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• ~ Seam Slope Stability Page ~ October 19, 1998 <br />Table 3. Bed thicknesses in feet and by rock types logged on corehole EC-5 from surface <br />(Miller, June 10, 1998). <br />NOTES: r - rider coal, cb - carbonaceous, cl - claystone, (H) interbeded distributions <br />Colluvium Shale Siltstone Sandstone Interbedded Coal Limestone <br /> Rock tyPes <br />16.0 13.7 (7.8) 5.7 23.5 0.9 E2 0.6 <br />15.3 (8.9) 3.1 16.9 0.6 E2 0.4 <br />1.6 (9 .9) (7.8) 2.9 7.2 E2 0.9 <br />(7.8) (6.0) (8.5) 6.0 2.2 E1 r 0.6 <br />(1.4) (1.7) (1.5) 19.6 3.0 E1 0.6 <br />9.0 1.3 (3.0) 18.0 2.9 E1 0.7 <br />(3.0) (9.1) 8.9 3.9 0.2 0.8 <br />12.3 (1.6) 5.4 1.0 0.6 <br />6.1 (5.3) 9.2 27.3 4.3 <br />(4.9) 1.2 2.9 3.2 2.8 <br />2.0 0.9 2.9 15.8 0.3 <br />(6.0) (6.8) (4.9) 20.5 <br />(0.5) 1.3 11.2 5.9 <br />9.5 4.3 10.0 14.9 <br />5.9 0.7 (6.0) 2.0 <br />8.8 1.2 (1.7) <br />(9.1) 1.1 33.8 <br />12.0 1.0 (0.5) <br />8.8 0.7 21.2 <br />(5.3) 1.6 3.8 <br />(6.8) 9.0 <br />8.9 (9.1) <br />0.9 (1.6) <br />0.4 cb (5.3) <br />0.9 (6.8) <br />3.9 2.5 <br />3.9 9.0 <br />9.5 0.8 <br />0.2 cb 1.0 <br />9.7 2.2 <br />