Hearings to examine the Department of the Interior's final list of critical minerals for 2018 and opportunities to strengthen the United States' mineral security. "The Future of Fossil: Energy Technologies Leading the Way" Witnesses: Dr. Roger Aines Senior Scientist, Atmospheric, Earth and Energy Division, Lawrence Livermore National Laboratory; Dr. Klaus Brun, Program Director, Machinery Program, Fluids & Machinery Engineering Department, Southwest Research Institute; Ms.