NexGen's 64% owned subsidiary, IsoEnergy ( holds a highly prospective portfolio of uranium exploration projects in the historic Eastern Athabasca Basin. This includes a 100%-interest in the Thorburn Lake property located just 7 km east of and on trend with Cameco's Cigar Lake mine which contains proven reserves of 233,600 tonnes at 22.31% U3O8 and probable reserves of 303,500 tonnes at 15.22% U3O8, which yields 216.7 million pounds of U3O8 in the Proven and Probable mineral reserves category ( IsoEnergy trades on the TSX Venture Exchange under the symbol "ISO".