Digital Commons Network^™

The Public Health Engineer's Part On A Health Program, Walter Eric Casey

Professional Degree Theses

"In this work the Public Health Engineer should not be confused with the Sanitary Engineer as the term is commonly used today. The Sanitary Engineer is primarily a designer or builder. He is, in fact, a civil and hydraulic engineer specializing in a rather restricted field, confined for the most part to works relating to municipal water supply and sewage. The Public Health Engineer on the other hand is primarily a student and worker in the field of public health. The range of his activities is wider, and his training and knowledge are of essentially different character. It is not …

Geology Of Mohave County, Arizona, Earl Ross Householder

Professional Degree Theses

"Diamond Creek canyon is located in the eastern part of Mohave County and opens into the Colorado River. Limestones and sandstones of Carboniferous age are abundently [sic] exposed therein"--page 6.

A Study Of The Iodine Content Of Missouri Vegetables And Soils, Charles Jackson Potter

Masters Theses

"Investigations have shown that the iodine content of vegetables, water, and soils has a direct relationship to the goiter incidence of a given region. A few countries, notably New Zealand and Switzerland have made a rather complete survey. In the United States, South Carolina has made the most progress in this direction.

At the present time there are no available records of vegetable and soil analysis for iodine in Missouri. Hunze determined the amount of iodine in waters in Missouri. The connection of his results with the author's results will be seen later.

The present investigation was carried out at …

A Study On Concrete Roads, Joaquin H. Hernandez Barreneches

Bachelors’ Theses

There is hardly an institution in existence that is as old and as useful as the road. In fact, it is so old and we are so used to its usefulness that we seldom think of its origin or its history. We take them more or leas for granted.

A Study Of Concrete Roads, Joaquin H. Hernandez Barrenechea

Bachelors’ Theses

There is hardly an institution in existence that is as old and as useful as the road. In fact, it is so old and we are so used to its usefulness that we seldom think of its origin or its history. We take them more or lees for granted.

Advertising Brochure: The Great Minneapolis Line, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Reglamento Para La Conservación Y Uso De Las Carreteras, República De Cuba. Senado.

Mario Diaz Cruz Pamphlets

At head of title: República de Cuba. Secretaría de Obras Públicas. Negociado de Caminos y Puentes.

The Role Of Geology In Prospecting For Lead And Zinc In The Tri-State District, William Ferdinand Netzeband

Professional Degree Theses

"The present generation has seen many changes in all phases of human endeavor, and the changes which have been made in the extraction of metals from the earth are not the least or these. The application of science to our industries has revolutionized many of them. Today quantity production in our factories is an accepted thing, and in the mines, application of the same principles has made possible the working of the low-grade copper deposits of Utah, Arizona, Chile and Belgian Congo. The mining industry has made use of almost all of the sciences in one form or another to …

Construction Details And General Discussion Of The 10 Watt Radio Telephone Transmitter At The Missouri School Of Mines, Leonard Oliver Williams

Bachelors Theses

"In radio communication it is necessary to have a device to radiate electrical waves and a device to receive electrical waves. Devices used for this purpose are called antennas"--The Antenna, page 1.

The Outdoor Substation, Israel Herrick Lovett

Professional Degree Theses

"The Outdoor Substation, as an essential part of a high voltage distribution system, has been largely developed during the past 12 years. The New England Power Company was one of the pioneers in this development, their substation at Millbury, Massachusetts, being one of the first outdoor substations in the northern part of the country. During the five years' experience with this company, the writer of this thesis, in his position of Chief Electrical Designer, was partly responsible for the design of all substations constructed by the company during this period, from 1916 to 1921...This thesis is an account of the …

Maine Forts, Henry E. Dunnack

Maine Collection

Maine Forts by Henry E. Dunnack, State Librarian.

Foreword by Percival P. Baxter, Govenor of Maine, State Capitol, Augusta - September 1, 1924.

Sections include: Introduction, Fort Machias, Fort Knox, Fort St.George's, Fort Edgecomb, Forts Popham and Baldwin, North and South Sugar Loaf Islands, Fort McClary, Indians and Their Wars, Fortifications in Maine , List of Old Forts.

The St. Johns River Bridge For Duval County, Florida, Enoch Ray Needles

Professional Degree Theses

No abstract provided.

Milling At Cananea, Dibrell Pryor Hynes

Bachelors Theses

No abstract provided.

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 …

Ordinary Meeting, The Panama Canal, The Lock Canal Type And The Straits Of Panama Type, Kentucky Library Research Collections

Research Collections

Article from the Journal of the Society of Arts by M. Philippe Bunauvarilla, Bunau-Varilla helped turn the vote toward choosing the Panama site; he became minister plenipotentiary to the United States. He discusses success and failures in building of the canal.

Process Of Treating Slimes In Ore Reduction, Gustavus A. Duncan

Professional Degree Theses

No abstract provided.

Modern Methods Of Book Composition, Theodore Low De Vinne

Electronic Texts in American Studies

A TREATISE ON TYPE-SETTING BY HAND AND BY MACHINE AND ON THE PROPER ARRANGEMENT AND IMPOSITION OF PAGES

I EQUIPMENT. Types ... Stands .•. Cases ••. Case-racks.

