Engineering Commons^™

The Use Of Carbon Dioxide For Dislodging Coal In Mines, Durward Rice Schooler

Professional Degree Theses

"The coal mining industry prior to 1940, was undoubtedly facing a period when operating economies and efficient utilization of labor, machines and modern practices were more necessary than ever before. With its markets definitely threatened by other sources of heat and power produced with a minimum of labor, "Coal" had to exert every effort to secure the lowest possible production cost and also to produce a more satisfactory product with greater safety to men and mines...Many attempts have been, with various methods, to invent a method of breaking down coal that would fulfill the requirements stated above. In 1924 or …

The Combustion Of Phosphorus, Erwin Charles Hoeman

Professional Degree Theses

"Phosphorus first joined the ranks of large-tonnage industrial raw materials about ten years ago, with the development of the electric furnace method for its production from rock phosphate. For many years before the present era of large-scale production, phosphorus had been little more than a laboratory curiosity. Thereafter, it found extensive application in pyrotechnics, match tips, rat poisons, and other uses not requiring more than a few hundred of tons in a year. Phosphoric acids were generally produced by the reaction of sulfuric acid with rock phosphate. The development and growth of electro-thermal processes for the reduction of rock phosphate …

Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering

CCFSS Library (1939 - present)

I. SCOPE OF THIS REPORT (1) Twenty-six tension tests were carried out on specimens cut from the steel from which the beams of the present series were formed. (2) Two specimens of beam 6 - 3 - 16 were tested in the same manner as described in the preceding report. These are replacement specimens furnished by the manufacturer for two beams damaged in the original shipment. (3) The greater part of the evaluation of the results of all twenty-six beam tests was completed and the entire evaluation will be discussed in the next report.

Drainage As A Factor In The Development And Operation Of A Mine, Peter Paul Ribotto

Professional Degree Theses

"Peele's "Mining Engineers' Handbook" lists six of the more vital factors influencing the method of development and operation of a mine. These are (1) topography, (2) local geology, (3) location and mining of oreshoots, (4) haulage problems, (5) drainage, and (6) ventilation and safety. The purpose of this thesis is to provide a scheme for studying the drainage factor and to show how much a scheme works out in actual practice. Even the casual observer will note the interdependence and interrelationship among the factors listed. So closely tied together are they that the reasonable discussion of an item such as …

Floods Of May 1943 In Missouri, John August Short

Professional Degree Theses

"The year 1943 will be remembered for a long time as a year of great floods in the Middle West. Floods were occurring in some section of Missouri from April to June. The period of highest stream flow in general occurred during the month of May, and it is the May flood to which this paper pertains. It is quite possible that the importance of this flood is not generally recognized. Although everyone realizes that it was a major catastrophe, only planners for the future, particularly designing engineers, can fully appreciate the benefits which will be obtained from the information …

Electroplating Of Chromium Upon A Nickel Plated Magnesium Alloy, Harmel Dawson

Bachelors Theses and Reports, 1928 - 1970

A nickel plating operation for magnesium alloys was investigated and proved successful in plating a small sample of a typical commercial magnesium alloy, Dowmetal J1.

A Study Of The Flow Properties Of Concentrated Clay-Water Mixtures, William Joseph Smothers

Doctoral Dissertations

"The study of flow properties of many substances is of prime importance in varied industries. The ceramic industry is mainly concerned with these measurements on a relatively stiff ceramic body, i.e., one which contains only enough water to retain its shape after the deforming force is relieved.

Various types of instruments have been devised to measure flow properties in the so-called "true plastic range." Since the primary measurements were made on instruments of the transpiration type to devise the laws of viscous and plastic flow, it was felt that an instrument employing the flow of the plastic material through an …

Aircraft Electronic Instrumentation, A. P. Upton

Journal of the Minnesota Academy of Science

No abstract provided.

The System Benzene-Methyl Alcohol : Part Ii. Specific Heats And Liquid Enthalpies., Harvey A. Rothenberg 1918-1980

Electronic Theses and Dissertations

No abstract provided.

Impregnation And Wood Plastics : Ii. Investigations In Marine Glueing., Charles F. Sacra 1921-1985

Electronic Theses and Dissertations

No abstract provided.

Humidity Measurements In Presence Of Water-Soluble Salts., Robert O. Schmitt 1910-1996

Electronic Theses and Dissertations

No abstract provided.

Yeast From Citrus Waste Syrup For Stock Feed : ǂB Ethyl Cellulose Lacquers For Plastic Coating And Ethyl Cellulose Automotive Lacquers., Walter Zabban 1922-1999

Electronic Theses and Dissertations

No abstract provided.

