Lignite coals are more active than bituminous coals, which are more active than anthracite coals. The Appalachian Mountains contain major deposits of anthracite coal as well as bituminous coal. Anthracitization is the transformation of bituminous coal into anthracite. China and Russia supplied 47,395 tonnes of anthracite coal. The burning of harder, older anthracite and bituminous coal typically produces Class F fly ash. It is of higher quality than lignite coal but of poorer quality than anthracite. Energy needs are also met by importing bituminous and anthracite coal and crude petroleum. Hot blast allowed blast furnaces to use anthracite or lower grade coal. The roof liner was Alcantara in anthracite colour. Mining is important to the district with anthracite, coal and torbanite mined. The engine was fueled by anthracite coal. This union was distinguished as a labor union for workers mining anthracite coal. Africa accounted for about 5% of total world anthracite and bituminous coal production in 2005. The barley is dried in a closed kiln fired by natural gas (formerly anthracite coal). Their paddle-wheels, driven by steam engines that burned smokeless anthracite coal, could make .