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DRAFT <br />Table 8. Maximum Vertical Subsidence (Smax) for Planned Red Cliff Mine Longwall Panels <br /> (Cont.) <br />Panel Overburden Width/ Supercritical, Smax/m Smax Distance, from Panel <br />Width Depth Depth Critical or Subsidence Centerline Ribside <br />feet feet Ratio Subcritical Factor from to from to <br />(meters) (meters) (feet) Panel (feet) (feet) (feet) <br />1200 200 6.000 Supercritical 0.810 0 10 -600 -590 <br />(365.8) (61.0) (8.91) <br /> 500 2.400 Supercritical 0.810 0 +25 -600 -575 <br /> (152.4) (8.91) <br /> 1000 1.200 Subcritical 0.788 0 0 -600 -600 <br /> (304.8) (8.55) <br /> 1500 0.667 Subcritical 0.681 0 ~ 0 -600 -600 <br /> (457.2) (7.13) <br /> 2000 0.500 Subcritical 0.490 0 0 -600 -600 <br /> (609.6) ~ (5.39) <br />NOTES: Single panel analysis and positive distances are away from the panel centerline and <br />negative distances are toward the panel centerline. <br />Page 33 of 57 <br />