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• • \ • <br />Earth Mechanics Institute Department of Mining Engineering Colorado School of Mioes <br />Project :Agile Stone Systems <br />Rock Number Rock Type Density Compressive Failure Confining Compressive Notes <br /> Strcn th (unconfined) Load Pressure Stren th (eoofined) <br />8/21197 (g/cm"3) (MPa) (psl) (Ibs) (Psi) (Mpa) (psi) <br />1-B Pikes Peak Granite 2.68 116 16,690 Double Cones <br />1-C Pikes Peak Granite 2.68 131 18,880 Double Cones <br />2-A Pikes Peak Granite 2.70 128 18,500 Double Cones <br />Average 2.69 125 18,020 <br />I-A Pikes Peak Granite 2.67 151,500 3,000 265 38,200 Typical Failure <br />2-B Pikes Peak Granite 2.69 204,000 6,000 358 51,580 Typical Failure <br />2-C Pikes Peak Granite 2.69 207,750 7,500 365 52,530 Typical Failure <br />Note: Samples were taken from boulders of blasted/shot rock. All cores were retrieved from center of boulder to minimize the elTects of blasting. <br />