2010-02-22_REVISION - M1980055HR

• Permit No: M1980055HR
• IBM Index Class Name: REVISION
• Doc Date: 2/22/2010
• Doc Name: TC review letter
• From: DRMS
• To: Denison Mines ‎(USA)‎ Corp.
• Type & Sequence: TC1
• Email Name: RCO
• Media Type: D
• Archive: No

STATE OF COLORADO

DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
February 22, 2010
Christy Woodward
Z Denison Mines (USA) Corp.
1050 17th Street - Suite 950
Denver, CO 80265
MpRp i201?
D a dSae?n,
COLORADO
D I V IS I ON OF
RECLAMATION
MINING
SAFETY
Bill Ritter, Jr.
Governor
Harris D. Sherman
Executive Director
Ronald W. Cattany
Division Director
Natural Resource Trustee
Re: Topaz Mine, Permit No. M-1980-055 HR, Temporary Cessation (Revision TC-1), Review Letter.
Dear Ms. Woodward,
On February 8, 2010, this office found your request to revise the permit status of the Topaz Mine to
temporary cessation (TC) complete. The request stated that temporary cessation began at this site on July 31,
2009.
Per Hard Rock/Metals Rule 1. 13, certain onsite activities that might occur in the permitted area are not
considered to be mining. According to the recent annual report, some of these non-mining activities possibly
occurred after July 31, 2009, including monitoring and treating noxious weeds, and stormwater management
inspections. Those activities still allow the site to be considered "inactive." No reclamation was reported to
occur at the site after that date. However, please be aware that any reclamation, additional stockpiling,
facility construction (including an ore pad liner) are considered mining activities, and the period of TC would
end. Denison should notify this office of that date. New period of inactivity could begin, and another five-
year period of TC would begin anew.
Temporary cessation may be approved for a site if it can be ensured that the operator will monitor and
maintain the site in a stable condition. Given the variety of structures and features on the site, this office
must confirm that they are, in fact, currently stable and will be maintained thus throughout the period of
temporary cessation. Please confirm, therefore, that the following items are stable and/or secure: topsoil
stockpile, portal entry, buildings, storage tanks, and electrical supply structures.
Since this site also operates under a BLM Plan of Operations, please state whether there will be any ongoing
BLM-required activities that may constitute "mining."
There is no revision of the bond amount anticipated as part of this revision of permit status.
The decision date of this revision is set for March 10, 2010. Please respond to the items above before that
date. If additional time is needed to prepare and submit responses, please send me a request to extend the
Office of Office of
Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines