to now state that "Underground Records" is used in sense of information regarding labor, supplies, and output of the underground proper, in distinction from "Costs" - a term here used for results of the sum total of all records after they have passed through the hands of the book keeping-accounting staff. The essentials of underground records are more or less carefully collected by all mining companies of any importance, but are too often, before they have come under the eyes of the mine management in intelligible or suggestive form, obscured by the addition of a "witches …


Method Of Obtaining And Preserving Data On Churn Drill Holes, Ira Lee Wright Jan 1911

Method Of Obtaining And Preserving Data On Churn Drill Holes, Ira Lee Wright

Professional Degree Theses

"In prospecting for copper by means of churn drills it is absolutely essential that accurate methods of sampling be employed if any dependence is to be put upon the results. Of equal importance is the recording and preservation of data regarding each hole after results are obtained. This applies to such information as location and elevation of holes, depth, water level, geology etc as well as to the assays of the samples. Future underground development will be guided by information obtained from the drill holes and any incompleteness in the records will cause uncertainty in the development of the mine. …


Topography And Geology Of The Panther Bluffs Area, Roswell H. Maveety, Joseph Stewart Irwin Jan 1911

Topography And Geology Of The Panther Bluffs Area, Roswell H. Maveety, Joseph Stewart Irwin

Bachelors Theses

No abstract provided.


Friction Of Air In Small Pipes And Fittings, Bejamin H. Cody, Ernest J. Allen Jan 1911

Friction Of Air In Small Pipes And Fittings, Bejamin H. Cody, Ernest J. Allen

Bachelors Theses

"The work of Park and Peterson during 1909-10 at the Missouri School of Mines revealed the fact that more data are needed concerning the loss of pressure due to elbows and other fittings of pipes under three inches in size. Accordingly, we decided to undertake the continuation of their work as a thesis. The apparatus used was practically the same as used in the previous thesis"--page 1.


A Test Of The Municipal Light And Water Plant Of The City Of Lebanon, Missouri, Roy Elliott Sprague, GermáN GarcíA Lozano, Shiv Raj Jan 1911

A Test Of The Municipal Light And Water Plant Of The City Of Lebanon, Missouri, Roy Elliott Sprague, GermáN GarcíA Lozano, Shiv Raj

Bachelors Theses

"The power plant tested for this Thesis is located at Lebanon, Missouri, on the St. Louis and San Francisco Railroad, and belongs to the City of Lebanon. The plant consists of two Brownell horizontal tubular boilers with a shell six feet by 18 feet, and each containing 70 four-inch tubes. The stack is 36 inches in diameter and at the time of the test, was broken off so that it was about 50 feet high. The boilers were fed by a steam pump, the water passing through a Cochrane heater. The engine equipment consists of one 10 by 12 inch …


Design And Details Of Construction For A 50-Ton Amalgamation, Concentration, And Cyaniding Mill, Hector Julio Boza, Carlos Enrique Elmore Y Guerra Jan 1911

Design And Details Of Construction For A 50-Ton Amalgamation, Concentration, And Cyaniding Mill, Hector Julio Boza, Carlos Enrique Elmore Y Guerra

Bachelors Theses

"Our problem is to design and provide for the construction of a mill to cyanide a certain gold ore. Full laboratory experiments have been made on the ore and on the results of these tests together with the consideration of the conditions of locality, transportation facilities, and labor available we have based the design of our mill. Our aim has been to so design the mill that the capacity may be increased without necessitating any change of arrangement in the part already constructed. To increase the capacity up to 100 tons practically the only additional equipment required will be in …


A Comparative Test Of The Air Consumption Of Rock Drills, John Elmer Schultz, Christian R. Miller Jan 1911

A Comparative Test Of The Air Consumption Of Rock Drills, John Elmer Schultz, Christian R. Miller

Bachelors Theses

"The aim of this thesis is an attempt to determine the relative efficiency, of four standard types of rock drills, as to air consumption. The air consumption was based upon the cubic inch of rock drilled by each machine. The orifice method of measurement being utilized, in connection with the exhaust to determine the desired consumption"--page 1.


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 …


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.


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.


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.


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.


Milling At Cananea, Dibrell Pryor Hynes Jan 1911

Milling At Cananea, Dibrell Pryor Hynes

Bachelors Theses

No abstract provided.


The Determination Of The Best Treatment For A Certain Mexican Silver Ore, Sumner Cooley Macomber Jan 1911

The Determination Of The Best Treatment For A Certain Mexican Silver Ore, Sumner Cooley Macomber

Bachelors Theses

No abstract provided.


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.


Mine Map And Geology Of Saltpeter Cave, Milan Harrison Detweiler, Frank Edgar Townsend Jan 1911

Mine Map And Geology Of Saltpeter Cave, Milan Harrison Detweiler, Frank Edgar Townsend

Bachelors Theses

"The date of discovery of Saltpeter Cave is not known and there is no way of determining it. Numerous accounts are given of the cave by the oldest settlers in the neighborhood, some of which are both startling and interesting. for instance, it is reported that the soldiers of the Confederate army visited this cave for the purpose of securing guano from which to extract saltpeter for use in the manufacture of gunpowder. This may be the origin of its name"--Geology, Page 1.


