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point at times. The operator has proposed possible explanations for the high copper <br />contents, but there is no confirmation or data available to confirm. <br />Magnesium values have been high also. No explanation can be offered without more <br />data. <br />Regarding the iron analyses, it appears that nearly all the iron from the portals is <br />"potentially dissolved." There is very little iron that has precipitated before it is <br />transported out of the mine. <br />In general, the concentration of iron at the dischazge point has decreased through the <br />years. <br />Cc: Sandy Brown <br />