42 U.S. Code § 13340. Low-rank coal research and development

The Secretary shall pursue a program of research and development with respect to the technologies needed to expand the use of low-rank coals which take into account the unique properties of lignites and sub-bituminous coals, including, but not limited to, the following areas—
high value-added carbon products;
fuel cell applications;
emissions control and combustion efficiencies;
coal water fuels and underground coal gasification;
distillates; and
any other technologies which will assist in the development of niche markets for lignites and sub-bituminous coals.