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DEC 7 '92 9:41 FROhI BMGC <br />PRGE.002 <br />$ATTL6 MOUN'fAW GOLD COMPA.hTY <br />NEWS <br /> <br />IMMEDIATE RELEASP <br />Contact: Las Vac Dyke <br />(713) 653-7248 <br />87-TTLD ltOIIl1?]lIli GOLD CO1W7-3Y RmPORTlf iIIQCBBBFQL <br />DETOYIFIC7ITION DAOGRI-IL A'8 iAR LIIIB <br />Denver, December 7, 1992 -- Battle Mountain Gold Company <br />(BbIC) today reported that operation of its new INCO <br />dstoxlfication system at the San Luia mine, near sae Luis, <br />Colorado, has been successlui. The eyetepl is designed to <br />destroy cyanide in the tailings stream'bptore discharge Lo the <br />tailings ponfle. As a result, total cyanide levels in the upper <br />and lower tailings ponds are currontiy less than hal! of the <br />regulatory limit established for the facility by Colorado~s <br />Mined Land Reclamation Board (NERD). <br />SMG Vice President of North amariaan Operations, Ands <br />Douohane, said the system, which has been in operation siTiCa mid <br />October, is a custom designed prose9s developed by the <br />International Nickel Company. The system was installed alter a <br />different process resulted in elevated cyanide levels in the <br />tailings ponds. <br />Mr. Douchane noted that the first system did not perform as <br />desired primarily because of higher than anticipated copper <br />content in the ore body which interfered with the cyanide <br />destruction process. A study bf proven technologies was carried <br />out to find a system that would eliminate the copper <br />interference problems and destroy the cyanide in the tailings <br />slurry. The solution to the problem was reached trirough a <br />cooperative effort involving Battle Mountain employees and the <br />MLRD staff, hs said. <br />Because the San Luis plant was designed withw redundant <br />safety measures and monitors, all of ahich operated as designed, <br />at no time was there a threat aY a cyanide re~ease Co the <br />environment, Mr. Douchane said. In total, more than 63.5 <br />million was Spent by SMG on interim control measuree~, evaluation <br />of the alternatives, test work, and engineering and construction <br />of the SNCO system. <br />A~#~ <br />333 C[aY S7REEC 42ND PLOOR HOU51'O:V. i'rXA3 77002 (713) 6106<00 FAX (713)610-3636 1YLL•X 7636~t <br />