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MINING PLAN <br />I~ <br />1. Background Information <br />EXHIBIT D <br />The ore deposit is located in the Salt Wash Member of the Morrison Formation, which consists of <br />interbedded fine-grained sandstone (about 60 percent) and mudstone (40 percent). The ore is <br />located within the upper (i.e., Top Rim) red sandstone of the Salt Wash and occurs in azeas of <br />reduced gray sandstone and where the sandstone is in contact with gray or green mudstone bands. <br />The uranium and vanadium mineralization occurs in bands that range in thickness from a few inches <br />to in excess of eight feet. The average ore thickness is 2.7 to 3.0 feet. The ore body is located below <br />approximately 500 to 750 feet of cover and can be accessed through adits located on the side of <br />canyon walls and declines and shafts. For a full discussion of azea geology, see Exhibit G -Water <br />Information. <br />1.1 Urantah Decline <br />The Urantah Mine was started by Pioneer Uravan in September 1979. It consists of a 3,200-foot- <br />long, single-entry decline that accesses the ore body at a six percent grade plus approximately 700 <br />feet of drift in the Salt Wash member. The decline is supported by steel sets through the Brushy <br />Basin member of the Morrison Formation, which is predominantly shales and mudstones. Both the <br />decline and drifts aze about nine feet high by twelve feet wide. Approximately 2,800 tons of ore had <br />been mined when the mine was closed in September 1981. The mine was later acquired by Cotter <br />Corporation, but remained idle until it was reclaimed in the fall of 2002. <br />Little Maverick Mining Company reopened the mine under a prospect pemut (P-2005-008) in 2005. <br />Energy Fuels is currently conducting exploration activities under this permit through a lease <br />agreement with Little Maverick. Surface disturbance associated with exploration activities have <br />included opening up an access road, uncovering a buried concrete pad, and building a working pad <br />on top of the reclaimed waste pile (see Map C-lA). The mine portal was reclaimed with a bat gate; <br />therefore, no excavation was required to access the old workings. <br />•~ <br />Whirlwind Mine June 07 D-1 <br />