PERMFILE114812

• Permit No: C1982057
• IBM Index Class Name: Permit File
• Doc Date: 6/16/2006
• Doc Name: Highwall Mining
• Section_Exhibit Name: Tab 12 Attachment 12-4
• Media Type: D
• Archive: No

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Web Pillar «'idth - Watl~c and ~1't-II'('reek tiruns
Design Mini n Heic ht. It
Depth of Cover, h 4 5 6 7 6 7 6 9 10 10.5 15 20 25
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225 r.. (;>i 7~ 'S 'x SI X.! 85 ~~~ Ilr, i;J
260 ..n 'S Xis ;L1 Xu SJ Kx 9` nc c16 lu7 ; ~j
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330 R' '>ii or. it7' `u; IU? :n' II_' II" II'+ I,a I5. ~•.;
365 XS v" IUa 111 Irll Ilt II' I_'~ Ch Iil ICI 1'0 x~
400 `>~t Irt~ I I' I I'r ' I' I I'1 - 1 ~? 1 i4 L12 Ir•r~ IkR 'u'
435 I~'u IiU I'^ 1'1
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Pillar widths In Itapcs have width-to-height ratlos o} less Ihan 0 5
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DEPTH OF COVER. It
I i_ rlre ±4a- 11'ch pillar design charts titr 1\';algc and \Vc~lf Crcck scams, Senrca II-1V
and Yoast Pits.
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