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block but still inside the current main scarp. Prisms 24, 25 and 26 should be surveyed prior to and <br />immediate after blasting. <br />5. The southern block also remains unstable. The mine operator proposal to address the southern block is <br />simply, "Likewise more attempts to stabilizing the areas referenced by the numbers 13, 15, and 18 in Exhibit <br />12 will be undertaken." This is exceedingly brief and contains no specific plan-of-action information for <br />DRMS to consider. <br />6. We continue to reiterate our recommendation #5 in our report dated November 2, 2009. We believe that <br />retrogressive movement of the slope above what is now the major scarp remains a good possibility. The <br />granite is weathered and abundant discontinuities in the rockmass (related to the proximity of the Rampart <br />Range fault) has weakened it. With the loss of lateral support, we would expect dilation of the fractured <br />rockmass over time and additional tension cracks to open above the scarp. While prisms 19, 32, 33, 34, <br />and 35 presently do not show movements above the existing head scarp, they should be continually <br />surveyed at regular intervals. <br />Thank you for giving us the opportunity to comment on the Technical Revision. If you have any questions about the <br />content of this review, please call TC Wait at 866-2611 ext. 8330 or Jon White at ext. 8332. <br />CC: Matt Sares, CGS <br />• <br />4