Equilibrium moisture
(7) Equilibrium moisture means the moisture in the coal as determined through ASTM standard D1412-93. (8) High-rank coals means anthracite, bituminous, and subbituminous A and B coals. (9) Low-rank coals means subbituminous C and lignite coals. (10) Slurry pond means any natural or artificial pond or lagoon used for the settlement and draining of the solids from the slurry resulting from the coal washing process. (11) Tipple coal means coal from a mine or loading facility that is ready for shipment.