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Earth Mechanics Institute Ot" <br /> Colorado School of Mines <br /> Client: Lyman Henn Mining Engineering Department <br /> Location: Jefferson County, CO <br /> Project Name: Ralston Quarry Water Storage Evaluation <br /> Date:03/16/2011 Average Diameter Length to Density Uniaxial Compressive Strength <br /> Failure <br /> Rock Type Length Diameter Load Failure Stress UCS(2:1) Notes <br /> (Failure type) <br /> Sample ID Ratio <br /> (in) (in) (lbs/ft) Obs) (&(psi) (psi) (Mpg) <br /> LH-1Qa 100.0-100.7 Igneous 4.928 2.390 2.06 178 163,522 36,450 36,905 254.4 Non-Structural <br /> LH-2Q98.5-99.5 Igneous 4.888 2.369 2.06 177 69,266 15,715 15,912 109.7 Structural <br /> C11 <br /> 2lcrorreet;on <br /> 0.88+0.22 d} <br />