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• <br /> <br /> <br />• <br /> <br />lL <br />N <br />Y <br />N <br />W <br />K <br />F <br />h <br />K <br />Q <br />W <br />Z <br /> <br /> <br />SAMPLE DESCRIPTION COAL REFUSE , SHALE , MOIST , BLACK <br />SAMPLE FLOODED DURING TEST <br /> MOISTU RE <br />%) <br /> <br />SAMPLE <br />BORING <br />DEPTH <br />CON ~ <br />TEN DRY NORMAL <br /> S <br />S <br />NUMBER SYMBOL NO. (FT) gffpgE AF7Ep (PCFTM (K3F) <br /> TEST TEST <br />I O <br /> 06 19 12.1 19.0 78 1.5 <br />2 ~ <br /> 106 19 12.1 16.3 76 5 <br />3 ~ 106 19 12.1 13.8 B6 10 <br /> ( SAMPLE I ) ( SAMPLE 2 I ( SAMPLE 3 ) <br />PEAK SHEAR STRESS (KSF) loo0 3702 6040 <br />RESIDUAL SHEAR STRESS (KSF ) 772 3111 4867 <br />ANGLE OF IN RNAL <br />FRICT ON = 1° <br />CO SIGN = 500 PSF <br />NORMAL STRESS (KSF ) <br />HORQ. DISPL. (W ) <br />DIRECT SHEAR TEST <br />JOB NO. 17 ,453 <br />FIG. B-z <br />