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West E[k Mine <br />_ _ GROUND SIIRFACE <br />- - - - - - - - - - - .- - - .~ - V ~ - - - - -. - -. - ~ ~../~-~ . <br /> <br /> <br /> <br /> <br />- - - - - - - - - - - - ._ - - - - APACNC ROCKS ._.. - - - - - - - - .- - - - - - - <br />- - - - - <br />- - - <br />.-- <br />- " <br />- . <br />- MINING AREA <br /> . <br />' <br />_ <br />- - E-SEAM - - - - - - - - - - - - - - - - . <br />- - - - - - - - - - - <br />- - - - - OVERBURDEN DEPTH <br /> TYPICACLY' - - - - - - - - - - - - - - - - . <br />- - - - - - - - - - - - - - - - _ B00 l0 1000 FT - - - - - - - - - - - - - - • <br />- - - ,_ - - - - - _ 70TA1 ZONC OF <br />- - - - - <br />- <br />- <br /> GAVINC/FRACTURING - - <br />- - ~ - - - - - - - - <br />COMBINED CAVED/FRACTURED - - Ol~E 70 MINING QF - - - - - - - - - - <br />ZO <br />N <br />ABOVC E-SEAM B ANO E SEAMS <br />~ <br />~ <br />j <br />i ~ - - - - - - - - - <br /> <br />t <br />~ ~ - - - - - - - - - - <br />~ FRACNRED ZONE <br />~ <br />Zgp' ~ E-SEAM ~ <br />(#220') I GPMBINED GAVED/FRACTURED - <br />~ ZONE ABOVE B-SEAM <br />450' - -- - - - - - - - - <br />_ - - - - - <br />~ <br />y- - ---- <br />c _ <br />~ ----- - <br />- <br />- ~ ~ _ - <br /> <br />_.. <br />~ hIA11) ` ~ FRACiI1HL'0 i , FRACTURED ZONE <br />1 <br />1 <br /> <br />\'•'~ CAVCD ZONE (t74D') <br />f ~ <br /> <br />3J0 ~'' / ' <br />~ THICIR(NESSEN 'L <br />TYPICALLY <br />200' TG' ` <br />, <br /> <br />1 ~' (t Z40') <br />I <br />-fj <br />A D N "-'~ / <br />xnm ~• <br />i-1z n) . <br />TWO SEAM MINING, <br />B AND E SEAM S <br />Figure 21, Projected Extent of Caved and Fractured Zone Heights <br />T <br />ONE SEAM MINING, <br />B SEAM <br />2.05-204 Revised June 1005 PR/0; Rev. March 1006; Rev. May 2006 PRIG <br />