subbituminous C coal

n
the rank of coal, within the subbituminous class of Classification D388, such that, on the moist, mineral-matter-free basis, the gross calorific value of the coal in British thermal units per pound is equal to greater than 8300 (19.31 Mj/kg) but less than 9500 (22.10 Mj/kg), and the coal is nonagglomerating.

ASTM D121-09a Standard Terminology of Coal and Coke. 2014.

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