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Atna Resources Ltd
Symbol C : ATN
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Close 2012-12-10 C$ 1.13
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Atna Resources drills 13.7 m of 31.2 g/t Au at Pinson

2012-12-11 07:49 ET - News Release

Mr. James Hesketh reports

DRILLING AT PINSON CONTINUES TO CONFIRM HIGH GOLD GRADES

Atna Resources Ltd. has released additional results of underground development drilling at its Pinson mine near Winnemucca, Nev. Highlights from the drill results include:

  • 45 feet (13.7 metres) grading 0.911 ounce per ton gold (31.2 grams per tonne (g/t) gold) in hole PRC-12-017;
  • 30 feet (9.1 metres) grading 0.802 ounce per ton gold (27.5 g/t gold) in hole PRC-12-023;
  • 20 feet (6.1 metres) grading 1.307 ounces per ton gold (44.8 g/t gold) in hole PRC-12-024.

"The development drilling at Pinson is paying dividends by providing additional orebody definition and grade information for the engineering staff. Stope design adjustments have been made and additional tonnage is being brought into the mine plan on two levels. Two ore stopes are now developed, two additional stoping areas are under development, and the cemented backfill facility and mine assay laboratory are completed and in operation. The first shipment of oxide ore containing approximately 3,500 tons was completed Dec. 1, 2012; the mine is awaiting final assays and tonnages. Oxide and sulphide ore continues to be stockpiled on the surface for future shipment," stated Atna president and chief executive officer James Hesketh.

Significant drill hole results are shown in the associated table. The development drill holes were collared within the oxide bulk sample stope and were designed to evaluate the upper margins and internal continuity of the upper Ogee gold zone both along strike and dip. Holes were completed principally down the plunge of the karst breccia-hosted mineralized zone and therefore the intercept lengths do not represent true widths of mineralization. To better understand the results, readers are urged to view the expanded version of this release available on the company's website which includes a long section and cross-section displaying the drilling results in more detail.

                           DRILL RESULTS

Hole ID             From            To        Length          Au grade
                feet (m)      feet (m)      feet (m)        oz/t (g/t)

PRC-12-017         0 (0)     45 (13.7)     45 (13.7)      0.911 (31.2)
PRC-12-018      30 (9.1)     50 (15.2)      20 (6.1)      0.677 (23.2)
PRC-12-019         0 (0)     45 (13.7)     45 (13.7)      0.384 (13.2)
PRC-12-022         0 (0)      20 (6.1)      20 (6.1)      0.399 (13.7)
PRC-12-023         0 (0)      30 (9.1)      30 (9.1)      0.802 (27.5)
PRC-12-024         0 (0)      20 (6.1)      20 (6.1)      1.307 (44.8)
and            60 (18.3)     75 (22.9)      15 (4.6)      0.792 (27.2)
PRC-12-025         0 (0)       5 (1.5)       5 (1.5)      0.623 (21.4)
PRC-12-026       5 (1.5)      25 (7.6)      20 (6.1)      0.792 (27.2)
PRC-12-027         0 (0)      30 (9.1)      30 (9.1)      0.590 (20.2)
PRC-12-028         0 (0)      15 (4.6)      15 (4.6)      0.597 (20.5)
PRC-12-029         0 (0)      25 (7.6)      25 (7.6)      0.375 (12.9)
PRC-12-030         0 (0)      15 (4.6)      15 (4.6)      0.761 (26.1)  

Analytical results contained within this press release were completed by standard fire assay methods with an atomic absorption or gravimetric finish by Inspectorate America Corp., an independent, ISO-certified, analytical laboratory located in Sparks, Nev. Inspectorate America maintains a rigorous QA/QC (quality assurance/quality control) program which is carefully monitored and evaluated for quality by Atna.

This press release was prepared under the supervision and review of William Stanley, vice-president, exploration, of Atna, a registered member of the Society for Mining, Metallurgy and Exploration, a licensed geologist and qualified person, as defined in National Instrument 43-101, who has verified the authenticity and validity of the technical information contained within this news release.

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