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The Clover property is situated 68 km northeast of Winnemucca in Elko County, north-central Nevada.
On November 28, 2006, the Company signed an earn-in agreement with Meridian Gold Incorporated, now a subsidiary of Yamana Gold Inc. ("Yamana") whereby Yamana can earn a 51 percent working interest in the Clover property. Yamana may elect to increase its interest to 70 percent by completing a prefeasibility study within 30 months of vesting its initial 51 percent interest in the project. To earn 51 percent, Yamana must make payments totaling US$0.6 million to the Company and complete exploration work totaling US$3.3 million over a four year period. Atna received a payment of US$150,000 in January 2009 and there remains US$250,000 to be paid by January 2010. Annual exploration work commitments for the annual periods ending on November 28, 2009 and 2010 total US$1.0 and US$1.5 million, respectively.
Yamana commenced a second round of drilling to follow-up encouraging gold and silver results intersected from the 2007 drilling. The second round of drilling includes 10 reverse circulation rotary drill holes totaling approximately 8,000 to 9,000 feet. The ongoing program will focus on expansion of this zone and test new target areas on the property. In 2008, Yamana cut several zones of gold mineralization in the Clover Hill target area including:
- 35 feet grading 0.321 ounce per ton gold and 0.54 ounce per ton silver (hole CV006)
- 25 feet grading 0.03 ounce per ton gold and 7.97 ounce per ton silver (hole CV007)
Clover is a low-sulfidation, vein-hosted epithermal gold prospect on the northern margin of the Midas trough, on the southwest flank of the Snowstorm Mountains. The property is underlain by mid-Miocene aged, bi-modal volcanic rocks on the western margin of the Northern Nevada Rift
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