Cost Effective Loading of Large Diameter Pre-Split Holes

International Society of Explosives Engineers
LaRay Collyer
Organization:
International Society of Explosives Engineers
Pages:
11
File Size:
324 KB
Publication Date:
Jan 1, 1990

Abstract

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San Juan Mine began pre-splitting the highwall prior to cast blasting in August 1986. The first pre-split shot used six inch PVC (polyvinylcloride) pipe inside a 10 5/8 inch hole, drilled at a 74 degree angle. The powder factor was about .90 pounds per cubic yard.
Citation

APA: LaRay Collyer  (1990)  Cost Effective Loading of Large Diameter Pre-Split Holes

MLA: LaRay Collyer Cost Effective Loading of Large Diameter Pre-Split Holes. International Society of Explosives Engineers, 1990.

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