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<br />"D" Seam SLope Stability Page 24 October 19, 1998 <br />Table 10. immediate "D" Seam roof rock test results. <br />"D" Seam Immediate Roof. Uniaxial Com~tou Test Results <br />Sample Length Diam. Confining Failure Failure 2 x 1 Structural <br />Ident. (in.) (in.) Pressure Load Stress Corrected Control <br />(psi) (lb) (psi) (psi) of <br />5-621.1 4.578 1.864 0 <br />6-174.0 4.560 1.862 0 <br />10-675.0 4.680 1.866 0 <br />13200 4840 <br />17640 6480 <br />28410 10390 <br />Mean <br />Standard Deviation <br /> ail r <br /> <br />4950 Moderate <br />6630 Minor <br />10660 No <br />7410 <br />2930 <br />"D" _ Seam Immediate Roof. Density and Moisture Measurements <br />• <br />Sample Density Moisture <br />Ident. (PCF) Tested <br />5-621.1 158.3 1.5% <br />6-174.0 159.8 2.1% <br />10-685.0 155.8 3.1% <br />Mean 158.0 2.2•/. <br />Standard Deviation 2.0 0.8% <br />`.J <br />