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Ouray Silver Mines, Inc. <br /> 1900 Main St. Unit 1 <br /> PO Box 564 <br /> Ouray, CO 81427 <br /> C ,maV -5L V ER X,ANE <br /> April 30, 2022 <br /> "E,IVED <br /> Mr. Lucas West <br /> Environmental Protection Specialist i�R 2 9 2022 <br /> Colorado Division of Reclamation Mining and Safety <br /> 101 ) Street J Cr RECLAMATION <br /> Grand Junction, CO 81501 ��„�dINGAND SAFETY <br /> Subject: Quarterly Milling Report for the First Quarter 2022 <br /> DRMS Permit No. M-2012-032 <br /> Revenue Mine, Ouray County, Colorado <br /> Dear Mr. West, <br /> Ouray Silver Mines, Inc. (OSMI) is providing this Quarterly Milling Report (Report) to Division <br /> of Reclamation, Mining and Safety (DRMS) in accordance with obligations stated in Technical <br /> Revision (TR)-15 to document reagent use and tailings management during the first quarter <br /> 2022. <br /> 1. General Operations/Ore Processed <br /> The mill operated for 4 days in January 2022. The mill ran from January 17th through the <br /> 20th. This was the only run that the mill had during Q I of 2022. This run was to prove <br /> that the mill could produce a lead concentrate that is to the specifications indicated in the <br /> mine's off take agreement. The mill also produced zinc concentrate for the first time <br /> during this run, but the zinc concentrate has not been sold. <br /> During the quarter approximately 450 tons of ore / waste rock were mined and <br /> approximately 450 tons of ore were processed through the mill. <br /> 2. Reagent Transport, Storage and Use <br /> Until the new Reagent Room is completed and certified as an Environmental Protection <br /> Facility, OSMI has been handling chemicals in accordance with the TR-15 Addendum <br /> Request approved by the Division on November 2"d, 2021 to allow limited amounts of <br /> reagents to be stored in the Flotation Gallery. <br /> A summary of reagent use for the quarter is provided in the following table. <br /> Phone:(970)325-9830 ♦ Fax: (970)325-9824 <br />