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Articles 13171 - 13200 of 13204
Full-Text Articles in Entire DC Network
A Study Of The Roubidoux In The Vicinity Of Rolla, John Elmer Schultz, William Grover Branham
A Study Of The Roubidoux In The Vicinity Of Rolla, John Elmer Schultz, William Grover Branham
Bachelors Theses
"The purpose of this investigation was to discover the character of the texture and structural features of the Roubidoux within the area and the probable agencies which worked to produce them"--Purpose of Investigation, page 3.
Chemical Analyses Of Special Tool Steels, Elmer List
Chemical Analyses Of Special Tool Steels, Elmer List
Bachelors Theses
No abstract provided.
A Comparison Of Various Methods Of Assaying Cyanide Solutions For Gold, Theodore Saunders Dunn
A Comparison Of Various Methods Of Assaying Cyanide Solutions For Gold, Theodore Saunders Dunn
Bachelors Theses
"Although there has been a great deal written on the different methods of assaying cyanide solutions and new methods are being devised constantly there has been very little said as to the relative merits of the methods in use. An attempt has therefore been made in this paper to compare several of the methods now used"--page 1.
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 …
An Investigation Of Certain Methods For The Determination Of Gold In Cyanide Solutions, James Joseph Bowles
An Investigation Of Certain Methods For The Determination Of Gold In Cyanide Solutions, James Joseph Bowles
Bachelors Theses
"Some questions having been raised as to the reliability of the various methods for the quantitative determination of gold in cyanide solution, this work was undertaken with the view of determining the relative accuracy and convenience of these methods"--page 2.
The Rollamo 1910, The University Of Missouri School Of Mines And Metallurgy
The Rollamo 1910, The University Of Missouri School Of Mines And Metallurgy
Yearbooks
No abstract provided.
The Rollamo 1909, The University Of Missouri School Of Mines And Metallurgy
The Rollamo 1909, The University Of Missouri School Of Mines And Metallurgy
Yearbooks
No abstract provided.
Technical Analysis Of Corn Products, Roy Hayward Dewaters
Technical Analysis Of Corn Products, Roy Hayward Dewaters
Bachelors Theses
"This thesis treats of the technical analysis of the products of corn as used in practical work in the manufacture of starch and glucose. These notes are the results of special investigation carried on along this line"--page 1.
The Influence Of Pyrite On The Oxidation Of Galena, William Newton Clark, Mark Stephen Mazany
The Influence Of Pyrite On The Oxidation Of Galena, William Newton Clark, Mark Stephen Mazany
Bachelors Theses
"In this paper are given: (1) Confirmatory evidence of the influence of pyrite on the rate of oxidation of galena under conditions approximately natural, geological conditions. (2) Detailed description of all the chemical analyses involved"--page 19.
The Oxidation Of Natural Sulphides, Harry Clay Kibe
The Oxidation Of Natural Sulphides, Harry Clay Kibe
Bachelors Theses
"Work upon the oxidation of natural sulphides done at this laboratory indicates that laboratory methods might be successfully employed in seeking explanations of certain actual problems in the theory of ore deposition. This led me to experiment further with galena, sphalerite, and iron pyrite, which work confirms the results of Gottschalk and Buehler, namely, that the course of an oxidation is materially effected when mixtures of sulphides are employed rather than single individual minerals"--page 1.
The Oil Industry Of The Coalinga Field, A. Emory Wishon
The Oil Industry Of The Coalinga Field, A. Emory Wishon
Bachelors Theses
No abstract provided.
Effect Of Certain Minerals On Fire Assay Of Lead, Earl Mccolloch Smith, Rowe Francis Mccrae
Effect Of Certain Minerals On Fire Assay Of Lead, Earl Mccolloch Smith, Rowe Francis Mccrae
Bachelors Theses
"Our problem was to determine the affect in the lead assay of certain minerals commonly accompanying lead ores. The minerals used were calcite, pyrite, blende and chalcocite"--page
A Study Of Some Problems In Assaying, Aaron Max Shah
A Study Of Some Problems In Assaying, Aaron Max Shah
Bachelors Theses
"It is known that the lead button which we obtain from fire assay for silver does not represent the true value of the ore. There is always a loss of silver. To investigate the effect of varying the fluxes on the loss in silver is the object of the first part of this thesis...Silver ores often contain copper, part of which, during the fusion, enters the lead button, causing trouble during cupellation, since it must be done at a high temperature. It is, then, important to keep copper out of the lead button. The presence of litharge in the fusion …
The Effect Of Antimony On The Assay Of Gold And Silver Ores, Herman Carl Hase, Charles Lewis French
The Effect Of Antimony On The Assay Of Gold And Silver Ores, Herman Carl Hase, Charles Lewis French
Bachelors Theses
"Our problem was to determine the effect of antimony in assaying for gold and silver. The method of attack was to find loss of gold and silver: 1) with variable antimony and a constant temperature. 2) with variable temperature and constant antimony"--page 1.
