Denison Mines (USA) Corporation
White Mesa Mill - San Juan County, Utah

Utah Radioactive Materials License No. UT1900479
Ground Water Discharge Permit No. UW370004

Denison Mines (USA) Corporation
1050 17th Street, Suite 950
Denver, Colorado 80265
303-628-7798

News

June 2008

Denison Mines submitted a request to construct a new tailings impoundment - Cell 4B - to the west of tailing Cell 4A. The new impoundment would be 40 acres. The Utah Division of Radiation Control (DRC) is reviewing the license amendment application (see documents below). The review process involves requests for additional information (RAIs) and licensee responses. The DRC will develop an Environmental Report for public review and comment.

April 2008

Dension has begun to process uranium ore (rather than the radioactive waste that it had been processing for the last 10 years) from the Tony M and other Company owned mines, such as the Pandora Mine in La Sal, Utah. Denison is also contracting to receive uranium ore from other mines on the Colrado Plateau

March 2007

Denision Mines has submitted a timely ten-year license renewal application. The DRC is continuing to review the renewal application. The DRC's Environmental Report and an opportunity for public review and comment is expected in 2009. The renewal application is found below.

Documents

• Inspection Reports
~ Inspection with NRC - May 9, 2007
~ Inspection - October 16 and 17, 2007
~ 1st quarter insection, March 26, 2008
~ 2nd quarter inspection, May 28 and 29, 2008

Docments below are also available at the DRC website:
http://www.radiationcontrol.utah.gov/Uranium_Mills/index.htm

• Application for New Tailings Cell 4B
~ License Amendment Application - June 11, 2008
~ Proposed Construction - not available
~ Engineering Design Report - December 31, 2007
~ Environmental Report - April 30, 2008
~~ Attachment A - Hydrology
~~ Attachment B - Proposed Development
~~ Attachment C - Radiological Monitoring
~~ Figure 4.1 - Aerial View
~~ Figure 12 - Map

• White Mesa Uranium Mill License Renewal Application - February 28, 2007
~ Volume 1 - License Renewal Application
~ Volume 2 - Appendices A - I
~ Volume 3 - Appendices J - O
~ Volume 4 - Environmental Report
~ Volume 5 - Environmental Report, Appendices A, B, and C
~ List of Supplemental Information - Documents available at DRC office

• University of Utah Groundwater Age and Isotopic Fingerprinting
~ Preliminary Study - February 1, 2008
~ Final Report - May 19, 2008

• Background Groundwater Quality Report for Existing Wells
~ Revised Addendum to Background Groundwater Quality Report for Existing Wells - November 16, 2007
~ Revised Background Groundwater Quality Report - October 26, 2007
~~ Appendix G
~ Addendum to Background Groundwater Quality Report - April 19, 2007
~~ Appendix A - References
~~ Appendix B - Calculated Travel Times
~~ Maps, Plots, and Figures
~ Background Groundwater Quality Report - December 29, 2006

• Background Groundwater Quality Report for New Wells
~ Main Data Table (MDT) - August 3, 2006
~ MDT: New Data for Analysis
~ MDT: New Data to Add
~ MDT: Data for Analysis
~ MDT: Duplicates - All Uranium Data Dissolved Mass: Lab
~ All Uranium Data Dissolved Mass: Removed Data
~ All Uranium Data Dissolved Mass: For Statistics
~ All Uranium Data Dissolved Mass: Statistics

• Groundwater
~ Chloroform Ground Water Corrective Action Project
~ Chloroform Quarterly Monitoring Reports
~ Ground Water Contaminant Investigation Report
~ Ground Water Corrective Action Plan - August 20, 2007

• Tailing Impoundments
~ Cell 4A Re-lining Project

Updated August 20, 2008

ADDITIONAL
INFORMATION

WISE Uranium Site
~
Utah Division
of Radiation
Control
~
DRC -
Utah Uranium Mills
~
Tony M Mine