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.


Description Of The Surveys Of Portions Of The South And East Boundaries Of The Yellowstone National Park, Albert Babbitt Bartlett Jan 1910

Description Of The Surveys Of Portions Of The South And East Boundaries Of The Yellowstone National Park, Albert Babbitt Bartlett

Professional Degree Theses

"This Thesis will be generally descriptive of the points connected with obtaining the contract under which this survey was made, the outfit necessary for the part doing the work, the personnel of the party, and the duties of each man, the engineering instruments employed in the survey, the country through which the Boundary lines run and the difficulties encountered, the writing of the field notes, and is accompanied by illustrations"--Introduction, page 6.


Mining, Concentrating, And Smelting Of Lead And Zinc Ores In Hunan Province China, Tsik Chan Tseung Jan 1910

Mining, Concentrating, And Smelting Of Lead And Zinc Ores In Hunan Province China, Tsik Chan Tseung

Professional Degree Theses

"The mine in question lies in the western part of Shangning District, in the province of Hunan. It is about one hundred and twenty miles south of Changsha, the capital of the province. It may be reached by a four days' trip from Changsha on foot. One can also reach there by native boat in a few days, depending on the wind and the stage of water. The mine is about three miles from the Siang River. This river has its sources in the northern part of Kwangtung province and in the eastern part of Kwangsi province. It flows north-ward …


An Investigation Into The Causes Of Accidents To Shot Firers In Bituminous Coal Mines, George Edwin Lyman Jan 1910

An Investigation Into The Causes Of Accidents To Shot Firers In Bituminous Coal Mines, George Edwin Lyman

Professional Degree Theses

"In many cases the explosions which kill so many shot firers can be directly attributed to the presence of gas, or coal dust, but often there will be explosions of terrific violence in mines which are so wet as to preclude the possibility of dust being held in suspension in the air current, and where no gas has been detected in the history of the mine. Such an instance came under the writer's observation some time ago in which his opportunities of investigation were excellent, and the results of which may perhaps throw light on other apparently mysterious explosions of …


Reheating Compressed Air By Internal Combustion, Norman L. Ohnsorg Jan 1910

Reheating Compressed Air By Internal Combustion, Norman L. Ohnsorg

Professional Degree Theses

"The perfection of a reheater of high efficiency has been discussed and experimented upon for a period of time nearly as long as the application of compressed air itself. At the present time all the reheaters are by the external combustion of fuel as in the case of stoves or furnaces, where the air pipes are carried through the flames or is surrounded by steam pipes, or by some similar contrivance, all of which the heating efficiency of the fuel upon the compressed air is low, due to the great loss by radiation, and hot escaping gases. Reheating compressed air …


A New Copper District In Southern Arizona, Harry Carleton Chamberlain Jan 1910

A New Copper District In Southern Arizona, Harry Carleton Chamberlain

Professional Degree Theses

"Within the last two or three years, the copper mining industry has been growing at a remarkable rate. Perhaps not so much in the output of refined copper as in the exploitation and development of new fields. The panic of 1907 left its mark only too deep on many of the then producing mines. the inflated price of copper has aroused interest in those who owned or controlled small or undeveloped mines ... One of these districts is the one to be treated of in this report. It is not a new discovery, but rather one of the oldest camps …


Surveying Practice, Edwin Richard Wash Jan 1910

Surveying Practice, Edwin Richard Wash

Professional Degree Theses

No abstract provided.


Dredging, Swan River, Colorado, Henry William Lohman Jan 1910

Dredging, Swan River, Colorado, Henry William Lohman

Professional Degree Theses

"Operations for the extraction of gold from the gravels of this river, were started about ten years ago, at which time it was attempted by means of hydraulic elevators, later by means of the early type dredge, Risdon design, of which three were installed, and later still, an early type Bucyrus Dredge. These all resulted in failure, some alleged to have been due to impossibility of reaching bed-rock; small yardage capacity; and fraility [sic] of design. these have been overcome in the latest type of dredge constructed by the Bucyrus Company, description of which follow later. Dredging here, differs from …


Geology In The Vicinity Of Palmer, Mo., Alfred Nicks Detweiler, John Kavanaugh Forman Jan 1910

Geology In The Vicinity Of Palmer, Mo., Alfred Nicks Detweiler, John Kavanaugh Forman

Bachelors Theses

"This area has been of minor importance in the production of ore on a commercial scale, the ore mined being residual in clay in openings occuring sic in dolomite and with chert, all near the surface, the mining being done by individuals who felt disposed to sink a shaft on some supposedly mineralized spot in the hope of uncovering a few tons or ore. Mining operations have been carried on intermittently for more than a century, so we are told, the early miners breaking the rock by first heating it with a wood fire, and then suddenly cooling it with …