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Ouray Silver Mines, Inc. <br /> 1900 Main St. Unit 1 <br /> PO Box 564 _ <br /> Ouray, CO 81427 <br /> OJL'RAV -5l 1 ER ,11-11NE5 <br /> RECEIVED <br /> July 13th, 2021 JUL 16 2021 <br /> Colorado Division of Reclamation Mining and Safety DIVISION OF RECLAMATION <br /> 1313 Sherman Street, Rm 215 MINING&SAFETY <br /> Denver, CO 80203 <br /> Subject: Technical Revision 15 (TR-15) Wet Test Commissioning Permission <br /> DRMS Permit No. M-2012-032 <br /> Revenue Mine, Ouray County, Colorado <br /> -wear Mr. West, <br /> Ouray Silver Mines, Inc. (OSMI) is formally requesting permission to begin wet testing the <br /> Revenue Mill beginning on July 19th. This testing involves pressure and leak testing lines and <br /> tanks to ensure that they are properly assembled. There will be no reagent chemicals used in this <br /> process. The tests will be done with raw water taken from the coffer dam that supplies the mill. It <br /> is estimated that there will be less than 10,000 gallons of water used in this wet test process. All <br /> water will be left in the system after the test is complete. <br /> OSMI appreciates your attention to this matter. If you have any questions, please contact me at <br /> (970) 325-9830. <br /> Sincerely, <br /> Todd J sse <br /> Environmental Specialist <br /> Ouray Silver Mine Inc <br /> Cc: Travis Marshall, DRMS <br /> Amy Yeldell, DRMS <br /> Brian Briggs, OSMI <br /> Phone: (970)325-9830 ♦ Fax: (970)325-9824 <br />