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Articles 28861 - 28890 of 29124
Full-Text Articles in Entire DC Network
Suggested Improvements For A Wisconsin Zinc Mill, Raymond Alexander Bingham
Suggested Improvements For A Wisconsin Zinc Mill, Raymond Alexander Bingham
Bachelors Theses
No abstract provided.
Geology Of A Carboniferous Outlier In Lawrence County, Missouri, Maurice Merton Albertson
Geology Of A Carboniferous Outlier In Lawrence County, Missouri, Maurice Merton Albertson
Bachelors Theses
No abstract provided.
The Design Of A Sampling Mill To Treat A South East Missouri Lead Ore, Robert Nathaniel Copeland, Edwin Cook Mcfadden
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 …
Ratio Of The Thermal And Electrical Conductivities For Gas Carbon, Oscar Alan Randolph
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 …
The Determination Of The Electrical Resistance Of The Human Body Under Conditions To Be Met Within Underground Mining, Duncan S. Smith, Paul E. Coaske
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 …
Underground Records, Robert Hardy Bedford
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 …
The Rollamo 1911, The University Of Missouri School Of Mines And Metallurgy
The Rollamo 1911, The University Of Missouri School Of Mines And Metallurgy
Yearbooks
No abstract provided.
Method Of Obtaining And Preserving Data On Churn Drill Holes, Ira Lee Wright
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. …
Fluorspar Mining In Kentucky, Walter Coffran Richards
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, …
Scheme For The Treatment Of Copper Smelter Flue Dust, John Perry Walker
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.
The Determination Of The Best Treatment For A Certain Mexican Silver Ore, Sumner Cooley Macomber
The Determination Of The Best Treatment For A Certain Mexican Silver Ore, Sumner Cooley Macomber
Bachelors Theses
No abstract provided.
Topography And Geology Of The Panther Bluffs Area, Roswell H. Maveety, Joseph Stewart Irwin
Topography And Geology Of The Panther Bluffs Area, Roswell H. Maveety, Joseph Stewart Irwin
Bachelors Theses
No abstract provided.
A Comparative Test Of The Air Consumption Of Rock Drills, John Elmer Schultz, Christian R. Miller
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.
Design And Details Of Construction For A 50-Ton Amalgamation, Concentration, And Cyaniding Mill, Hector Julio Boza, Carlos Enrique Elmore Y Guerra
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 Test Of The Municipal Light And Water Plant Of The City Of Lebanon, Missouri, Roy Elliott Sprague, GermáN GarcíA Lozano, Shiv Raj
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 …
Mine Map And Geology Of Saltpeter Cave, Milan Harrison Detweiler, Frank Edgar Townsend
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.
Friction Of Air In Small Pipes And Fittings, Bejamin H. Cody, Ernest J. Allen
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.
Surveying Practice, Edwin Richard Wash
Surveying Practice, Edwin Richard Wash
Professional Degree Theses
No abstract provided.
A Study Of The Efficiency Of Discharge Of Classifier Spigots, Harmon Edwin Minor, James Bunten
A Study Of The Efficiency Of Discharge Of Classifier Spigots, Harmon Edwin Minor, James Bunten
Bachelors Theses
"A knowledge of the amounts of water and sand that will be discharged by classifier spigots under various conditions is of considerable importance in the design of classifiers. Suppose it is desired to discharge fifty tons of sand with an average diameter of 2 m.m. through a spigot orifice, the sand being mixed with 100 tons of water and the entire amount of the mixture being discharged in ten hours from the spigot, which is submerged to a depth of two feet under the water. How large a spigot is required? Problems such as this are by no means uncommon. …
Nichrome As A Rheostat Resistance, George C. Vogt
Nichrome As A Rheostat Resistance, George C. Vogt
Bachelors Theses
"Nichrome wire is a high resistance alloy, and is not appreciably effected in its resistance by changes of temperature to which it may be subjected in practice. This was shown by the low temperature coefficient obtained. Nichrome does not deteriorate by heating, as shown by torsion-tests after current has been passed through wire. German-Silver however, becomes brittle. Nichrome in a moist atmosphere corrodes rapidly, but in a relatively dry atmosphere, and heated red hot, no signs of oxidation or corrosion could be seen. By all results obtained as to strength, resistance, etc., Nichrome is superior to German-Silver as a resistance …
A Study Of The Electrical Resistance Of Coke, Gas-Carbon, And Kryptol Under Varying Conditions, Benton Franklin Murphy, Reuben Conrad Thompson
A Study Of The Electrical Resistance Of Coke, Gas-Carbon, And Kryptol Under Varying Conditions, Benton Franklin Murphy, Reuben Conrad Thompson
Bachelors Theses
"This thesis was undertaken to make a study of the resistance of coke, gas-carbon, and kryptol when used as resistors in the electric resistance furnace, which daily is becoming of increasing industrial importance. It would appear at first sight that the calculation and design of an electric resistance furnace would be an extremely simple problem, since the whole effect is the change of electrical energy into heat according to Joule's Law; but this is by no means the case, as the resistance of the resistor may change enormously during the run of the furnace. The great difficulty met with is …
Report Of Herald Mine, Joplin, Missouri, Clay Gregory
Report Of Herald Mine, Joplin, Missouri, Clay Gregory
Bachelors Theses
No abstract provided.
