42 U.S.C. § 13332. Coal-fired diesel engines

The Secretary shall conduct a program of research, development, demonstration, and commercial application for utilizing coal-derived liquid or gaseous fuels, including ultra-clean coal-water slurries, in diesel engines. The program shall address—

1. (1)
   (1)required engine retrofit technology;
2. (2)
   (2)coal-fuel production technology;
3. (3)
   (3)emission control requirements;
4. (4)
   (4)the testing of low-Btu highly reactive fuels;
5. (5)
   (5)fuel delivery and storage systems requirements; and
6. (6)
   (6)other infrastructure required to support commercial deployment.