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1 <br /> <br />1 <br />1 <br /> <br />MIDDLE CREEK, DOWNSTREAM OF MINE 3 <br />MEAN QUARTERLY, SOLIDS, DISSOLVED <br />1 <br /> <br /> <br />1 <br />J <br /> <br /> <br />n <br />C <br />A <br />n <br /> <br /> <br />1 <br />1 <br /> <br />1980 1981 1982 198 3 1984 1985 1986 1987 1988 1989 1990 1991 <br />