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SUMMARY OF SUBSIDENCE SURVEY DATA <br /> MID-CONTINENT RESOURCES INC. <br /> COAL BASIN MINES <br /> SUBSIDENCE MONITORING POINT MC# y <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 7-/'- `>' /-10-y 710- 1-/ <br /> 2.0 INSTRUMENT STATION ]-P-Z %77-z- Z <br /> NORTH COORD. (MINE GRID) /6,?75.Z& /6975.26 A 9 75. <br /> EAST COORD. (MINE GRID) 5�70.oq S2o,oy SZo. oy <br /> ELEVATION (ft) //9yZ .Z2 //8y1,22 %/ByZ. zZ. <br /> HEIGHT OF TRANSIT (ft) <br /> 3.0 BACKSIGHT AZIMUTH <br /> FIELD ERECT 022° :371 SL" 0730 371 rt" 0730 371 S'2" <br /> FIELD INVERTED 212.0 <br /> ,3 7 20° ' S/" 7,�° —1 <br /> FIELD AZIMUTH o�° �' So" 0?30 37' 1" o73° 371 SZ " <br /> TRUE AZIMUTH off° 37' Si" 073° 37 ' S'Z" ° ' SZ " <br /> 4.0 BACKSIGHT CORR. 6009 ao f +02" oocp oo <br /> 5.0 FORESIGHT AZIMUTH <br /> FIELD ERECT /�Z° 02 ' 07" 132° oZ' /o" L <br /> FIELD INVERTED 3/2.0 0 ' oi/" &2°2 oz3 of <br /> °FIELD AZIMUTH el" / 2 <br /> / <br /> TRUE AZIMUTH jam° 02' " i 3 Z° 0 2 ' off" �32° 0/ 1 <br /> " <br /> 6.0 FORESIGHT VERTICAL ANGLE <br /> FIELD ERECT 42ij° Y -5% " 17' // 971 07" <br /> FIELD INVERTER S' LZ /Z ' ZS" z6s° i Z <br /> FIELD ANGLE V7 W7' Z3:" &Y- W ZL" <br /> HE 1 GHT OF TARGET (ft) z% 95- <br /> 7.0 HORIZONTAL DISTANCE <br /> MEASURED SLOPE D I ST. (ft) 41,736. 2 `� W5.1.Z 8 4,10 36.y9 <br /> ATMOSPHER 1 C PRESS. ( in H2O) /g_so /9. ''41 A q/ <br /> TEMPERATURE (Degrees F) 5 : ' 512 - - <br /> COOR. FACTOR (ft) 11 3 7 /. 3 7 /.3 7 <br /> TRUE SLOPE DISTANCE (ft) 4)q77,65- 471ei3765- 4A937,t?S- <br /> HORIZONTAL DIST. (ft) 49zo• 92 "/920, 'v/ 11920.60- <br /> 8.0 DIFFERENTIALS <br /> NORTH COORD 1 NATE -3Z I Y, 6/5- - 3241/, 46 - 32-1�, �/y <br /> EAST COORD I NATE 36 5-y1 36 5 • S3 3 6 s4�. 9 9 <br /> ELEVATION (ft) -406. Bo_ -vcu. 8 9_ - yo6 . 9'8 <br /> NORTH COORD I NATE (MINE GRID) 36&0, 6 / 136$0.6 o f 36Bo•8Z <br /> EAST COORD 1 NATE (MINE GRID) '/i 7Ao' -4-7 �ii 7S; 0 3 <br /> ELEVATION (ft) `/Z 35-, 3 3 // 5L3S. 2Y <br />