Dennis V D Andrea

Report of Investigations

• Categories: Mineral industries

• Type: Book
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• Published: 1975
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• Publisher: Unknown

None

Information Circular

• Categories: Mines and mineral resources

• Type: Book
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• Published: 1987
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• Publisher: Unknown

None

Effects of Explosive Properties on Free-surface Displacement Pulses and Crater Dimensions

• Author(s): Richard L. Fischer, David E. Fogelson, Dennis V. D'Andrea

• Categories: Explosives

• Type: Book
• -
• Published: 1970
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• Publisher: Unknown

None

A Study of Fragmentation from Bench Blasting in Limestone at a Reduced Scale

• Author(s): Richard A. Dick, Larry R. Fletcher, Dennis V. D'Andrea

• Categories: Blast effect

• Type: Book
• -
• Published: 1973
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• Publisher: Unknown

None

Blasting Tests in a Porphyry Copper Deposit in Preparartion for in Situ Extraction

• Author(s): Robert C. Steckley, William C. Larson, Dennis V. D'Andrea

• Categories: Blasting

• Type: Book
• -
• Published: 1975
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• Publisher: Unknown

The Bureau of Mines performed a fragmentation experiment in cooperation with Duval Corporation in a porphyry copper-molybdenum deposit near the Sierrita pit south of Tucson, Ariz. This experiment evaluated the fragmentation created in a 10-hole test blast having blasthole spacings of 25, 20, and 15 feet. The 10 blastholes were 9 inches in diameter and contained a total of 17,400 pounds of aluminized slurry blasting agent in 50-foot columns with 60 feet of stemming.