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A 5 C I <br />r._...,~..y..~__ .. <br />' REPORT ON EVALUATION OF CYANIDE CHEMISTRY IN TAILINGS SAMPLES: <br />SAN LUIS PROJECT, MAY 1992 <br />1 <br />1. PREAMBLE <br /> <br />1 <br />1 <br />1 <br /> <br /> <br />1 <br />1 <br /> <br /> <br /> <br /> <br />1 <br /> <br />At the request of Battle Mountain Resources Company (BMRCI, ASCI has <br />undertaken a review of water quality, but specifically the cyanide data, from a series <br />of four samples collected on May 11, 1992 at various points in the tailings system <br />at the San Luis Project in Colorado. In particular, ASCI has focussed the review on: <br />" evaluating the accuracy or otherwise of the cyanide analysis, particularly <br />"free" and WAD cyanide analyses in this data set; <br />• establishing the cyanide chemistry of the tailings system, as of May 11, <br />1992; and <br />• evaluating the performance of the Cytox process which is u3ed to remove <br />"free" cyanide from the tailings stream. <br />It is important to note that this evaluation and the comments mape on cyanide <br />analysis apply specifically to the data set being considered here and are not <br />necessity applicable elsewhere. <br />1 <br />1 <br />