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Elk Creek Mine Subsidence Page 15 February 26, 2003 <br />shield recovery room for Panel #4 will be isolated from the North <br />• Main by a tapered barrier pillar, 250-ft wide on the north side <br />and 500-ft wide on the south side of Panel #4. <br />Longwall mining of Panel Group #2 will also proceed <br />' northerly, one panel at a time. The 28-ft wide by 9.5-ft high <br />set-up rooms of all panels will be at their west ends. The <br />set-up rooms for Panels #5 through #8 will be isolated from the <br />Northwest Mains by tapered barrier pillars, minimum 250-ft wide <br />' on the south side and 500-ft wide on the north side. The set-up <br />rooms for Panels #9 through #11 are progressively offset toward <br />the east in order to avoid mining in thin coal (5 9-ft), as <br />' indicated on Plate 7. These set-up rooms will be isolated from <br />the West Bleeders by 250-ft wide barrier pillars. Individual <br />longwall panel mining will proceed easterly to the shield <br />' recovery rooms at the east end of each panel. The shield <br />recovery rooms will be isolated from the North Mains by tapered <br />barrier pillars, 250-ft on the north side and 500-ft wide on the <br />1 south side. <br />Longwall mining of Panel Group #3 will proceed southerly, <br />' one panel at a time. The irregular western longwall mining <br />limits for Panels #12 through #14 avoid mining in thin coal (< <br />8-ft), as indicated on Plate 12. The irregular western longwall <br />' mining limits for Panels #15 through #19 avoid mining under the <br />• shallow overburden between the "D" Seam and the Hubbard Creek <br />drainage, as thin as 70-ft west of planned Panel #19, also <br />indicated on Plate 12. The 28-ft wide by 9.5-ft high set-up <br />' rooms of all panels will be at their west ends. The set-up rooms <br />for Panels #12 and #13 will be isolated from the Far West <br />Bleeders by tapered barrier pillars, approximately 250-foot wide <br />on the north side and approximately 1,770-ft wide on the south <br />side. The set-up rooms for Panels #14 and #15 will be isolated <br />from the Far West Bleeders by tapered barrier pillars, <br />' approximately 250-foot wide on the south side and approximately <br />500-ft wide on the north side. The set-up room for Panel #16 <br />will be isolated from the Far West Bleeders by a tapered barrier <br />' pillar, approximately 300-ft wide on the south side and <br />approximately 800-ft wide on the north side. Panels #17 through <br />#19 are progressively offset further toward the east in order to <br />' avoid mining in thin coal(< 10-ft), as indicated on Plate 12. <br />These set-up rooms for Panels #17 through #19 will be isolated <br />from the Far West Bleeders by 250-ft wide barrier pillars. <br />Individual longwall panel mining will proceed easterly to the <br />' shield recovery rooms at the east end of each panel. The shield <br />recovery rooms for Panels #12 through #15 will be isolated from <br />the Northwest Mains by tapered barrier pillars, 250-ft wide on <br />the north side and 500-ft wide on the south side. The shield <br />recovery rooms for Panels #16 through #19 will be isolated from <br />the West Mains by 250-ft wide barrier pillars. <br />t -15- <br />