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Yieldable steel arches and yieldable steel ring supports in metal mines
Mining method, technique, and cost of presplitting the flood control gate shaft, Littleville Dam, Huntington, Mass.
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Published Year
1960-1969 (2)
Subject
Mining engineering (2) *
Metal arches (1)
Shaft sinking (1)
Author
Eilertsen, Nils A. (2) *
Paine, Rolf S. (1)