The Effect Of Certain Minerals Upon The Volatilization Of Silver Chloride, Boyd Dudley Jr.
The Effect Of Certain Minerals Upon The Volatilization Of Silver Chloride, Boyd Dudley Jr.
Bachelors Theses
"The work undertaken in this investigation was first suggested in connection with the analytical determination of Silver and Chlorine by weighing silver chloride. Later, however, the experiments assumed a metallurgical character. The final purpose of the experiments was to determine the effect of a few of the common mineral constituents of ores on the loss of silver during a chloridizing roast. In the metallurgy of silver it is frequently necessary to change the silver bearing minerals into silver chloride"--page 1.
The Rollamo 1908, The University Of Missouri School Of Mines And Metallurgy
The Rollamo 1908, The University Of Missouri School Of Mines And Metallurgy
Yearbooks
No abstract provided.
Graphical Representation Of Compressed Air Formulae, John Thomas Vitt, Paul Andrew Philippi
Graphical Representation Of Compressed Air Formulae, John Thomas Vitt, Paul Andrew Philippi
Bachelors Theses
"Air during compression and expansion obeys the same laws as do other gases and these laws have been mathematically stated by purely rational formulae. Most of these formulae are logarithmic and their use involves a considerable amount of work. The object of this thesis is to present these formulae in such form that problems involving their use may be readily and easily solved. It was decided to present them graphically and the accompanying curves are the results of our labors"--page 1.
Design Of A Lead Blast Furnace, Walter Irving Phillips, Andrew Jackson Seltzer
Design Of A Lead Blast Furnace, Walter Irving Phillips, Andrew Jackson Seltzer
Bachelors Theses
"In order to get the approximate size of the Furnace we made the following assumptions, being guided as far as possible by the practice of the Globe Smelting Works at Denver, Colorado whenever that could be ascertained"--page 1.
Analyses Of Limestones And Shales, Byron John Snyder
Analyses Of Limestones And Shales, Byron John Snyder
Bachelors Theses
"The limestones were analyzed to determine their value for cement and lime manufacture, and were taken from several counties in the state of Missouri. Most of the limestones examined were very pure. A considerable quantity of well burned lime is added to other material in the manufacture of cement, a lime of very pure type being the most acceptable in this work"--page 1.
The Rollamo 1907, The University Of Missouri School Of Mines And Metallurgy
The Rollamo 1907, The University Of Missouri School Of Mines And Metallurgy
Yearbooks
No abstract provided.
Analytical Determination Of Copper Products, Charles Dosh Smith
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.
Neutralization Of Free Acid (H₃P O₄) In Commercial Mono-Calcium Phosphate (Ca H₄ (Po₄), George William Harris, Harry Adam Grine
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 Measurement Of The Quantity Of Water Delivered By Meramec Spring, James K. Black, John Owen Ambler
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.
Design Of A Mill For A Cyanide Plant, Charles A. Fach
Design Of A Mill For A Cyanide Plant, Charles A. Fach
Bachelors Theses
"Object. Designing a mill, which according to my ideas, would be the best in practice. The machinery used in practice at the present time, is mostly old style. In this work of mine I have substituted a great deal of lately invented machinery which would give much better and quicker results than the machinery now used. Many ideas have come to me while working on this subject which I think would assist me in any further work on the subject"--page 1.
The Determination Of Aluminium, Victor Hugo Gottschalk
The Determination Of Aluminium, Victor Hugo Gottschalk
Masters Theses
No abstract provided.
Assay Of Copper Matte For Gold And Silver, Walter E. Soest
Assay Of Copper Matte For Gold And Silver, Walter E. Soest
Bachelors Theses
"Ores containing copper, and especially copper matte, have always been very annoying in assaying for the precious metals. In assaying copper matte, and ores containing much copper, by the usual method of scorification, the losses of silver an gold are considerable, owing to the fact that in order to obtain lead buttons, which are soft and free from copper, repeated scorifications are necessary, and moreover it is impossible to obtain lead buttons which are entirely free from copper"--page 1.
Action Of Caustic Hydroxides Upon Aluminum, Herbert Fordyce. Rogers
Action Of Caustic Hydroxides Upon Aluminum, Herbert Fordyce. Rogers
Bachelors Theses
No abstract provided.
Studies In Tellurium, Victor Hugo Gottschalk
Derivation Of Some Empirical Formulae, Showing Relation Between Breaking Strength And Various Functions Which Enter Into Cement Testing, Arthur D. Terrell
Derivation Of Some Empirical Formulae, Showing Relation Between Breaking Strength And Various Functions Which Enter Into Cement Testing, Arthur D. Terrell
Bachelors Theses
"Although we find a great many results of experimental work in cement testing, and some curves plotted, there seems to have been very little attempt made toward fitting equations to these curves. This then leaves an opening for original investigation. During my experiments quite a variety of interesting points have been made manifest. Most of them are of no practical benefit, but merely of interest in themselves. My work has been on a few of the most important ones, which will be given subsequently"--page 1.
White Lead, Evans Walker Buskett