Material Change Report
1. Name and Address of Company
Atna Resources Ltd.
14142 Denver West Parkway, Suite 250
Golden, Colorado 80401
2. Date of Material Change
August 5, 2010
3. News Release
A news release was issued on August 5, 2010 through PR Newswire and was filed with regulatory
authorities in Canada, announcing the resignation of board director. A copy of the news release is
attached hereto as Schedule A.
4. Summary of Material Change
The Company announced that Mr. John Theobald has resigned as a member of Atna’s board of
5 . Full Description of Material Change
We received noticed from Mr. Theobald that he was tendering his resignation from Atna Resources
board of directors.
6. Reliance on subsection 7.1(2) or (3) of National Instrument 51-102
7. Omitted Information
No significant facts otherwise required to be disclosed in this report have been omitted.
8. Executive Officer
The following executive officer of Atna is knowledgeable about the material change and may be
contacted by any of the Securities Commissions in respect to the change:
Vice President and Chief Financial Officer
Phone (303) 278-8464 (Ext.141)
Date of Report