Atna Resources Ltd.

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Atna Resources Ltd.
Although "Measured Resources", "Indicated Resources" and "Inferred Resources" are categories of mineralization that are recognized and required to be disclosed by Canadian regulations, the United States Securities and Exchange Commission (the "SEC") does not recognize them. Disclosure of contained ounces is permitted under Canadian regulations, however, the SEC generally permits resources to be reported only as in place tonnage and grade. See "Cautionary Note to US Investors."

Cautionary Note to US Investors
Information released by Atna uses the terms "resources", "measured resources", "indicated resources" and "inferred resources". United States investors are advised that, while such terms are recognized and required by Canadian securities laws, the SEC does not recognize them. Under United States standards, mineralization may not be classified as a "reserve" unless the determination has been made that the mineralization could be economically and legally produced or extracted at the time the reserve determination is made. Mineral resources that are not mineral reserves do not have demonstrated economic viability. United States investors are cautioned not to assume that all or any part of measured or indicated resources will ever be converted into reserves. Inferred resources are in addition to measured and indicated resources. Further, inferred resources have a great amount of uncertainty as to their existence and as to whether they can be mined legally or economically. It cannot be assumed that all or any part of the inferred resources will ever be upgraded to a higher category. Therefore, United States investors are also cautioned not to assume that all or any part of the inferred resources exist, or that they can be mined legally or economically.


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May 23, 2008  Canyon Resources' Uranium Joint Venture To Continue Drilling
March 12, 2008  Canyon Resources Encourages Shareholders To Vote
March 06, 2008  Canyon Resources Announces The Postponement Of The Special Meeting
February 28, 2008  Canyon Reports Positive Cecil R Drilling
February 22, 2008  Canyon Resources Completes Positive Reward Project Feasibility Study And Announces Additional Reserves
February 20, 2008  Canyon Resources Options Nevada Properties To Golden Predator
February 06, 2008  Canyon Updates Underground Mine Design Study For Its Briggs Mine
January 23, 2008  Canyon Resources Sets Special Meeting Date For Shareholder Vote On Merger With Atna Resources
December 05, 2007  Canyon Resources Initiates Drilling At Its Briggs Area Projects
November 19, 2007  Atna And Canyon Agree To Merge
November 08, 2007  Canyon Resources Reports Third Quarter 2007 Results And Provides Update On Project Activities
October 03, 2007  Canyon Resources Announces Hearing Date On Its Mcdonald Takings Claim
September 05, 2007  Canyon Resources Outlines Its Forward Looking Strategy
August 27, 2007  Canyon Resources Announces Uranium Drilling Results
August 22, 2007  Canyon Resources Announces The Passing Of Our Chairman And Founder Dr. Richard H. De Voto
August 15, 2007  Canyon Responds To Recent Share Price Decline
August 13, 2007  Canyon Resources Reports Second Quarter 2007 Results And Provides Update On Project Activities
July 30, 2007  Canyon Increases Estimate Of High Grade Mineralization At Briggs Mine
July 09, 2007  Canyon Initiates Feasibility Study On Its Reward Gold Project
May 25, 2007  Canyon Resources Announces $4.95 Million Private Placement

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