Project DIAMOND ORE; Phase IIA: Effectiveness of Craters as Barriers to Mobility
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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Project Diamond Ore Phase 2A consisted of the detonation of three 10- ton charges of aluminized ammonium nitrate slurry at different depths of burst DOB and stemming conditions near Fort Peck, Montana, in October 1972. The purpose of the investigation described herein was to determine the effectiveness of the three craters as barriers to the performance of an M48A2 tank. The unstemmed charge at optimum DOB that formed crater 2A-1 created a marginal condition of go-no go for the tank. The stemmed charge at optimum DOB that formed crater 2A-2 and the stemmed charge at approximately one-half optimum DOB that formed crater 2A-3 created definite barriers to the tank. There were indications that a more effective barrier for the tank was produced by the stemmed charge at approximately one-half optimum DOB than by the stemmed charge at optimum DOB. The time required for a D-9 tractor to make crater 2A-3 passable for the M48A2 tank was 1 hour.
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