Development of large diameter drilling equipment. Volume II: bit feature test
Spokane, WA: U.S. Department of the Interior, Bureau of Mines, Contract C-12482, 1981 Mar; :1-336
The comparative test program provided data to evaluate three bit configureations: CUTTERS ONLY, JET ASSIST, and CUTTER PUMPS, in order to recommend one configuration for the LDDM. The bits were evaluated in terms of their cleanability; how much aggregate ...
Comparative evaluations; Design; Drill bits; Drilling equipment; Experimental data; Lining processes; Performance testing; Rotary drills; Shaft excavations; Underground mining
CP; Final Contract Report
NTIS Accession No.
Spokane, WA: U.S. Department of the Interior, Bureau of Mines, Contract C-12482
Fenix and Scisson, Inc., Tulsa, OK