"Coke" means a fused, cellular, porous structure that remains after free moisture and the major portion of the volatile materials have been distilled from bituminous coal and other carbonaceous material by the application of heat in the absence of air or in the presence of a limited supply of air.
N.H. Admin. Code § Env-A 1302.09
(See Revision Note at chapter heading for Env-A 1300) #9803, eff 10-31-10