II EQUIPMENT. Galleys and galley-racks ... Compositors' implements Brass rules and cases for labor-saving rule and leads … Dashes and braces ... Leads ... Furniture of wood and ofmeiaI .•. Furniture-racks ••. Quotations and electrotype guards.

III COMPOSITION. Time-work and piece-work •.. Customary routine on book-work ... Justi1lcation ... Spacing and leading Distribution ... Composition by hand and machine

IV COMPOSITION OF BOOKS. Title-page ... Preface matter ... Chapter headings and synopsis ... …

Drainage Of Mines, William Melvin Weigel

Professional Degree Theses

"Before going into the means employed for unwatering a mine, let us consider:--

I. The causes of Occurrence of water in Mines. The drainage of a mine is one of the operations, which, without contributing directly to the output is indispensible in carrying on the work.

By drainage we designate not only the means employed for preventing the influx of water into the workings, but also the means employed of getting rid of what inevitably finds its way into the workings in greater or less quantity.

The water in the mine obtains entrance in various ways.

Sometimes it merely filters …

Aluminum As A Commercial Conductor Of Electric Energy, George Edwin Lyman, Edward J. Morris

Bachelors Theses

"In considering the adaptability of any metal to serve as a distributing agent of electrical energy, the investigation must shape itself along three lines, viz, - the electrical, the physical and the chemical properties which the metal may possess. Evidently a deficiency in any of these properties, if serious, will debar it from successfully coping in the market with its competitors. A metal may have excellent conductivity and its behavior electrically may be thoroughly satisfactory, but if it lacks strength, physically, or ability to resist the destructive forces of the atmosphere, chemically, it is obviously inadaquate sic to serve as …

White Lead, Evans Walker Buskett

Bachelors Theses

No abstract provided.

Coke, Temple Dyer

Bachelors Theses

"Coke in general is applied only to the product got from bituminous coal by driving off volatile matter and cementing the coal into a localities; a small deposit being found near Richmond Va."--page 1.

Producer Gas, Edward P. Dwyer

Bachelors Theses

"Producer gas, so named owing to being produced in special forms of apparatus known as Producers. The fuel is decomposed into combustible gases, whereby most of the C is burnt to CO, whilst the H either remains free, or is converted into carburretted Hydrogen. Directly above the grate carbonic anhydride is formed but thus is rapidly converted into carbonic oxide; reaction as follows: CO₂ + C = 2CO.

Amongst these heavy carburetted hydrogen (C₂H₄) is that which principally increases the value of the gas as fuel and the drier the fuel used the more of the gas is produced. A …

The Cyanide Process For Gold, John C. Reid

Bachelors Theses

"Since the discovery of Cyanogen in the latter part of the 18th century records of many experiments are in existence, showing, that at various periods, exhaustive researches have been made, in which the point at issue was to investigate that property which now constitutes the foundation of what is known to Metallurgical Science of today as The Cyanide Process, vis. The solvent power of alkali cyanides on gold & silver"--page 2.

Mine Opening And Timbering, George W. Cole

Masters Theses

No abstract provided.

Extraction Of Silver By The Wet Way, Justo Garcia Martinez

Bachelors Theses

"The great variety of ores in which silver occurs, usually makes it necessary to employ complicated processes for its extraction.

The extraction of the precious metal admits of two general processes viz. The Dry, and Wet Way and as I have chosen the latter for the subject of my thesis, we will be dispensed with the Dry Way, and will try and give all the processes and forms in which silver is extracted by the Wet Way"--page 1.

A Thesis On The Improvement Of Western Waterways, Fremont Wilson

Bachelors Theses

"There is no subject that falls with the province of the engineer's art, that presents greater difficulties and more uncertain issues than the improvement of rivers"--page 2.

The Metallurgic Treatment Of An Ore For Gold, Silver, Lead, And Copper, William M. Claypool

Professional Degree Theses

No abstract provided.

Common Roads, Arthur Neustaedter

Professional Degree Theses

"The subject of this thesis is on "Common Roads", meaning by "common roads", wagon-roads; which do not include roads with Trackways, as railroads"--page 2.

Inter-Oceanic Transit, Loren X. Smith

Professional Degree Theses

"The feasibility of constructing a canal communication between the Atlantic and Pacific Oceans and crossing the American Isthmus has been discussed and written on since the time of Columbus but the subject has attained its present popularity only within the last few years. For several years past the press has almost constantly kept the project before the public and the indications now are that in the close of the 19th century some one of the many schemes that has been suggested will be in active operation. There has been various routes suggested for canals with and without locks. This paper …

Ore Of Certain Composition, Walter W. Wishon

Professional Degree Theses

The metallurgic treatment of an ore having the following composition:
SiO₂ 20.10
PbS 9.90
ZnS 40.25
CuS 19.75
Sb₂S₃ 4.95
Ag₂S 3.10 or 787.48 oz per ton
Undeter. 1.95
100.00

To obtain the Silver by the Chlorination and Amalgamation process. The discussion of the subject consists of the following sections:
1st Preparation of the Ore
2nd Roasting
3rd Amalgamation
4th Retorting
5th Fusion in the Bars