Engineering Commons^™

Aluminum, Edward Mackey Johnson

Bachelors Theses

"Ores: Cost of Production: Alloys. It is not the purpose of this thesis to discuss all the ores in which Al is found, but to describe rather fully the ores from which Al is obtained: such as Bauxite and cryolite. In regard to the alloys only the principal ones will be considered and described, especially the Al-bronze which is a very important alloy of copper and Al"--page 1.

Problem For Examination In Metallurgy, Herman H. Schwarz

Professional Degree Theses

"It is required to furnish plans, specifications and estimate for a Flintshire furnace, capable of smelting 2100 pounds of good galena, per shift of 8 hours. Give two drawings showing elevation and plan, drawn to a scale of 1/2 inch to the foot.

Fire brick, red brick and iron to be shown in colors. Estimates must cover both iron and brick work"--Problem to be Solved, page 2.

Production Of Spelter From Calamine, Merritt W. Yeater

Professional Degree Theses

Calamine is one of the most important ores of Zinc and together with the silicates with which it is almost always associated is extensively employed for the production of Zinc. Smithsonite formerly called calamine when pure, consists of Zinc oxide and carbonic acid containing 52 percent of Zinc. It has a specific gravity of 4.2, hardness 4.5m and color is from pale yellow to green.

The silicate when anhydrous called Willemite, contains 58 percent of Zinc, specific gravity 4, hardness 5.5, and color from white to gray or pale yellow.

When hydrous it is called Calamine, specific gravity 3.16 to …

The Ore Knob Copper Process, Oscar Lachmund

Professional Degree Theses

"The works of the Ore Knob Copper Company are situated in the County of Ashe in the north-western part of the state of North Carolina, about ten miles from the Virginia line at an elevation of 4000 feet above the sea.

The works are 45 miles from the railroad, which makes the transportation very difficult. These unfavorable conditions make it necessary for the owners of the mine to smelt their ores and to send to market nothing except the metal, which alone will bear the cost of transportation. The mine was opened previous to 1860, but has only been worked …

Mine Opening And Timbering, George W. Cole

Masters Theses

No abstract provided.

Tunnels And Tunneling, James E. Fulcher

Professional Degree Theses

"A tunnel is defined as a sub-terranean or sub-aqueous way, for purposes of passage. The term is also applied, in mining, to horizontal excavations, such as are commonly called drifts, headings, adits, etc., and used as underground roads, or passages for water or air.

Tunneling, at the present day, has become of such importance, that it is in its-self a profession.

The subject of Tunnels and Tunneling properly treated would require a large volume, but taking into consideration the time and space allotted to the preparation of this thesis, I shall be brief; and in order to treat it to …

Dams And Damming, Jay C. Cullings

Bachelors Theses

"Dams in general may be divided into the three distinctive titles of Coffer Dams, Weirs, and Receiver dams"--page 2.

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.

Leaching Processes For Silver Extraction, Phil Van Frank

Professional Degree Theses

"The leaching process for the extraction of silver are comparatively modern, being introduced in 1849. They belong to a period in which the metallurgist has brought to his aid knowledge derived from chemical research. Under favorable circumstances leaching procedures process many advantages over amalgamation or smelting. For successful use the ores treated for silver must not contain large per cents of lead, zinc, antimony or arsenic. The objections to these bodies will be named later on. When silver is extracted by smelting or amalgamation, a costly plant is necessary, which requires constant repair and in time wear out and be …

Smelting Processes For Silver Extraction, John R. D. Owen

Professional Degree Theses

"The base metals used for the extraction of silver from its ores by smelting are lead and copper, and the different methods employed may be accordingly classified under the general headings of "extraction by means of lead" and "extraction by means of copper"--page 3.

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.

Limes, Mortars, And Cements, Curtis Alexander

Professional Degree Theses

"Lime, calcic oxide, or quick-lime contains 40 parts of the metal calcium and 16 of oxygen by weight and has a specific gravity, depending on its porosity from 2.3 to 3.8. It is a white alkaline earthy substance, quite infusible and is the only oxide of calcium. It is obtained pure by heating pure calcic carbonate to full redness; which expells the carbonic anhydride"--page 1.

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

Professional Degree Theses

No abstract provided.

Stresses In Suspension Bridges, William M. Claypool

Professional Degree Theses

"A suspension bridge is one in which the roadway over the stream or span to be crossed is suspended from chains or wire ropes.

A suspension bridge consists of the towers or piers over which the main chains or cables pass; the anchorages to which the ends of the cables are attached; the main chains or cables from which the roadway is suspended; the suspending rods or chains which connect the roadway with the cable and the roadway.

The sub-structure consists of the foundations, piers &c. The super-structure consists of the roadway and the chains or cables"--page 1.

