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1 of 2 <br /> <br />POWDERHORN COAL COMPANY August 1982 <br />SUBSIDENCE PREDICTION <br />Sur35~r~~r~c.~('~~) =-5-.02+ 11,95 ~n [--„~~ (~+/w) ] <br />~- m Qx = ~ b = b-e p+~ C -~-I- <br />I -R ~ <br />N N N <br />~~. <br />W W W <br />W W_ W <br />N N N <br />NOO <br />h <br />_ne <br />f00 <br />hAh <br />nrr <br />~~ <br />®~ <br /> <br />~~ <br />Z G O ~ I{1t~' <br />I S~ <br />-~ - ~ I <br />I ~ <br />ioo' ~ I I <br />SIIo ~ ~ I ~ <br />_J I <br />I 11~ _ J <br />OBI <br />3 <br />P i l l g r s f a~ 1~-e ~ -{-a min ; r'i u m <br />I I - ~o c~" w ~ ~. ~~ -Fa ma. n ~ i n <br /> <br />~= Ar -~4r' <br />AT <br />R = 5000 - 88a <br />5d O O <br />AT = I oo X So <br />(2 = a, 824 <br />~ ~ = ~o ~ I I <br />~, 200 = I 1 `~' Co ~t . <br />ctx I - o • S 24 <br />• <br />`~ ~ °%~ _ - S l ., b Z +- I (, 9 5 .~i-ti [ I l 3 !o ~ la , 5/I I <br /> <br /> <br />