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MIDDLE CREEK, DOWNSTREAM OF MINE 3 <br /> SOLIDS, DISSOLVED <br /> 3500 <br /> 3000- <br /> 2500 - <br /> 200D- <br /> J <br /> O 150D - <br /> 1000 <br /> 500 <br /> c_ <br /> m 0- <br /> m 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 <br />