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(Tech/structures/underground/tunneling:LA-5210-MS) Hanold, R.J.: Large Subterrene Rock-Melting Tunnel Excavation Systems; A Preliminary Study. Los Alamos Scientific Laboratory (LASL). February, 1973. 35 pages. Electronic master; price based on download or delivery on CD; see Options below for paper copies, binding. Price: $3.80
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