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Effect of ultralow frequency signaling on blasting array current / by Kenneth E. Hjelmstad and Russell E. Griffin.

By: Contributor(s): Material type: TextTextSeries: Report of investigations ; 9479 | Report of investigations (United States. Bureau of Mines) ; 9479Publication details: Avondale, Md. : U.S. Dept. of the Interior, Bureau of Mines, 1993.Description: 7 pSubject(s):
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