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1 <br />'1 <br />1 <br />1 <br />r <br />1 <br />I <br />1 <br />1 <br />1 <br />1 <br />1 <br />r <br />iii iiiiiiiiuiiiiii1 <br />999 <br />~/~ ~~XNIeITl9- <br />,~ Postmining Drainage Calculations, 10/23/97 // <br />Doc Date:12/11/2001 <br />U~~-~ <br />(Revised 09/01/98) <br />