encoding utf-8 survey Main centreline date 1970.07.16 team "A.G. Wilkins" notes team "J.D. Walford" instruments team "A. Boycott" tape copyright 2011 UBSS declination 0 degrees units tape feet data normal from to tape clino compass ignoreall 8 9 33.7 -9 110 9 10 18.7 -29 137 10 11 10.7 -9 150 11 12 22.0 -2 220 12 12a 30.0 0 260 12 13 22.4 0 083 13 14 8.5 29 122 14 15 18.9 -6 101 15 16 7.7 down - 16 17 15.0 -30 323 17 18 4.5 0 338 18 19 23 down - 19 20 17.9 -38 343 20 21u 29.7 -8 095 21u 22u 39.9 0 145 22u 23u 66.0 -2 193 23u 24u 30 -2 188 #u are upstream stations # 24u is at sump 20 21 48.7 22 314 21 21a 30 0 316 high level tube leading into roof collapse 21 22 33.5 -33 284 22 23 11.0 -38 246 23 24 20.9 -2 010 24 25 7.0 up - 25 25a 40.0 0 118 25 26 32.7 -7 319 26 27 20.8 2 283 27 28 15.0 -5 342 28 29 17.7 -6 258 29 30 13.0 8 228 30 31 13.0 0 273 #31 is start of choke endcentreline endsurvey