Manufacture of coke oven products

This sub-class includes: - the operation of coke ovens chiefly for the production of coke or semi-coke from hard coal and/or lignite; production of retort carbon and/or residual products such as coal tar or pitch - agglomeration of coke - production of: coke, semi-coke, pitch, pitch coke, coke oven gas, crude coal and/or lignite tars