Copper Commando - Vol. 2, No. 9, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...World War II newspaper, production awards, Anaconda Montana, Christmas, fighting fronts, soldiers, Great Falls foundry, contest, missed shifts, smelter, Laboratory Sample Mill

Copper Commando - Vol. 2, No. 8, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...special issue, zinc, Ralph F. Gow, Industrial Services Division, Christmas seals, American Women's Voluntary Services, A.W.V.S., magazines, war program, ammunition, guns, anti-aircraft artillery, tanks, Signal Corps, Chemical Warfare

Cornell University School Of Civil Engineering Tests On Light Beams Of Cold-Formed Steel, Cornell University School Of Civil Engineering

CCFSS Library (1939 - present)

I. SCOPE OF THIS REPORT 24 symmetrical I-beams were tested in bending. They represent 12 different types of beams, with two beams of each type. The beams are formed from two identical channels, furnished with lips on both flanges, joined by bolting in the web. These tests complete the entire series of such I-beams, except for one type (two specimens) which arrived in damaged condition and are now being replaced by the manufacturer.

Copper Commando - Vol. 2, No. 7, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...Navy Nurse Rosemary Davis, South Pacific, Anselmo, Thanksgiving, Anaconda smelter, ore analysis, Sample Mill, Lamp Repair shop, cap lamp, George Hackett, greyhounds, Time Office, Great Falls, Christmas seals

Copper Commando - Vol. 2, No. 6, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...Anthony Mazzolla, World War II, fighting, production problems, underground locomotives, ore, Butte Mines' Electric Shop, Anaconda, AFL, CIO, ACM, George Potter, Geological Dept, Henry Reed Family, butter, Paint Shop, Great Falls

Copper Commando - Vol. 2, No. 5, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue…John F. Mufich, butte miner, Air Force pilot, war views, carpenters, Great Falls, materials, Central Drills Shop Part 2, (Pt.1, see vol. 2, no. 2, pg. 6) Butte, war department, Japs, photos, Mrs. John Donovan, Anaconda, cook, sons, time cards, Anaconda Hill, workers

Copper Commando - Vol. 2, No. 4, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...merit award, Fred V. Lane, Stewart Mine, safety, conservation, war fronts, purchasing, Anaconda, precipitation residue, refinery, Greart Falls, derricks, train operators, planes, copper, reduction works, metal

Copper Commando - Vol. 2, No. 3, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue…Butte salute, copper workers, craftsmen, recognition, awards, parade, miners' union, cavalcade, Gaudalcanal, Harvey D. Howard, purple heart, celebration, soldiers of production, H. O. King, home front, achievements

Copper Commando - Vol. 2, No. 2, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...Women, Barbara Cole, Marjorie L. Wymore, marines, Butte, poster, water, reduction works, orkc drills, repair, war materials, poem, slag, zinc, East Helena, safety, Great Falls, war effort

Copper Commando - Vol. 2, No. 1, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...Army Navy "E" awards, excellence, production, war, metal, calyx drilling, ventilation, mine levels, power plant, Anaconda, steam, compressed air. slag, East Helena, Sal Pinto, meat, copper workers, New Guinea

Copper Commando - Vol. 1, No. 26, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...war effort, copper industry, Montana School of Mines, Anaconda smelter, workers, Butte, underground, production process, Great Falls, furnace

Copper Commando - Butte Labor-Management Issue, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...W. Ellison Chalmers, War Production Drive, pioneering teamwork, Labor-Management Committee, Crafts Unions, American Federation of Labor, absenteeism, Philip Murray, William Green, Sub-committees

Copper Commando - Vol. 1, No. 25, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...Posters of the Week, Sheldon-Claire Co., bushmasters, jungle fighters, Panama, rock drills: stopers, buzzies, drifters, jackhammers; vanadium, hard steel, Clara E. Dahl, Industrial Nurse, platter chatter, lunch, fire firghters, Ab Gray

Copper Commando - Vol. 1, No. 24, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...Wounded, kids, Edith Snediker, fuse threads, gilding metal, Great Falls, shell fabrication, Anaconda garage, production line, Hitler, Hirohito, gals, war effort

Copper Commando - Vol. 1, No. 23, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...Donald M. Nelson, War Production Board, production line heros, East Helena, slag treating plant, Anaconda phosphate plant, food shortage, Miners' Union Day, meat, copper, platter chatter, food, points, Lillian Merritt, machine shop, Butte

Copper Commando - Vol. 1, No. 22, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...Mothers as soldiers, food rationing, shortages, platter chatter, Dorothy Ogrin, Commando Kitchen, points program, phosphate plant, Anaconda, Butte machine shop, mine repairs, reduction works, war bonds

Copper Commando - Vol. 1, No. 21, Special Issue, Victory Labor-Management Production Committees Of Butte, Anaconda And Great Falls

All Issues, Copper Commando, World War II

In this issue...Copper, war, Brehon Somervell, War Department; Copper in: Signal Corps equipment, planes, M-4 tanks, medical equipment, ordnance, PT boats and battleships, second front, materials

Flotation Of A Complex Sulphide Ore Containing Tetrahedrite, James C. O'Dea, Lorimer W. Hoar

Bachelors Theses and Reports, 1928 - 1970

The ore investigated in this thesis is a zinc-copper-lead ore. Microscopic analysis of this complex sulphide ore showed it to contain pyrite_, sphalerite, arsenopyrite, galena, chalcopyrite, tetrahedrite, and covellite, with quartz as the gangue constituent.