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Sept. 22, 2022, 5:43 p.m. -  Mike Ferrentino

No plate. The explosive charge would get placed in a hole bored in the rock, then sand and clay would be packed on it so the focus of the blast would be directed into the rock. So the tamper was a rod that had to fit into the dynamite bore. I had not heard about the SL-1. Holy shit! 26,000 pound object got bumped 9 feet during that little mistake. Brutal.

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