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High speed projectile impact for mining and tunneling - Project REAM.
Watson JD; Lundquist RG
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, Contract H0232052, 1974 Jan; :1-93
Results of extensive field tests of a new and powerful method of hard rock excavation are presented in this report. The method, known by the acronym ream (rapid excavation and mining), employs high velocity, smooth bore cannons to efficiently deliver energy to the rock, and it has been demonstrated for underground tunneling, drilling, surface benching, scaling, and secondary breakage in hard granitic rock at the Hope Valley Mine test site in California.
Tunneling; Excavation; Rocks; Breaking; Hypervelocity projectiles; Guns; Ordanance; Firing tests; Fragmentation; Boreholes; REAM project; Rapid excavation and mining; Hope Valley Mine
CP; Final Contract Report
NTIS Accession No.
OFR 125-77; Contract-H0232052
High speed projectile impact for mining and tunneling - Project REAM
Physics International Company
Page last reviewed: September 4, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division