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• -26- <br />~~. <br />• <br />=• GEX Colorado, Inc. <br />ALL Samples <br />Failure Strength (psi) = 4910 + 3.919 (Confining Pressure-psi) <br />r2 0.647; Syx 1920 psi; tcalc = 5.066 (>99x) <br />r <br />j. ~ = 36.4°; cohesion = 1240 psi <br />2000 psi Samples Removed <br />Failure Strength (psi) = 4000 + 6.525 (Confining Pressure-psi) <br />• r2 = 0.711;• Syx = 1630 psi; tcalc = 5.430 (>99Z) <br />- ~ 47.20; cohesion = 783 psi <br />r- <br />i <br />i.. <br />- • <br />