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• 2. Underground Mine Operations <br />Energy Fuels plans to reopen the Urantah Decline and Packrat Mine as a single combined underground <br />uranium-vanadium mine operation called the Whirlwind Mine. The mine will operate one to three <br />shifts per day five days per week. Initially, ten to twelve employees will mine approximately 100 tons <br />of ore per day. As the mine expands and more headings are opened up, up to twenty-four employees <br />may work at the mine and production will increase to an average of 200 tons of ore per day. The mine <br />has a projected life often years based on known and inferred resources. <br />2.1 Mine Design <br />Based on existing exploration data, the mine will be initially expanded to the west and south in the <br />direction of the proposed vent shafts shown on Map C-1 B. The thin and irregular nature of the ore <br />body makes it difficult to define the exact location and extent of future mining. Exploration drilling <br />from the surface and long-hole drilling from existing underground workings will ultimately determine <br />the optimum location of future drifts and production stopes. The maximum limit of underground <br />mining is shown on Map C-1B. <br />Future underground mining operations may connect with adjacent mines in the area such as the <br />Lumsden No. 2 and Rajah 49. This would be done primarily for mine ventilation purposes although <br />some older stopes could also be mined. No additional surface disturbance is anticipated at this time <br />because ventilation fans would be installed underground and ore and waste would all be hauled out <br />through the Whirlwind Decline. Before connecting with older mine workings in the area, Energy Fuels <br />will consult with the BLM and DRMS regarding potential environmental impacts to bats (see Exhibit <br />H), ground water (see Exhibit G), and other resources. Appropriate mitigation measures would be <br />developed at that time to minimize identified environmental impacts. <br />2.2 Mine Plan <br />Nine-foot high by twelve-foot wide drifts will be driven through known ore-bearing zones to provide <br />access for production mining. The drifts also provide access for geologic mapping, long-hole drilling, <br />rib scanning, and collecting samples. This geologic data will be used to develop detailed mine planning <br />• and stope development for each drift. <br />Whirlwind Mine 07 (rev. April 08) D-3 <br />