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Design Of A 240' Through Span Railroad Bridge: Including Analysis Of Stresses Due To Concentrated Wheel Loads, Design Of Individual Members, And Drawings Showing Stresses, And Details, L. C. Torrence

Bachelors Theses

"The Span length will be 240' center to center of end pins. Truss to be square ended, Track straight. Live load to consist of two engines, concentrating 289 tons over a length of 104' followed by a uniform train of 2.1 tons per linear foot"--Page 1.

Hydraulic Separation, Albert Edwin Eardley, John Simpson Cameron

Bachelors Theses

"Before beginning a discussion of the various experiments performed with the hydraulic separators in the Laboratory of the S. of M., a brief statement as to the principle upon which their working depends, and their functions in the dressing of ores should be given. The crude ore when first delivered from the mine is usually not of sufficient richness to be economically handled by the smelters; it therefore becomes necessary to eliminate as far as possible that part of the ore which is of no material value, and among the various forms of apparatus now in use for this purpose …

Contact Plane Concentration, John A. Rogers, George Walter Dean

Bachelors Theses

"Contact plane concentration depends upon the principle that a thin sheet or film of water flowing over a plane surface may be so adjusted that its quantity and velocity are just sufficient to bear away the lighter particles of gangue, leaving behind only the heavier particles of the mineral to be concentrated, adhering by friction to the plane, the concentrates being removed by any convenient method. Thus we see it is best adapted to the concentration of minerals having widely differing specific gravities but may be used for the concentration of all ores and minerals with any specific gravity whatsoever"--page …

Water Supply Of Rolla, Missouri, Perry B. Anderson, Felix John Kersting

Bachelors Theses

"An essential feature of a prospering town is a system of water supply, to protect property from losses by fire and to furnish water for domestic use. Rolla, a town of about fifteen hundred inhabitants, is without a proper water supply, in consequence of which it has suffered many losses to property, which could have been averted, or at least diminished, had the proper protection been at hand. At present the only fire protection the business part of town has, is derived from one large cistern placed on the principal street, while the protection for the residence portion, is derived …

1897 Matthew B. Sellers Diary, Matthew B. Sellers

Matthew B. Sellers Dairies

1897 diary of Matthew B. Sellers.

Limitations Of Sizing In Concentration, Walter G. Martin

Bachelors Theses

"All ore reaching the mine mouth consists of two portions, the portion containing the mineral which is valuable, and the gangue or worthless portion. The ultimate object then of concentration is the complete separation of these two portions and in the cases when more than one mineral exists with the gangue, to separate the different mineral products from each other"--page 4.

Mineral Land Survey, Claude D. Grove

Professional Degree Theses

"Field notes of the survey of the mining claim of the Sylvanite Gold Mining company known as the Ready Cash, Gold Bug, Shamrock, Midland and Cyclone Lodes, Cripple Creek Mining District, El Paso and Fremont County, Colorado"--page ii.

Jackscrews, Albert Lewis Kenyon

Student and Lippitt Prize Essays

Definition, development, and description of the jackscrew, a device for the application of the screw to the moving of heavy weights.

1896 Matthew B. Sellers Diary, Matthew B. Sellers

Matthew B. Sellers Dairies

1896 diary of Matthew B. Sellers.

The Conservation Of Soil Moisture By Means Of Subsoil Plowing, T. L. Lyon

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Covers the conservation of soil moisture by means of subsoil plowing.

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.

Crushing Machines, Samuel J. Gormly

Bachelors Theses

"Crushing machines may be divided into: crushers, rolls, and pulverizers. Ore as it comes from the mine is usually in larger lumps which require breaking up preparatory to the subsequent treatment it may receive. For this purpose mechanical means must be employed, and the following pages are intended as a rational treatment of the most approved methods, in ore crushing at the present day"--page 1.

The Effects Of Temperature Upon Cement Mortar, Herman C. Cowen, Phillip Florreich

Bachelors Theses

"Probably no material in use by the Engineering profession at the present time has been subjected to more careful and rigid tests by expert Engineers than our hydraulic cements, both natural and artificial. While the manufacturer and use of cements in America is of comparatively recent origin, this industry is fast assuming enormous proportions, and the use of cement is fast displacing many of our more common building materials. Its use in our more important structures has created an increasing demand for the best quality of cements, and the manufacturers have not been slow to comply with this demand"--page 1.

A Complete Design Of A 210 Foot R.R. Bridge, John Edward Kirkham

Bachelors Theses

"I have divided the subject into two division, viz. Part I and Part II. Part I treats of the maximum stresses and the methods employed in finding them. Part II. treats of the design of the members to resist the stress"--Preface, page ii.

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 …

1895 Matthew B. Sellers Diary, Matthew B. Sellers

Matthew B. Sellers Dairies

1895 diary of Matthew B. Sellers.

Designing Wire-Rope Tramways, George W. Herdman

Professional Degree Theses

"Tramways are divided into two systems viz.: the Bleichert system and the Hodgson system.

The Bleichert System: In this system the cable is fastened to the supports by means of clamps, and the loads travel on this cable.

The loads are attached to an endless rope or cable which passes around a wheel located at each terminus of the line, one of which is revolved by an engine if the incline is not steep enough so that gravity will produce motion"--page 2.

Determination Of The Hydraulicity Of Local Lime-Stone, Claude D. Grove

Bachelors Theses

"I took as the subject of my thesis the hydraulic properties of the Lime Stone of this vicinity and confined my researches to two of the larger Lime Stone Quarries about one mile South West of Rolla"--page 1.

How Electricity May Be Used To Operate Machinery, John Franklin Knowles

Student and Lippitt Prize Essays

Explores the uses of electricity in a machine shop in shifting from belt and shaft systems to the use of electric plants.

On The Fire Assay Of Gold, Silver, And Lead, Claude D. Grove

Bachelors Theses

No abstract provided.

Steam Boilers, George Clarence Ammonds

Student and Lippitt Prize Essays

Describes the varied types of steam boilers, their construction and care.

1894 Matthew B. Sellers Diary, Matthew B. Sellers

Matthew B. Sellers Dairies

1894 diary of Matthew B. Sellers.

Russell's Lixiviation Process For Silver Ores, Frank L. Tyrrell

Professional Degree Theses

"It has long been known that there are many ores worked in which a large per cent of silver and gold are continually lost, either in tailings or slimes. As far back as 1848 Dr. Percy suggested the extraction of silver from argentiferous ores, by its conversion into the chloride. The chloride was treated with sodium hyposulphite"--Russell's Process, page 1.

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.

1893 Matthew B. Sellers Diary, Matthew B. Sellers

Matthew B. Sellers Dairies

1893 diary of Matthew B. Sellers.

Proposed Water Works For Rolla, Frank L. Tyrrell

Professional Degree Theses

No abstract provided.

A Concrete Culvert, Fayette Alexander Jones

Professional Degree Theses

"Before entering into the especial subject for which this paper is intended, it is, perhaps, best to give a few prefatory remarks, as to what Concrete really is, the method and manner of its formation and it application in foundations and engineering structures.

Concrete may be defined as a species of artificial stone.

Its ingredients may be classified into two parts, viz:

First, the matrix which is either lime or cement, or a mixture of both.

Second, the aggregate consisting of small broken stone gravel, broken bricks, shells, etc"--A Concrete Culver, page 1.

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.

1892 Matthew B. Sellers Diary, Matthew B. Sellers

Matthew B. Sellers Dairies

1892 diary of Matthew B. Sellers.