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<br />MINING TIMETABLES <br /> <br />SNYDER QUARRY ~~~ P`GRES ~ 1~15TU~~ED LAND) <br />z <br />k <br />0 <br />x <br />H <br />H <br />H <br />d <br />r <br />INITIAL S~ <br />~~RM <br />o~~l F>~' cYct- <br />W ~5T ApIT <br />NoRTrI f~pl j <br />TIME IN YEARS <br />I I S 10 20 30 40 50 60 70 80 <br />i ~ <br />i <br />P <br />~' <br />~~ <br />5 I I I I I I <br />I <br />5 <br />I <br />i ~ ~ <br />