A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mining by the top-slicing method, with some notes on sublevel caving
Method used at underground mines on Mesabi Iron Range in Minnesota, and in some mines on Vermilion and Cuyuna Ranges in Minnesota and Marquette and Menominee Ranges in Michigan.
Mining by the top-slicing method, with some notes on sublevel caving
Method used at underground mines on Mesabi Iron Range in Minnesota, and in some mines on Vermilion and Cuyuna Ranges in Minnesota and Marquette and Menominee Ranges in Michigan.
Mining by the top-slicing method, with some notes on sublevel caving
U. S. Bur. Mines -- Information Cir
Jackson, C.F. (author)
1931
51 pages
32 Figs. on supp plates, Bibliography
Report
English
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