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TRAPPER MINE RESPONSE TO PR-1 ADEQUACY RESPONSE DOCUMENT <br />May, 1987 <br />6. Blastinrt Activities <br />Mr. Jim Pendelton, CMLRD, concerns as listed below are addressed in <br />revised PR-1 permit Section 2.2. <br />• "The propogation of shock waves from [he surface blasting could <br />increase the overburden Load and reduce the strength of the support- <br />ing pillars leading to failure of those pillars?" <br />• "Will the repeated exposure to blasting vibration degrade the roof <br />and ribs, leading to small roof falls or rib blowouts?" <br />• "Should Trapper's blasting plan and/or Empire's roof bolting plan or <br />pillar sizing be amended?" <br />Response <br />Attached are three copies of a revised section to PR-l, 2.2, which <br />addresses Mr. Pendelton's concerns. . <br /> <br /> <br />