Digital Commons Network^™

An Investigation Of Blended Cements, Byron Lee Ashdown

Bachelors Theses

"It is generally accepted to be a fact that the coarser particles of a cement are practically inert, and that it is only the finest particles that possess the cementing qualities. Exactly what percentage of the whole is active, or possesses the cementing properties, is not known. Since but few experiments pertaining to such have been performed there is consequently little data to be found"--Introduction, page 3.

Modern Phases Of The Rule Against Perpetuities And Restraints Upon Alienation Applied To Entrusted Properties In The State Of California, Adolph Canelo

Student Theses

There is perhaps no legal subject more interesting nor important in the sphere of trust activity than the so-called "Rule against Perpetuities". This rule is colorful in its historical antecedents, and in its present form, as part and parcel of the common law, is the creature of necessity evolved to prevent property owners from placing their property perpetually beyond the reach of their descendants, or other beneficiaries. The doctrine compromises the conflict between those on the one hand who have amassed property, and who ftesire that the succeeding generations might enjoy the use and benefit thereof without possibility of the …

Transformer Connections, Frank W. Burns

Theses and Dissertations

No abstract provided.

The Use Of Red Lake As A Storage Reservoir, Herman F. Wolff

Theses and Dissertations

No abstract provided.

Sparking Potentials At High Frequency, Harry J. Read

Theses and Dissertations

No abstract provided.

Correlation Of Certain Characters In Ears Of Moody County White Dent Corn, Jens L. Bolland

Electronic Theses and Dissertations

The idea has been prevalent that the most cylindrical ears of corn have the largest percentage of corn on them, and it has been the purpose of this study to determine the correlation coefficient between the degree of taper and the percentage of shelled corn on ears of Moody County White Dent.

Creole Folklore In Phonetic Transcription., Adams Shelby Holmes Trappey

LSU Historical Dissertations and Theses

No abstract provided.

Design Of A Wooden Roof Truss Materials, William Herman Meyer

Bachelors’ Theses

No abstract provided.

The Greek Contribution To The English Romantic Movement, Amanda Louise Zabel

Theses and Dissertations

No abstract provided.

The Diplomatic Relations Between China And Japan Since Russo-Japanese War, Yu M. Chen

Graduate Thesis Collection

The relations between China and Japan in a political or diplomatic sense are only of modern origin. During long centuries the dealings between these two countries were very unimportant, if not non-existent. Nippon, in the first instance, had borrowed from the Middle Kingdom of her literature, her arts, her fashions and her philosophies.

The School As A Social Center, Carl Gilbertson

Theses and Dissertations

No abstract provided.

A Possible Water Power Development On The Cannon-Ball River, Vernon H. Sprague

Theses and Dissertations

No abstract provided.

State Roads, Howard R. Flint

Theses and Dissertations

No abstract provided.

Economic Principles In The Valuation Of Public Utilities For Rate-Making And Purchase, Edgar H. Gustafson

Theses and Dissertations

No abstract provided.

Some Chemical Problems In Geology, Reginald Scott Dean

Masters Theses

"This thesis is in the main a compilation of the views held at this institution in regard to the problems discussed as interpreted by the author. No claims for originality are made except in the manner of presentation as the material used has been obtained by conference and class room work with Professor V. H. Gottschalk and Professor G. H. Cox and also to some extent with H. A. Buehler, State Geologist. On the other hand the material is an expression of these ideas as assimilated by the author and hence may in certain cases differ radically from the views …

A Study Of A Certain Filled-Sink Ore Deposit, Azmon Thurman Dunham

Bachelors Theses

"This mine, which is located about 3-1/2 miles southeast of Sullivan in the extreme northeast corner of Crawford County, Mo., was first known as the Sullivan and Bridoll Mine of the old Hamilton Iron Company. It has been operated discontinuously since about 1870. Until 1904 it was worked solely as an iron mine, but at that time development work for copper was started, and from 1905 to 1909 to mine treated only this metal. It is not known how many pounds of copper the mine has produced, but during one 20 day run in 1904 of which there is record, …

Pneumatic Ore Concentration, Robert Winters Johnson, Walter William Weissbach

Bachelors Theses

"The concentration of lead and zinc ores by means of air is practically an unexplored field, although the subject is by no means a new one. Considerable research work has been done and several methods, processes and machines have been developed, but little or nothing has been accomplished towards making air separation a success. the lack of success has been due mainly to two reasons:- (1) That very little has been known about the internal conduct of air currents, and (2) that nearly all methods and machines so far worked out have presupposed the fact that the ore to be …

Flotation Applied To Silicate Sludge, Yaro Klepel, Greene Erskine

Bachelors Theses

"Within the past few years great success has been made of the flotation of sulfids, and to a certain extent of carbonates.

Since sulfids are easily recovered by flotation it seems practicable that silicates could be made to float by first sulfidizing them, and then subjecting them to ordinary flotation treatment.

This problem involves the treatment of a silicate sludge obtained from the Joplin district, the sludge will easily pass through a 250 mesh screen. At the present time this sludge is being sent to the tailings pond.