Interoceanic Canal Projects, Frank W. Wilson

Professional Degree Theses

"The construction of a canal to connect the Atlantic and Pacific Oceans has been discussed since the discovery of the New World and the whole world has only been waiting until some feasible and economical plan should be offered by which this construction could be made.

The narrow neck of land lying between the continents of North America and South America seems especially adapted to this purpose and has for years tempted exploring parties thither to seek for a practicable canal route. Of late years however another scheme has been proposed which surpasses in magnitude and in economy as well, …

The Production Of Spelter As Practiced At The Glendale Zinc Works, Arthur Neustaedter

Professional Degree Theses

"Description of the Zinc Works. The "Glendale Zinc Works" are situated in the southern part of the city of St. Louis, on the line of the St. Louis Iron Mountain and Southern R. R. and among the iron manufacturing districts they are the only zinc works now in operation and produce a large quantity of spelter"--page 2.

Metallurgic Industries Of South Missouri, Philip Gallaher

Professional Degree Theses

"The metallurgic industries of South Missouri consist chiefly of iron, lead and zinc industries. These are widely distributed over the southern counties and in many localities the works are extensive, proving in many cases to be great sources of wealth. In the production of Iron the profit is small. Yet this industry, owing to a growing demand, is steadily increasing"--page 2.

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.

The Systems Of Amalgamation, Floyd Davis

Bachelors Theses

"Mineralogists have shown that gold, with few exceptions, occurs in the metallic state, disseminated in ores or scattered throughout alluvial deposits of old river basins. Silver is quite similar in its occurrence, but it is almost universally found in combination with other elements. The means in which these metals occur forms a large factor in determining the most economical and efficient systems of metallurgical treatment"--page 1.

Hydraulic Mining, Arthur Neustaedter

Professional Degree Theses

Hydraulic-mining has undoubtedly its origin in America and principally in the west, when gold was found in 1848 it was imbedded in strata of clay, land and gravel, the question arose how should we get it out of the clay and etc.? and here is the origin of hydraulic-mining. First there was used the simple “pan”, then something better was found, the “cradle,” and then it came to the “tom”, “sluice” and lastly to “hydraulic mining”, all of these come under the head of hydraulic-mining, but the last which bears that name is resorted to only in situations where the …

Patenting Mining Claims, William R. Painter

Professional Degree Theses

"In patenting mining claims there are two sets of papers used"--page 3.

Tunnels, Ashnah B. Schrantz

Professional Degree Theses

No abstract provided.

Turbine Wheels And Water Power, Herman N. Van Devander

Professional Degree Theses

"A turbine water-wheel is one through which the water passes guided by channels either interior or exterior to the wheel its self and the walls of these channels or guides as they are termed, are placed in such positions, as to impinge the water on to the blades or wheel buckets at such an angle as will insure the greatest efficiency. The guides and buckets are usually curved in opposite directions, and are so placed with regard to each other, that the water enters the wheel with the least possible shock and leaves it with the least possible velocity. Turbines …

The Metallurgic Treatment Of The Iron Ores Of Southwest Missouri, Beauregard Ross

Professional Degree Theses

I can say nothing new upon the subject of the Metallurgy of Iron. The science has approached such a degree of perfection that very little, if anything, has been left to be said. The attention of the modem metallurgist should be devoted to the mechanical contrivances which will enable him to manipulate the work of his men to the best advantage rather than to an improvement in the process”—Introduction, page 6.

The Metallurgic Treatment Of Lead Ores As Carried On In South-West Missouri, Frank W. Gibb

Professional Degree Theses

No abstract provided.

Imaginary Functions, Floyd Davis

Bachelors Theses

"The imaginary expression which occurs in common Algebra, and in all the higher departments of mathematical science, has been one of the most perplexing problems which the human mind has encountered in any age. It was studied by the early mathematicians and became a field of speculation, but developed no marked results, for it was generally considered algebraically and in the interpretation is a symbol of an impossible operation. But many of the problems arising from algebraic-geometrical analysis involving imaginaries was of such importance to mathematical and physical science that great attempts were made to establish their solution. It was …

Proposed Bridge Over Gasconade River, Frank W. Gibb

Professional Degree Theses

"This scheme for a bridge over the Gasconade River is presented as a thesis for the degree of Civil Engineer."--page 1.

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

Location, Construction, And Drainage Of Common Roads, Edward B. Summers

Bachelors Theses

To write upon, and do justice to the subject of common roads, it is necessary that one should be familiar with every variety of them. The roads in some of the advanced and highly civilized communities are of a most admirable character; while in the new and thinly populated countries, they are found deficient in nearly all the attributes of good roads. Only a few kinds that may be in some of the most populous districts will be here designated.