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`III IIIIIIIIIIIII III <br />I <br /> <br /> <br />APPENDIX 13-8 <br />ROCK CNECK DAM DESIGN <br />SENECA II MINE <br />ROUTT COUNTY, COLORADO <br />BY <br />PEABODY COAL COMPANY <br />Doc Date:12/11/2001 <br />.a~..... <br />~ pp0 REg~~~ <br />•~~Q,~.•.....~~sl • <br />~•o`'.•~p~D 1. gFy~.~~~. <br />•~ <br />° ~ 5 ° <br />. • <br />:~'s~o ..... NG~~~o ~~1 <br />. NAI,i~~~i~~ <br />., <br />