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SUMMARY OF SUBSIDENCE SURVEY DATA <br /> MID-CONTINENT RESOURCES, INC. <br /> COAL BASIN MINES <br /> SUBSIDENCE MONITORING POINT MC! Z <br /> S U R V E Y D A T E <br /> AUG 1981 JUL 1982 AUG 1983 <br /> 1 .-0 BACKS I GHT STATION TP- y TP- Y TP-y <br /> 2.0 INSTRUMENT STATION 7-P-s- TP- S TP- 5- <br /> NORTH COORD. (MINE GRID) // 99 Y.SS // y� <br /> EAST COORD. (MINE GRID) Y9oS- dq ti9105• 63 <br /> ELEVATION (ft) //5-S49. 6E <br /> HEIGHT OF TRANS i T (ft) /. 3/ /• 3/ /• 3/ <br /> 3.0 BACKSIGHT AZIMUTH <br /> FIELD ERECT 3110 /-9 /! " M26 LL' <br /> FIELD INVERTED /cam 9, 22" /�o L� <br /> FIELD AZIMUTH AM-,° �' ae 12 8° q' ,t" <br /> TRUE AZIMUTH a& ' fo" wif /y ' // " o /o f n <br /> 4.6 BACKSIGHT CORR. oov° oo toZ" 000° ao' -03" 0000 oo' vo" <br /> 5.0 FORESIGHT AZIMUTH <br /> FIELD ERECT /o�$° 61 ' 02" ° QL' vs-" ° of ' 06" <br /> FIELD INVERTED O0I30 ay ' S8" 0000 of ' " 008° o/ 0/ " <br /> FIELD AZIMUTH q" / ° 77 06 " �&o oill 63 " <br /> TRUE AZIMUTH 0/ 1 06" W 02 of ' 03" /8 8° 01 ' " <br /> 6.0 FORESIGHT VERTICAL ANGLE <br /> FIELD ERECT 007° SS'' /y " g:fl <br /> FIELD INVERTER 272° ' 13" V7-° oil' off" o, 211 <br /> FIELD ANGLE SS 30" oee AW 1 " <br /> HEIGHT OF TARGET (ft) O, qS 0.95 D,9S <br /> 7.0 HORIZONTAL DISTANCE <br /> MEASURED SLOPE DIST. (ft) Z67'7 OY Z 677,oz Z677 Z0 <br /> ATMOSPHERIC PRESS. ( in H20) /q,SS /4. <br /> TEMPERATURE (Degrees F) Sb 62- <br /> YZ <br /> COOR. FACTOR (ft) 0,7y O. 7N o. 7V <br /> TRUE SLOPE D i STANCE (ft) Z67 7.7(3 Z6 77, 76 267-7 94*' <br /> HORIZONTAL DIST. (ft) Z676. Oz Z676. oI 267G. 2/ <br /> 8.0 DIFFERENTIALS <br /> NORTH COORD I NATE - 2 6 y9.86_ -Z4 y4, 05 - Z4 SO,oS- <br /> EAST COORD I NATE -373•Z 8 3 73,ZN - 373. Z7 <br /> ELEVATION (ft) g8,81 � <br /> NORTH COORD I NATE (MINE GRID) 3 q Y,73 93 y V,7 / 93ly <br /> EAST COORD I NATE (MINE GRID) 4 S 32.2 0 95-3 Z, 2 1/ yS 2. 2/ <br /> ELEVATION (ft) lI ,B4.BN //66q, 72 1/6e5. f3 / <br />