sub-bituminous coal definition
sub-bituminous coal means coal that is classified as sub-bituminous A, B, or C according to the American Society of Testing and Materials (ASTM) Standard Specification for Classification of Coals by Rank D388.
sub-bituminous coal. ’ means a class of coal having heat values, calculated on an ash-free basis, typically ranging from 19,000 to 24,000 kJ/kg, primarily used as fuel for power generation and industrial steam purposes.
sub-bituminous coal means coal having a gross specific energy of: