Re: Atna's Reward technical report recommends open-pit mine
in response toby
posted on Apr 16, 2008 01:23PM
Dedicated to responsible gold production and the creation of sustainable value for shareholders
Some more drilling results from Briggs Mine.
|Wed Apr 16, 2008
Atna Drilling Extends Gold Mineralization At Briggs Mine
|Golden, CO - Atna Resources Ltd. ("Atna") - (TSX:ATN), is pleased to announce assay results from drilling completed in February 2008 at the Briggs Mine in Inyo County, California. A total of 2,905 feet were drilled in five angled reverse circulation holes from the bottom of the BSU Pit. The drill holes and assays demonstrate that gold mineralization is continuous in a relatively untested area between the pit and the hanging wall of the 65-70o west-dipping Goldtooth feeder/fault structure, which hosts zones of higher grade gold elsewhere. The gold occurs in numerous bands of higher grade mineralization inter-fingered with conventional pit grade material. The new data may significantly improve the optimization study presently underway to maximize gold extraction from the combined open pit/underground mineralization.
Drilling program results, with significant gold intersections, are shown in the table below:
2008 BSU DRILLING CAMPAIGN INTERCEPTS
Gold mineralization at the Briggs Mine is hosted in siliceous gneiss containing inter-fingered amphibolite bodies, forming the hanging wall rocks of the ore bounding Goldtooth structure. The Goldtooth fault appears to be the major feeder structure for gold mineralization at the Briggs Mine. Gold mineralization occurs in two distinct styles: lower grade mineralization, mined successfully in the past by open-pit methods, along complexly faulted low-angle structures west of the major fault, and higher grade gold mineralization in an envelope close to the Goldtooth fault.
The Briggs Mine is a permitted mining facility with ongoing residual gold production from its existing leach pad. The mine has produced over 555,000 ounces of gold from open pit and underground mining since 1996. Atna is presently working to restart mining operations and has commenced plant and equipment refurbishment work at the site. Existing Technical Reports compliant with SEC guide 7 are currently being rewritten as NI 43-101 compliant reports and a new study is in progress to optimize and increase the size of existing mine designs.
All assay data from the Atna drill holes were completed by ALS Chemex an ISO certified analytical laboratory. Assays were completed by standard fire assay methods and Atomic Absorption finish for gold with over limit assays being re-assayed by standard fire assay with a gravimetric finish. Atna and ALS Chemex have rigorous QA and QC protocols in place to insure the quality of the analytical data reported in this press release. This press release was prepared under the supervision and review of Mr. Steve Zahony, an employee of Atna, a Certified Professional Geologist, and Qualified Person with the ability and authority to verify the authenticity and validity of information contained within this news release.
For additional information on Atna Resources and the Reward Project, please visit our website at www.atna.com or contact:
James Hesketh, President and COO (303) 278-8464
Valerie Kimball, Corporate Communications (303) 278-8464
Kendra Johnston, Investor Relations (800) 789-2862