. . . . . . . . "Advancing coal research and development for a secure energy future hearing before the Subcommittee on Energy and Environment, Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, Thursday, October 13, 2011"@en . . . "Advancing coal research and development for a secure energy future : hearing before the Subcommittee on Energy and Environment, Committee on Science, Space, and Technology, House of Representatives, One Hundred Twelfth Congress, first session, Thursday, October 13, 2011"@en . . . . .