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w <br />X N <br />vN <br />~ d. <br />~ I <br />4ea-~ <br />w <br />See <br />m <br />Q <br />W zee <br />z <br />W lee <br />0 <br />m <br />e <br />Ed e of Panel 376' <br />~ ~, •j 348' 15' 50' TATUM <br />Railroad ~ ~ w `~ _ w RANCH <br />ca ~ OI p O <br />I J i o H Overburden <br />o"o-o"o <br />O O O LL <br />OOOOOO L L <br />000000 L <br />1; <br />O O LL 91 ' <br />p 29' L Angle of <br />opop Drow = 29 <br />000 L <br />000 L. <br />O <br />395' <br />o, <br />o c°"tar of 100 ~ 0 100 200 300 feet <br />Room-and-Pillor <br />Retreot Panel <br />SCALE <br />Figure 3. Cross-Section from center of Room-and-Pillar panel to House. <br />Drawn to scale. Area under house is the protection area defined <br />• by a 15 foot step-out from the structure and a 15 degree vertical <br />angle projected to the mine. The area defined woud be limited to <br />. 5Q percent extroction. The cross-section is based on 11% hard rock <br />~F%' oYtraction of the coal using SDPS Profile Function Program. <br />