A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mining methods and asbestos mill flowsheets; deposits scattered over 2000 mi; asbestos occurs in thin, discontinuous veins and only in areas where intrusions of diabase are adjacent to or crosscut favorable units of pre-Cambrian Mescal limestone; in average mine, production of 1 ton of commercial asbestos requires removal of 30 to 40 tons of waste rock.
Mining methods and asbestos mill flowsheets; deposits scattered over 2000 mi; asbestos occurs in thin, discontinuous veins and only in areas where intrusions of diabase are adjacent to or crosscut favorable units of pre-Cambrian Mescal limestone; in average mine, production of 1 ton of commercial asbestos requires removal of 30 to 40 tons of waste rock.
Chrysotile-asbestos deposits of Arizona
U S Bur Mines -- Information Cir
Stewart, L.A. (author)
1955
124 pages
Report
English
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