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Articles 192271 - 192300 of 192583

Full-Text Articles in Engineering

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. …

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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.

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Ratio Of The Thermal And Electrical Conductivities For Gas Carbon, Oscar Alan Randolph Jan 1911

Ratio Of The Thermal And Electrical Conductivities For Gas Carbon, Oscar Alan Randolph

Bachelors Theses

"The method of F. Kohlrausch for the determination of the ratio of the heat conductivity upside down gamma , to the electrical conductivity k of a substance is of practical value as well as of theoretical interest. Of practical value because there may be obtained from it - with much great ease than by direct methods - the heat conductivity which has immediate applications, not only to the design and construction of furnaces, but to various other matters of such import; of theoretical interest to the physicist, because of the Wiedmann-Franz and its consequent relation to the electron theory; to …

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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.

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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 …

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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 …

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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.

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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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The Determination Of The Electrical Resistance Of The Human Body Under Conditions To Be Met Within Underground Mining, Duncan S. Smith, Paul E. Coaske Jan 1911

The Determination Of The Electrical Resistance Of The Human Body Under Conditions To Be Met Within Underground Mining, Duncan S. Smith, Paul E. Coaske

Bachelors Theses

"The use of electric wires in mines for power purposes is dangerous to human life. Deaths occur every year from electric shocks, and in most cases these accidents could have been prevented if some precaution had been taken by the victims, or if some care had been taken to protect them from coming in contact with live wires. Most workingmen accustomed to working around electric wires become careless and a lack of knowledge of the danger involved gives rise to the many accidents that occur each year...The object of this investigation is to determine just what resistance the human body …

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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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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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Scheme For The Treatment Of Copper Smelter Flue Dust, John Perry Walker Jan 1911

Scheme For The Treatment Of Copper Smelter Flue Dust, John Perry Walker

Bachelors Theses

"In recent years, methods for improving the prevailing practice in treatment of flue dust have demanded the attention of those engaged in the copper and lead industries. Great advancement has been made in the more complete settling of the dust in large chambers and flues, and in some instances, more particularly in the case of lead smelters, in its extraction from the flue discharge of the furnaces by filtration through bags. Schemes for re-treating this recovered dust are, however, in a somewhat undeveloped state"--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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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.

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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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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.

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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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A Design Of An Electrical Power Plant, B. C. Russell Jan 1911

A Design Of An Electrical Power Plant, B. C. Russell

Undergraduate Theses and Senior Projects

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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Energy Loss In Commercial Condensers, Walter Roland Allen May 1910

Energy Loss In Commercial Condensers, Walter Roland Allen

Electrical and Computer Engineering ETDs

The investigation of the energy loss in condensers is one which electricians and experimenters have long carried on. Their efforts have been restricted chiefly to alternating currents. Many methods have been proposed and used with varying success. The losses in condensers are due to dielectric hysteresis and leakage. That the dielectric of a condenser becomes heated when an alternating current is applied to terminals has long been known. A condenser which has been charged does not lose its entire charge when it is discharged, part of it remaining as a residual charge. Kleiner used the thermo-couple embedded in the dielectric …

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The Development Of The Minneapolis Sewer System, Andrew Rinker Jan 1910

The Development Of The Minneapolis Sewer System, Andrew Rinker

Journal of the Minnesota Academy of Science

No abstract provided.

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Preliminary Investigation For The Development Of An Hydro-Electric Plant Okanagan Valley British Columbia, Robert Arthur Barton Jan 1910

Preliminary Investigation For The Development Of An Hydro-Electric Plant Okanagan Valley British Columbia, Robert Arthur Barton

Professional Degree Theses

"The Okanagan Valley of British Columbia extends one hundred and thirty-nine miles North from the International Boundary and is immediately West of the Gold Range, an off-shoot of the Rockies ... The suitability of the soil and climate for growing fruit and other special crops has long been recognised; and in the favoured localities, where water is easily obtainable for irrigation, great advance has been made in the last ten years in this direction ... In a mountainous country, where water is abundant and power is needed for transportation, lighting town, and running factories, the natural result is an investigation …

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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.

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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 …

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Laboratory Methods For Copper-Nickel Ores, Walter Irving Phillips Jan 1910

Laboratory Methods For Copper-Nickel Ores, Walter Irving Phillips

Professional Degree Theses

"The Sudbury nickel field, situated in the Province of Ontario, Canada, near the northern shore of Lake Huron, was practically discovered when building the Canadian Pacific Railway. The method of deposit is unusual in that it is not a vein filling but a true igneous deposition. The magma carried besides rock making constituents three principle sulphides, viz. - those of iron as pyrrhotite; of copper as chalcopyrite; and of nickel as pentlandite. These three sulphides, being heavier than the rock matter, and, favored by the slow rate of cooling of the magma, had sufficient time to settle into the lowest …

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The Design And Installation Of An Apparatus For Dehydrating The Air Which Is Used In The Blast Furnaces Of The Hanyang Iron And Steel Works And Other Suggested Improvements, Hanyang, Hupei, China, Andrew Jackson Seltzer Jan 1910

The Design And Installation Of An Apparatus For Dehydrating The Air Which Is Used In The Blast Furnaces Of The Hanyang Iron And Steel Works And Other Suggested Improvements, Hanyang, Hupei, China, Andrew Jackson Seltzer

Professional Degree Theses

"The Hanyang Iron and Steel Works is located in the city of Hanyang, Hupei Province, inland on the mighty Yangste Kiang, a distance of one thousand seventy-five kilometers from Shanghai. The Works is at the junction of the Yangste and Han Rivers and covers several acres. The Works was established by the Viceroy Tchan and was to have been located at Shanghai, but His Excellency, the Viceroy, was transferred to Wuchang, so he decided to locate the Works in Hanyang - just on the opposite bank of the Yangste, from Wuchang ... The Works originally consisted of two blast furnaces …

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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 …

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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 …

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