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<br />BATTLE MOUNTAIN GOLD COMPANY <br />AN DR~J. DOUCHANE f~ <br />VICE PRESIDENT, fl4i RE MIIXMWN <br />NORTH AMERICAN l1PERATIONS GOLD COMPANY <br />By Facsimile Message <br />June 9, 1992 <br />UN 1 019192 <br />Dr. Harry Posey :VIIf1E <br />Mined Land Reclamation Division d Land <br />1313 Sherman Street R@~I?~^"''^" "' <br />'`"n <br />Room 215 <br />Denver, CO 80203 <br />Dear Dr. Posey: <br />The following comments are in response to your second set of <br />comments transmitted by letter dated June 8, 1992 regarding <br />adequacy concerns for Technical Revision No. 007. <br />The initial sampling procedure will be identical to the <br />procedure used by Dr. Shutt (see attachment A). The before <br />mentioned procedure will be used for two main reasons. <br />1. To determine the rate of diffusion througho>at the <br />pond for hydrogen peroxide <br />2. To determine the reaction rate and efficiency <br />Pond freezing will not present a problem for hydrogen ~beroxide <br />because of the following: <br />1. The 1NCO S02 system is scheduled to be operating by <br />October 15, 1992 <br />2. Based on operational experience last winter, the <br />tailings slurry carries sufficient thermal energy to <br />promote thawing directly in front of the beadh area. <br />This open water will have sufficient area to <br />facilitate hydrogen peroxide addition. <br />5670 GREEN WOOD PLAZA BLVD. SUITE 106 ENGLEWOOD. CO 80111 13071721-6744 FAX (703) 721fi6U <br />