Within the Sheep Mountain Project area, uranium mineralization is contained in the lower to middle Eocene Battle Spring Formation. The Battle Spring Formation, consisting of upper and lower members (designated the "A" for the lower and "B" for the upper), is a fluvial deposit. Mineralization is hosted by the Battle SpringFormation and has been described extensively since the 1960s and has been termed a "Wyoming Roll Front System." These deposits are often organic-rich, fine-grained lenses in tabular, or "roll front," configurations. The uranium mineralization occurs primarily in the lower member of the Battle Spring Formation (Stephens,1964).

The host of uranium mineralization for the Project is the Battle Spring Formation. Most of the mineralization in the Crooks Gap district occurs in roll-front deposits(Bendix, 1982). Roll fronts have an erratic linear distribution but are usually concordant with the bedding. Deposits have been discovered from the surface down to adepth of 1,500 feet (Stephens, 1964). The two major uranium minerals are uranophane and autunite. Exploration drilling indicates that the deeper roll-type deposits are concentrated in synclinal troughs in the lower Battle Spring Formation. Three possible sources for uranium have been suggested: post-Eocene tuffaceous sediments, leached Battle Spring arkoses, and Precambrian granites (Granite Mountains).

Structural controls of uranium occurrences along roll fronts include carbonaceous siltsto ........

The project consists of two distinct and independent mining areas, the Congo Open Pit and the Sheep Underground, with common processing on mine material via aheap leach recovery facility. The currently planned mine life of the open pit is 12 years with an additional four years allotted for mine closure and reclamation. The currently planned mine life of the underground is 12 years which includes one year for development and 11 years mine production. The heap leach facility is designed to accommodate the mined material from both open pit and underground mine operations over an operating life compatible with the open pit operations.

Congo Open Pit
The current mine design for the Congo Pit includes typical highwall heights in the range of 100 to 400 feet and reaches a maximum depth of 600 feet in localized areas in the southeast pit corner. The open pit design employs similar design parameters and mining equipment configurations to those used successfully in past Wyoming conventional mine operations. Highwall design is based upon the performance of past projects in the Sheep Mountain and Gas Hills districts and includes an average highwall slope of 0.7:1 (horizontal: vertical), which reflects the average of a 10-foot bench width and 50-foot highwall at a 0.5:1 slope.

The host formation is exposed at the surface and dips between 9 and 16 degrees to the southeast. The initial pit construction will create access from the open pit mine area to the mine was ........

The uranium recovery method at the Sheep Mountain Project (the Project) is conventional heap leaching, a process identical to that applied globally for the last five decades to the oxidized ores of copper and gold. This process embodies an oxidant to mobilize uranium minerals from the mined material stacked on the heap pad and dilute sulfuric acid to dissolve the uranium. The uranium-enriched solution is pumped to a recovery plant (mill) for purification and concentration of the uranium to a saleable product, using solvent extraction and precipitation systems. Over a 12 year mine life, the heaps will recover an average of 1.4 million pounds of U3O8annually.

Uranium recovery at Sheep Mountain will include the following processes:
- stacking of mined material on the heap leach pad;
- application of leach solution;
- collection of pregnant leach solution ("PLS");
- filtering of sand and fines from PLS;
- solvent extraction to concentrate and purify ........