A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Notes on operations of Phelps Dodge Corp in Arizona; porphyry deposit contains about 21 lb of copper per ton; removal of 42,000,000 tons overburden is about 45% complete; historical outline; 30-yr plan for mining 230,000,000 tons ore involves investment of $30,000,000; milling equipment being tested; details of equipment and practice.
Notes on operations of Phelps Dodge Corp in Arizona; porphyry deposit contains about 21 lb of copper per ton; removal of 42,000,000 tons overburden is about 45% complete; historical outline; 30-yr plan for mining 230,000,000 tons ore involves investment of $30,000,000; milling equipment being tested; details of equipment and practice.
Development of Morenci open-pit mine
Min J (Phoenix, Ariz)
Hoagland, J. (author)
1940
2 pages
Article (Journal)
English
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