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SNOWMASS COAL COMPANY <br /> NO. 3 MINE WATER LEVEL <br /> 7700 PROJECTED <br /> 7690 ' <br /> 7680 LOWER PORTAL ELEVATION <br /> 7700 FEET <br /> 7670 ACTUAL <br /> 0 7660 <br /> a <br /> 7650 <br /> J <br /> 7640 <br /> w <br /> a 7630 <br /> 7620 <br /> 7610 <br /> 7600 <br /> 12/87 6/BB 12/88 6/89 12/89 6/90 12/90 6/91 <br /> DATE <br />