The Preparation Of Zinc Blende For Reduction, Frederick Edward Riede, Earl Frederick Boland
The Preparation Of Zinc Blende For Reduction, Frederick Edward Riede, Earl Frederick Boland
Bachelors Theses
"The object of this thesis was, in the beginning, to investigate the losses which occur throughout the process of extracting zinc from its ore. Owing to the length of time required in roasting and to the short period of time to do the work, we were compelled to limit ourselves to the roasting of zinc blende or the preparation of zinc blende for reduction"--page 3.
A Study Of Some Problems In Cyaniding, Sidney S. Schmidt, Russell B. Caples
A Study Of Some Problems In Cyaniding, Sidney S. Schmidt, Russell B. Caples
Bachelors Theses
"The object of the following tests was rather to determine quantitatively the consumption of Potassium Cyanide and of Sodium Cyanide when agitated by compressed air, and when agitated by compressed air in the presence of iron pyrite and in the presence of iron filings, than to explain chemically the causes for this consumption"--Part One, page 1. "The following tests were made to study the rate of percolation of water, under certain conditions, through pure quartz. the information sought is of importance in the cyanide process. By "rate of percolation" we mean the distance traveled in a unit time, by water …
The Design Of A Mill To Treat A Certain Gold-Silver Ore By Cyanidation, Emilio Diaz, Robert William Mackey
The Design Of A Mill To Treat A Certain Gold-Silver Ore By Cyanidation, Emilio Diaz, Robert William Mackey
Bachelors Theses
"The problem under consideration is the design of a hundred-ton mill for treating silver ores by cyanidation... The Sulphur is partly combined as Sulphide and partly as the Iron Sulphates, FeSO₄ and Fe₂(SO₄)₃. To determine the best method of procedure, preliminary tests were run on lots of 100 pounds each, this being crushed in a sampling grinder and classified into sand a slime"--Introduction, page 1.
Abstract Of The History Of The Metallurgy Of Iron And The Development Of Iron Blast Furnaces, Norman L. Ohnsorg
Abstract Of The History Of The Metallurgy Of Iron And The Development Of Iron Blast Furnaces, Norman L. Ohnsorg
Bachelors Theses
No abstract provided.
Modern Cyanide Practice, Harvey Edson Smith
Modern Cyanide Practice, Harvey Edson Smith
Bachelors Theses
"It is noticable sic that about all of the recent improvements in cyanide practise sic have been along mechanical rather than chemical lines. the use of oxidizers such as air, ozone, sodium peroxide, etc., the use of the salts of lead, and even the addition of a coating of lead to the zinc shavings in the extractor boxes were all recommended when the process was first advocated but sometimes for different reasons. In the early days of the process the addition of hypochlorites, alkaline persulphates, and the use of mercuric cyanide was also investigated but has not proven satisfactory owing …
Specifications And Bill Of Material For Roaster In Ore Dressing Laboratory Of Missouri School Of Mines, John Dee Harlan
Specifications And Bill Of Material For Roaster In Ore Dressing Laboratory Of Missouri School Of Mines, John Dee Harlan
Bachelors Theses
"POSITION OF ROASTER. In the North West corner of the East wing of the Metallurgy Building. The space allowed is nineteen feet (19ft) long by fifteen feet (15ft) wide. The floor is of concrete. The walls are of brick. OBJECT OF ROASTER. to give either an Oxidizing or a Reducing Roast; to partially roast the ore or to give it a dead roast"--SPECIFICATIONS, page 1.
Some Geology On The Weingarten Quadrangle, Missouri, John Whittlesey Bodman
Some Geology On The Weingarten Quadrangle, Missouri, John Whittlesey Bodman
Bachelors Theses
"The work in this report covers about 90 square miles situated in the east and middle portion of Ste. Genevieve County, Missouri, between townships 35-37 north and ranges 7-9 east. It is termed the Weingarten Quadrangle by the State Geological Survey...The body of the thesis is detailed areal mapping. All formations and structural features are put on a topographic map with a scale of 1/62,500, contour interval 20 ft., datum mean sea level"--page 1.
Friction In Small Air Pipes, Albert Park, Howard Kelsey Peterson
Friction In Small Air Pipes, Albert Park, Howard Kelsey Peterson
Bachelors Theses
"In the course in Compressed Air at the Missouri School of Mines our attention was called to the fact that no reliable data could be found relating to friction losses in pipes under three inches in diameter carrying compressed air. Therefore the undersigned decided to undertake as a thesis the securing of the needed data and herein are recorded the results of our work"--page 1.