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RECEIVED <br /> (A R-Al `77U ER <br /> APR 2 9 2022 <br /> Table 1: Reagent Use L,VISION OF RECLAMATION <br /> MINING AND SAFETY <br /> Rate Tons Total in <br /> Reagent (lbs/t) Processed Ibs <br /> Zinc Sulfate 0.525 450 236.25 <br /> SMBS 0.525 450 236.25 <br /> Areophine 3418 0.02 450 9 <br /> Danafloat 067 0.01 450 4.5 <br /> PolyFroth W20 0.11 450 49.5 <br /> Hydrated Lime 4.3 450 1935 <br /> Copper Sulfate 0.26 450 117 <br /> Sodium Isopropyl Xanthate 0.04 450 18 <br /> Flocculant AF-309 0.0511 450 22.995 <br /> 3. Tailings Management <br /> The mill generated approximately 405 tons of tailings during the first quarter 2022. What <br /> was generated was transported to the temporary lined tailings storage area and tested for <br /> SPLP, TCLP and ABA. Moisture content of the tailings was 15%. Results of SPLP, <br /> ABA, and TCLP tailings analysis were below regulatory limits. These results were <br /> submitted to the Division. <br /> Future quarterly reports will include a mass balance of reagent use as well as additional <br /> analytical results from tailings testing once the Reagent Room is certified and the mill is fully <br /> operational. <br /> If you have any questions, please contact me at (970) 325-9830. <br /> Sincerely, <br /> eyG� <br /> General Manager <br /> Ouray Silver Mines Inc. <br /> Cc: Amy Yeldell, DRMS <br /> Todd Jesse, OSMI <br /> Poppy Staub, OSMI <br /> 2 � 3 = <br />