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PRpCE Se C~+EMCnLS OM6CN <br />MINING nNp MWER4L PROCE ^ G CJ-~EMIC ~aLS <br />"NALCO GEMICAL COMPANY <br />2x22 SOI~T~{~JY ilt+ STREET ^ DENVER. COLORADO B02tD ^ 4REA 3D3~777~9O9D <br />VSB„~'ld~,S ~, <br />September •9, 1985 <br />Mr. Mike Kohn <br />Wyoming Fuel Company <br />P.O. Box 15596 <br />Lakewood, Colorado 80215 <br />Dear Mike: <br />I have enclosed the Product Bulletins and Material Safety Data Sheets for <br />NALCO 8852 and NALCO 8873. As we discussed, because these are clarifica- <br />tion chemicals,. they are designed to stay with the solids. Therefore, <br />unless a severe overdose is used, there is only a trace of polymer in the <br />thickener overflow. These products are biodegradable and non-toxic and <br />at the dosages used in your plant will cause no problems even if the <br />.thickener overflow were discharged to a receiving stream. If you have <br />any further questions or need any other information please let me know. <br />• Sincerely, <br /> <br />Richard F. Tuka <br />District Manager <br />Mining and Mineral Processing Chemicals <br />Nalco Chemical Company <br />RFT:jep <br />Enclosures <br />aEC~rvEt~ <br />OCT 31885 <br />MINED LAIMO <br />REC~~-IMATION DIVI310N <br />CpRPORaTE pF~IC ES: 2901 BUTTERC~ELp RpGp a ^4K BROOK, iL LIN O'S 6p9lt a .1 REY Ott-BB7-93pp <br />