PERMFILE111363

• Permit No: C1981018A
• IBM Index Class Name: Permit File
• Doc Date: 5/13/2002
• Section_Exhibit Name: SECTION III MINE DESCRIPTION
• Media Type: D
• Archive: Yes

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TABLE III-2
ROOM AND PILLAR SUBSIDENCE DATA FROM SELECTEb MINES
LOGt710N PINING
HlIDHT
IHNm) PILLAR
WIDTH
IW)
(m) EITRAC710N
IRI
Ip•rcrn) DEPTH
101
(ml APO. PILURDiRE95
lL~l
IY/~) L.,,IH11Y) 6UeeIDENCE
IHI
IWm•nI)

REFlRlNCle
N. Staffs., G.B. 1,30 3.1 70 79 5.98 2.54 13.8 Wardell (1089).
Do-- 1,30 13.4 51 101 4.21 .41 2.2 Do.
w 1,37 9.0 41 137/274 5.20110.52 0.788/1.5 10.5 Wardell 6 Eynon (1888).
(:annoUt, G.B. 2,13 15.0 31 265 8.70 1.22 9.B Do.
Fr•nklln, III. 2.14 6.0 D9 152 11.2 6.68 34.9 Herten 6 Rullstlpe (1927)
LIUc Creek, III. 7,82 12.0 51 122 S.B3 3.15 15.2 Wann (1973).
J.J. No. 1, N. Maalw 3.1 12.0 30 152 5.38 1.34 B.B C.H. Parnah (wrl0en commun.,
1979).
Montoar 10, Pa.' 1.7 2.3 83 9B 13.03 9.59 40.0 Greenwald b Others (939).
Crudble, Pa.• 2.1 1.5 85 129 19.51 28.8 51.5 Maize b Greenwald (1839).
Glbaon, Pa.• 1.6 1.5 90 108 24.47 28.Y 50.0 Maize 6 Greenwald (1840)
CruUble, Ps.• 2,1 1.6 BS 102 24.47 33.2 49.2 M•IZa 8 Groenw•Id (1941)
M•nlscolln, P•.' Y.I 1.8 tl0 Dt 13.08 18.8 40.3 lM.
Carlsbad, N. Mez. 3.89 5.5 95 305 137.00 97.7 50.8 Miller 6 Pierson (1858)
Jhana, India" 10.5 61.0 57 185 8.67 1.49 .58 Kumar d Slnph (1873)
• Data partly determined from plans and sections presented
• "Not used in statistical analysis because of hydraulic sand backfilling (stowing).