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- Coal mines and mining -- Arkansas<br />Coal-handling machinery<br />Conveying machinery (1)
- Copper mines and mining -- Peru -- Morococha<br />Copper mines and mining -- South America (1)
- Flotation<br />Tailings (Metallurgy)<br />Zinc mines and mining -- Wisconsin (1)
- Geology -- Texas<br />Mercury mines and mining -- Texas (1)
- Gold mines and mining -- Alaska<br />Mining engineering -- Alaska (1)
Articles 1 - 6 of 6
Full-Text Articles in Mining Engineering
Mercury In The Terlingua District Of Texas, William Woodhouse Kay
Mercury In The Terlingua District Of Texas, William Woodhouse Kay
Professional Degree Theses
"Material for this paper was assembled during 1936 when the author, with an associate, studied the Terlingua District and did some actual prospecting and mining in various parts of this district. This paper endeavors to describe mercury mining in the Terlingua District of Texas generally. No attempt is made to treat any of the various aspects of this industry too technically as this is not the purpose of this paper"--Introduction, page iii.
Copper Mining In South America, Charles Kenneth Rose
Copper Mining In South America, Charles Kenneth Rose
Professional Degree Theses
"The Morococha district is situated in the Andes of Central Peru, Department of Junin, four miles east of the crest of the Western Cordillera, which there forms the Continental Divide. The town of Morococha is at an elevation of 14,800 feet and is connected by rail with Callao, the port of Lima, ninety miles to the west, and with La Oroya, the smelting center, thirteen miles to the east. The Peruvian Central Railway ascends from Lima along the valley of the Rio Rimac to Ticlio (15,665 feet) where it tunnels through the Divide and descends the Yauli Valley to La …
How South-West Wisconsin Tailing Piles Can Be Worked At A Profit, Gerald Henry Pett
How South-West Wisconsin Tailing Piles Can Be Worked At A Profit, Gerald Henry Pett
Professional Degree Theses
"It was not until the Flotation Process was introduced in this S.W. Wisconsin zinc district that the writer was convinced that some of the tailing piles here could be worked at a profit. In 1928, the Badger Zinc Company built a 120 ton Flotation Plant about two miles north-east of Linden. It was after the second visit to the plant that the writer learned the above company was making a profit of a 5% zinc ore with very little lead and with a low market price for the finished product, namely $30.00 per ton for a 60% zinc concentrate...the body …
Conveyor Mining In The Thin Vein Coal Fields At Excelsior, Arkansas, Bernard Degen Boyd
Conveyor Mining In The Thin Vein Coal Fields At Excelsior, Arkansas, Bernard Degen Boyd
Professional Degree Theses
"From the results obtained after a year and a half of operation using the long face system of conveyor mining in our thin seam of coal, four decided advantages over the old system of room and pillar work with wide rooms have been proven: 1. Operations are concentrated in small sections, thereby permitting larger tonnages to be loaded. 2. One hundred per cent extraction of the vein is obtained (with the exception of main slope pillars) which prolongs the life of the mine. 3. The ventilation of this gaseous vein is simplified. 4. Production costs are reduced"--page 15.
Sinking And Equipping Inclined Shafts Of More Than 60 Degree Dip, Wilford Stillman Wright
Sinking And Equipping Inclined Shafts Of More Than 60 Degree Dip, Wilford Stillman Wright
Professional Degree Theses
"The advisability of putting down an inclined shaft in preference to the vertical type should be carefully considered before a definite choice is made. One, of course, presupposes the existence of a dipping ore body that is to be prospected or developed for subsequent mining. Unless a vein has been previously developed there is no certainty that it maintains the same degree of pitch for any great distance below surfaces. If straight, the proposed inclined shaft may depart considerably from the downward course of the vein with the result, that, at least some of the anticipated advantages of the shaft …
The Latouche Mining Method As Used At The Alaska Juneau Gold Mine, Willard Alexander Gallemore
The Latouche Mining Method As Used At The Alaska Juneau Gold Mine, Willard Alexander Gallemore
Professional Degree Theses
"The Latouche Mining Method has been used at the Alaska Juneau Gold Mining Company only since 1933, and is used in that part of the mine below the main tramming level. It consists of a series of radiating "long holes" (21 feet) drilled from stope raises, over the back of the stope. These holes break the rock into the stopes, from where it goes through bulldoze chambers to oreways leading to chutes on the No. 10 level. On this level, the ore is drawn into Granby Cars, trammed to the Main Shaft, and hoisted to No. 4 level. On this …