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holes that would be needed to accomplish the breaking of the rock mass. Simply putting <br />charges into the scarp features may not produce the desired results in the rock mass. <br />CGS agrees with CTL that the toe of the existing landslide rubble is likely in a stable condition. <br />However, concerns that have not been addressed in the CTL report are 1) the possibility of an <br />additional slide from the failure of the fissured headwall material above the north and south <br />sides of the existing slide mass (or if it would be rubblized by blasting as mentioned in the CTL <br />conclusion) and most certainly the debris would further load and adversely affect the stability of <br />the existing landslide mass; and 2) potential rockfall into the Area H hole. <br />CGS agrees with the CTL recommendations that further stability analysis work be conducted, <br />but also believes that for meaningful stability analysis, a thorough analysis of the factors <br />involved with the failure should be evaluated, including the factors addressed in our initial <br />summary report dated 1/7/09 (affects of mining geometry, rock-mass quality, loading of the slide <br />by spoils, deviation from the mining plan, affects of blasting, water contributions, etc.). <br />If you have any questions with the content of this memo, please contact this office <br />CC: Sares, Matthews, CGS