The Sand Creek uranium joint venture area of interest is located south and east of Douglas, Wyoming and was identified during previous uranium exploration programs in the early 1980s by a subsidiary of Atna. Ownership of the Sand Creek Uranium Joint Venture is 70 percent Atna and 30 percent Uranium One Exploration USA Inc.,(TSX:UUU). Atna is working with Uranium One to establish an exploration budget for this projectDrilling during 1981 and 1982 in the program area consisted of 88 drill holes for approximately 69,000 feet. A 2006 drill program by New Horizon Uranium Corp. focused on the western portion of the property. Fourteen holes were completed totaling 10,395 feet, which clearly demonstrated the presence of "roll front" style uranium mineralization. A follow up drill program consisting of approximately 16 drill holes totaling 11,700 feet was completed in mid-2007 and the favorable results were announced in a press release in August 2007. Three of the 16 holes intercepted significant grades by gamma log measurement.

Drilling intercepts include:

10 feet grading 0.119 percent U₃O₈, including 4.5 feet grading 0.241 percent U₃O₈ in hole SR07-9; 7 feet grading 0.075 percent U₃O₈ in hole SR-10; and 13.5 feet grading 0.142 percent U₃O₈ in hole SR07-11.

The drilling program consisted primarily of wide-spaced, reconnaissance style drilling with drill hole spacing of 500 to 1,000 feet.

Historical data show that numerous surface radioactive anomalies and uranium anomalies in well waters occur in the Sand Creek Project area. The White River sediments are uraniferous in the entire project area and exhibit geologic features similar to Cameco's uranium deposit. The Company and it's JV partner, Uranium One believe that excellent potential exists for the discovery of additional uranium deposits on lands where it has mineral rights. Mineralization is believed to occur at depths which range from 600 to 700 feet. The uranium mineralization is hosted in the basal sandstones of the White River Group near the pre-White River unconformity.

The Sand Creek Property is located about 80 miles to the west of Cameco's Crow Butte uranium deposit, also hosted by the White River Group and 30 miles to the south of Cameco's Smith-Highland Uranium deposit. As published by Cameco, the Crow Butte deposit produced approximately 0.6 million pounds of U₃O₈  in 2008 and has current proven and probable reserves of  5.0 million pounds U₃O₈.

Uranium mineralization in the area is hosted in the Chadron Formation, which is composed of sandstones, conglomerates, and red to green siltstones and claystones. The sandstones are lenticular in nature and average from five to 20 feet in thickness and occasionally range up to 45-feet thick.

The sandstones and conglomerates, most abundant in the lower Chadron Formation, are arkosic and commonly coarse-grained, poorly sorted, and angular to subangular. They are cemented with both calcite and silica. The basal Chadron Formation was probably deposited by streams in an alluvial fan environment. The large quantities of fine-grained sediment (silts and clays) suggest that significant deposition occurred in overbank and channel-margin environments.