Engineering Commons^™

The Extraction Of Manganese From Manganese Flue Dust., John Raymond Moore

Bachelors Theses and Reports, 1928 - 1970

It is estimated that 90 to 95% of the world’s consumption of manganese is used in the steel industry in the form of either ferromanganese or spiegeleisen. The remainder is used in the form of either salts or oxides, chloride, dioxide and monoxide.

A Study Of The Effect Of Oxygen On The Rate Of Dissolution Of Gold In Cyanide Solutions., John A. Cook

Bachelors Theses and Reports, 1928 - 1970

The accepted chemical reactions in the dissolution of gold by cyanide solutions require the presence of gold, cyanide, water, and oxygen. The importance of dissolved oxygen in cyanide solutions as a factor is recognized by those familiar with cyanidation. Manufacturers of cyanidation equipment realize the necessity of oxygen, as shown by the appliances they have developed which are attached to the agitators in order to saturate the cyanide solutions with air.

The Control Of The Grain Size Of Zinc, Oswald J. Wick

Bachelors Theses and Reports, 1928 - 1970

The use of zinc as a structural metal has been militated against by two of its properties, namely, its low tensile strength and its susceptibility to grain growth. The importance of these factors can be appreciated when it is realized that the tensile strength of coarsely crystalline cast zinc is 4,000 pounds per square inch, while finely crystalline cast zinc has a tensile strength of 12,000 pounds per square inch.

Contact Metamorphism In The Highlands, Frank Trask Jr.

Bachelors Theses and Reports, 1928 - 1970

On the southern margin of the Boulder Batholith, about twenty miles south of Butte in the Highland Mountains, there are many miles of contact between the igneous and sedi­mentary rocks. As two kinds of igneous rocks and many diff­erent kinds of sedimentary rock are present, it is an excell­ent place for the study of contact metamorphism.

A Preliminary Study Of Montana Copper - Nickel Ore, J. Argall Mcallister

Bachelors Theses and Reports, 1928 - 1970

Deposits of sulfides_, containing nickel and copper with associated platineferous minerals occur in the Stillwater Igneous Complex. This is a group of unusual igneous rocks situated in Stillwater and Sweetgrass counties in Montana.

Geology And Ore Deposits Of The Golden Era And Goldfinch Mines, Argenta Mining District, Montana., Glenn C. Johnston

Bachelors Theses and Reports, 1928 - 1970

This report includes the results of geological investigation of a small area in the northern part of the Argenta mining district. Approximately two square miles were mapped. The underground working of the three mines only were accessible: the Goldfinch. Golden Era, and Mayday mines.

The Effects Of Lime On The Amalgamation Of Gold., Rollien R. Wells

Bachelors Theses and Reports, 1928 - 1970

An amalgam is an alloy of mercury with other metals, and amalgamation is the art of making or forming amalgams. In metallurgical language the word is limited to the means adopted for the recovery of gold and silver from their ores by the use of mercury.

Geology Of Some Gold Deposits Of Montana, Leo Edwin Efraimson

Bachelors Theses and Reports, 1928 - 1970

Gold is one of the rarer metals in nature, and chemically it is one of the most inactive. Gold forms stable, natural compounds with few other elements, and only with metals.

Small Scale Mining Possibilities In Southeast Missouri, William Walbridge Weigel

Professional Degree Theses

"The disseminated lead ore bodies of St. Francois County in southeast Missouri are known for their enormous size and even grade over large areas. Several of these ore bodies are over a mile long by a quarter mile wide. They have been worked on a commensurate scale. The smallest mill in the district, at Bonne Terre, now treats 2,500 tons daily capacity. Each of these mills is supplied by a single ore hoisting shaft. The disseminated ore district of St. Francois County is bounded by the Big River-Bonne Terre fault on the north and west, by the Simms Mountain fault …

A Treatise On The Use Of Insulating Refractory Brick In Malleable Annealing Ovens, James Joseph Offutt

Professional Degree Theses

"At frequent intervals, there is developed in the refractory field some product which serves to keep this branch of industry in line in the fast moving modern era. The advent of such materials as high temperature mortars and high alumina, super refractories provided a definite mark of progress. One of the most recent and far reaching developments was made possible by the perfection of light weight, insulating fire brick. This product filled a gap which had long been an aching void to all who had made a careful study of furnaces in an effort to obtain higher efficiency. Formerly, it …

The Problems Of The Silver Dyke Mine, Dale Irwin Hayes

Professional Degree Theses

"In a newly conceived mining enterprise serious operating problems may remain concealed until encountered in the actual early operating period of the property. The major problems of the Silver Dyke Mine were of this nature. This mine is the property of the Silver Dyke Mining company, a subsidiary of the American Zinc, Lead and Smelting Company. It is situated about five miles from Neihart, Montana. A three-and-one-half-mile trucking road connects the mine with a railway siding. The property is in the Little Belt Mountains, at an elevation of about seven thousand feet. The climate is severe, the winters long, and …