The experimental work of this thesis was done along the line of …

Leaching Flue Dust, Edwin Alexander Kayser

Bachelors Theses

"The usual method of treatment has been to charge the "flue dust" into reverberatories and smelt it with the regular charge of calcined ore. There was a consequent cost of handling and a serious loss thru furnace draft and boiling, due to the fine state of division of the material and the presence of sulphates, acid, and moisture.

The object of the paper is to treat this material by some leaching process, which will eliminate the above enumerated losses, and at the same time present the finished product at a lower cost, and with a higher extraction per ton, than …

Mining Methods Of The Calumet And Arizona Mining Company, Warren District, Cochise County, Arizona, James Lawrence Head

Bachelors Theses

No abstract provided.

The Development Of A Copper-Silver Ore Body, Colwell Arba Pierce

Bachelors Theses

"During the years 1912 to 1915 the writer had charge of the Ruby Copper Company property near Patagonia, Arizona, and it was suggested that a review of this work, with costs and data, would be helpful to other engineers engaged in similar enterprises"--Introduction, page 2.

Report On The Lucky Bill Mine, Bayard, Grant County, New Mexico, Walter Gammeter

Bachelors Theses

"The Lucky Bill Mine is located, with reference to the Mining Districts of the State of New Mexico, in what is known as the Central Mining District. The Central Mining District includes the Sant sic Rita and Hanover regions in the north and eastern portions and camps within a radius of about six miles about the town of Central in other directions. The mining districts bounding the Central District are on the north the Georgetown District, on the west and south the Silver City District and on the east the Hillsborough District"--Location of the Mine, Page 1.

A Study For Comparative Costs Of Flat, Short Span, Concrete Steel Highway Bridges, Thomas Purcell Mccague

Bachelors Theses

"The importance of steel in the construction of long span highway bridges is well understood, but it's cost and the constant heavy maintenance charges, or it's rapid deterioration, if not properly maintained, have caused builders of bridges to seek some other material, which is low is first cost and which will not require constant painting. Se we consider concrete and concrete steel"--page 2.

Design Of A Concrete-Steel Highway Bridge For Dry Fork Crossing, Salem Road, Phelps County, Mo., Edward V. Damotte

Bachelors Theses

No abstract provided.

Oils And Flotation, Clarence Eugene Peterson, Charles Yancey Clayton

Bachelors Theses

"We know that the sulphides, or minerals with a metallic lustre, can be floated either with or without oil and that the carbonates, silicates, etc., cannot be floated so readily. Why do certain oils have the power of selecting certain minerals? Why do certain oils produce froth? Why do certain oils give a watery froth? Why do some give an ephemeral froth and others a tough one? Of the thousands of oils known, only a few classes have found successful application in this new process...This leads us to the question, what property or combination of properties make oils valuable as …

The Flotation Of A West Joplin, Mo. Slime, John Stone Hoffman, James Joseph Dowd

Bachelors Theses

"Owing to the high price of zinc and the success attending flotation in other districts, intense interest was aroused in the flotation of slimes of the South-West Missouri District. These slimes are the accumulation of the finer particles of the ore during the milling process and their metallic content is generally higher than that of the original ore. They have been disposed of, in the past, by sluicing them to the tailings ponds because no economical method of saving the zinc had been discovered. The object of our experiments was to economically extract from these slimes, by flotation, a product …

Leaching Experiments On An Arizona Copper Ore, Gunnard Edmund Johnson

Bachelors Theses

"The object of this thesis was to obtain a general knowledge of the problems to be solved in leaching a typical carbonate copper ore or oxidized capping of the New Cornelia Copper Co.'s ore. The experimental work previously performed far exceeds any that might be attempted in the short time allotted to this work, and the few results obtained indicate that the ore is particularly favorable for leaching"--Scope of Thesis, page 1.

The Effect Of Temperature Upon The Crystal Size And Physical Properties Of Iron And Steel, Earl Joesting Mcnely

Bachelors Theses

"This investigation was deemed of sufficient merit to require the work of two terms. It naturally is divided into two parts, i.e., the effect that temperature has upon the crystal size; and the effect that temperature has upon the physical properties of iron and steel"--page 3.

Notes On The Development Of The Flotation Process For Concentrating Copper And Iron Sulphide Ore, Holman Thompson Marshall

Bachelors Theses

"The first flotation machines was installed at the Magna Mill of the Utah Copper Co. in August and September, 1914. The outbreak of the war in Europe having made necessary the shutting down of the Arthur Mill of the same company, the flotation plant was installed at Magna for the purpose of carrying on experiments which had been in process at Arthur. Enough experimentation had been done with the small laboratory machine at Arthur, and results obtained were favorable enough to warrant the installation of a full size Janney machine"--page 1.

Problems In Flotation, William Henry Mccartney

Bachelors Theses

"Little has been done to classify oils on the basis of their action as flotation agents, either for their frothing or their selective qualities...This investigation was undertaken chiefly to aid in effecting such a classification"--page 3.