30 C.F.R. § 77.301 Dryer heating units; operation.
Title 30 - Mineral Resources
(a) Dryer heating units shall be operated to provide reasonably complete combustion before heated gases are allowed to enter hot gas inlets. (b) Dryer heating units which are fired by pulverized coal, shall be operated and maintained in accordance with the recommended standards set forth in the National Fire Protection Association Handbook, 12th Edition, Section 9, “Installation of Pulverized Fuel Systems,” 1962.
Title 30: Mineral Resources
PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
Subpart D—Thermal Dryers
§ 77.301 Dryer heating units; operation.

