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CALCULATED AVERAGE SUBSIDENCE <br />• <br />A. Fault Block 1 and 2 <br />1. Area 1 <br />a. <br />b. <br />c. <br />d. <br />I <br />JIo <br />1 <br />average depth - approximately 400' <br />critical width - 500' <br />width of workings - 500' <br />maximum subsidence (Sm) - 10" - 35" <br />~-ies'-~soo'--~~ies'-.~ = e7z' <br />.~ <br />average subsidence = 10 - 35 = 5" - 17" <br />2 2 <br />• <br />2. Area 2 <br />a. average depth - ]20' @ recovery line, 370' @ depth <br />b. critical width - 156' @ recovery line, 48" @ depth <br />c. width of workings - 375' @ recovery line, 500' @ depth <br />d. maximum subsidence - 10.8"-39" @ recovery line, 8.6"-31.2" @ depth <br />~J <br />Average Subsidence @ Recovery i.inc <br />zee' <br />~.--56'-.~---ID6'~s-56'-+~. 218 -; = 9B 7' <br />-- __-1- / <br />~ 7 / <br />.N \ / / <br />1 29y <br />~ / <br />\ ~ / <br />h- 15 fi -*-~ [ 19 ~ = 375' <br />weighted average 10.8 (268) + (10.8)(219) = 7.8" to <br />2 - -- -- <br />487 <br />39 (2h8) + (39) (219) _L8.3" <br />( 2) <br />487 <br />208 <br />D. H. EMLING COMPANY <br />