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DENISON MINES (USA) CORP. <br />2008 ANNUAL REPORT <br />West Sunday Mine - M-1981-021 <br />The West Sunday Mine resumed operations in May 2007. During the current reporting period, no new <br />construction or disturbance was completed. As of the date of this report, approximately 34,900 tons of ore <br />were produced from the West Sunday Mine and shipped to Denison's White Mesa Mill, located near <br />Blanding, Utah. Denison projects that approximately 40,000 tons of ore will be produced from the West <br />Sunday Mine in the upcoming year. <br />In March of 2008, the Division provided notification to Denison Mines that the West Sunday Mine is a <br />Designated Mining Operation. Denison initiated characterization of the waste rock and ore as a result of this <br />notification. In July and September, work plans for waste rock and groundwater analysis were provided and <br />approved by the Division. In August of this year, Denison conducted ore and waste rock characterization <br />sampling at the Sunday Mine. A summary report of this analysis was provided to the Division in January of <br />2009. In December and January of 2009 groundwater sampling wells were installed and groundwater <br />samples were collected from the underground workings. A proposed Environmental Protection Plan (EPP) <br />was completed in May of 2009 prior to the submission of this report. <br />This EPP includes the results of the material characterization, drainage report, surface water, and partial <br />ground water evaluations. The Designated Mining Operation process requires five quarters of groundwater <br />sampling. Preliminary results of the groundwater evaluation at the Mine sites indicate additional <br />groundwater characterization will need to be completed and the EPP contains a proposed path forward for <br />this analysis. <br />Exploration drilling will take place concurrent with mine operations at the Sunday Mines, and twenty two <br />exploration drill holes were completed to date. Additional drilling at the site is ongoing under approved <br />Notices of Intent. <br />A Weed Management Plan consistent with the requirements of San Miguel County and the BLM was <br />prepared for the Sunday Mines and approved by the BLM in April of 2009. Denison is coordinating weed <br />management activities with San Miguel County for June of 2009. Weed management conducted in the <br />spring of 2008 was provided to the Division in November of 2008. <br />All work completed at the West Sunday Mine has been completed in conformance with approved Division <br />Mine Permits and Plans of Operation with the Department of the Interior, Bureau of Land Management <br />(BLM). <br />No changes occurred in the Permit M-1981-021 area during the past year. A drainage evaluation was <br />completed for the Sunday Mines to ensure that drainage controls will maintain surface water runoff <br />protection from a 100-year 24-hour storm. As a result, routine maintenance of berms and temporary <br />sediment basins was completed in August of this year. This routine maintenance was documented and <br />reported to the Colorado Department of Public Health and Environment in the annual reporting required by <br />the Colorado Discharge Permit held by Denison and will be provided in the Environmental Protection Plan to <br />the Division in May 2009. <br />An aerial topographic survey of the mine sites was completed during the 2008 reporting year, and although <br />no new disturbances within the permit area are presently anticipated during the coming year, an updated map <br />is provided with the EPP in May.