Roofing Granules, Morris Harold Grober

Bachelors Theses

"An abundant amount of chats and clays of various kinds is available in Missouri. In the mining districts of south-eastern and south-western Missouri enormous piles of gang known as chats have accumulated. The mining companies desire to rid themselves of this accumulation and would dispose of the chats at a very low price. In northern Missouri and in the diaspore district of central Missouri suitable clays could be found which may be had for a small royalty, mining and transportation costs. Some of the requirements for roofing granules are that they have (1) a size limited by 10 and 30 …

The Use Of Phosphoric Acid As A Pickling Reagent For Enamels, Alan John Hoener

Bachelors Theses

"A review of the available literature reveals that no one has used phosphoric acid for pickling sheet steel for enameling purposes. Articles have been published indicating the corrosive action of phosphoric acid, but these investigations were carried out in an attempt to find an alloy that would resist the corrosive action of the acid"--Introduction, page 1.

Drilling For Placer Deposits Of Gold And Platinum In The Jungles Of Colombia, Theodore Owen Seiberling

Professional Degree Theses

"In the following report I have made no attempt to "white-wash" or to exaggerate conditions as I found them in the Choco. In plain language I have endeavored to give the reader a picture of the obstacles met, and overcome by the engineer in his search for placer deposits of gold and platinum with the prospect drill in the jungle"--Foreword, page 1.

The Effect Of Ammonium Carbonate And Aluminum Chloride On The Porosity Of Refractory Material, William Gail Twyman

Bachelors Theses

"At the present time there are many insulating materials on the market. The temperatures at which these may be utilized vary from the lower temperature range of 100 degrees C, to a high temperature range of 2800 degrees C. Those insulating materials falling in the class of low temperature insulators have very little usage in commercial manufacturing processes therefore they will not be discussed in this paper. Materials that have a range from 600 degrees C to 2800 degrees C are of vital importance to the manufacturing processes. It is this type of material which we will endeavor to discuss …

The Suitability Of An Electric Glo-Bar Furnace For The Hot Load Test On Refractories, Paul Curtis Branstetter

Bachelors Theses

"This investigation was carried out to determine, if possible, the suitability of the Glo-Bar furnace for the hot load test by comparing results obtained with the standard furnace with those obtained on the Glo-Bar furnace on different brands of refractories"--Scope of Investigation, page 2.

The Use Of Fluorspar As A Flux Ingredient In Ceramic Bodies, Edward Henry Frauenfelder

Bachelors Theses

"The term "flux" is a relative one and does not refer to any particular class of substances. A flux is any material which will lower the softening, fusion, or liquifying sic temperature of another Bases act as fluxes to siliceous substances while in basic compositions like Portland cement, silica is a flux. Feldspar is a flux for white ware mixtures, and is regarded as a refractory in the low temperature enamels. Although fluorspar is used in considerable quantities in many divisions of the ceramic industry, namely: the glassware division, the enamels division, and in the manufacture of cement, its use …

Red Glazes, Robert M. Springer

Bachelors Theses

"The object of this study was to produce a commercial red glaze at cone 3 from a base glaze of colemanite and steatite"--Scope of Investigation, page 3.

A Metallographic Study Of Primitive Copper Work., John A. Alley

Bachelors Theses and Reports, 1928 - 1970

The field of archaeology and that of metallurgy appear to be widely separated and in no way related. Work done in recent years, however, tends to show that, in many ways, the metallurgist can supplement and enhance the information gain­ed by the archaeologist, at least in regard to those objects which have been made of metal.

Studies On The Production Of Direct Consumption Sugars In Louisiana., Arthur George Keller

LSU Historical Dissertations and Theses

No abstract provided.

Test 253: Caterpiller Model Rd-7 (Diesel) 61 H.P. At 850 R.P.M., Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 254: Caterpiller Model Rd-7 (Diesel) 69 H. P. At 850 R. P. M., Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 250: Silver King 3-Wheel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 255: Caterpiller Model Rd-7 (Diesel) 1000 R. P. M., Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 257: Caterpiller Model Rd-8 (Diesel) 1000 R. P. M., Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 262: Cletrac Model Fg, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 263: Cletrac Model Fd, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 261: Cletrac Model E, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 266: Massey-Harris Pacemaker, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 264: Farmall F-20, Nebraska Tractor Test Lab

Nebraska Tractor Tests

EXPLANATION OF TEST REPORT: Farmall F-20

TEST A: The manufacturer's representative operates the tractor for a minimum of 12 hours using light to heavy drawbar loads in each gear.

This serves as a period for limber up, general observation and adjustments. Adjustments that are permissible include valve tappet clearance, breaker, point gap, spark plug gaps, clutch and others of a similar nature. No new parts or accessories can be installed without having mention made of it in the report. No data' are recorded during this preliminary run except the time that the engine is operated.

BELT HORSEPOWER TESTS

TEST B: …