Energy Fuels Inc. (UUUU) and NexGen Energy (NXE) are expected to gain from the accelerating global shift toward nuclear energy as a clean power source. UUUU, with a market capitalization of $3.6 billion, is a leading U.S. producer of natural uranium concentrate and an emerging producer of rare earth elements (REEs). Vancouver, Canada-based NexGen Energy, valued at $5.11 billion, is an exploration and development stage company, which engages in the acquisition, exploration, evaluation and advancement of uran ...