Anthracite of anthracite coal consumed in the United States averages 25 million Btu/ton (29 MJ/kg), on the as-received basis (i.e., containing both inherent moisture and mineral matter). Since the 1980s, anthracite refuse or mine waste has been used for coal power generation in a form of recycling. The practice known as reclamation is being applied to culm piles antedating laws requiring mine owners to restore lands to their approximate original condition. Chemically, anthracite may be considered as a transition stage between ordinary bituminous coal and graphite, produced by the more or less complete elimination of the volatile constituents of the former,
History of anthracite coal mining in Pennsylvania British navy blockades through during the war, industrialist Josiah White set his mill supervisors the task of experimenting with Anthracite to get to ignite and burn in a useful way. In 1813, the first mining actually in the Lehigh Valley was begun at Beaver Meadows, however, because of the various struggles getting it the to Philadelphia and because it is far more difficult to ignite Anthracite with its sporadic and unreliable supply did not come to be generally used regularly until after the War of 1812 and Hazard and White showed the way. The developments of the canal and then