History of anthracite coal mining in Pennsylvania in 1807 (Latzko, 3). In 1810, 350 tons of anthracite was mined in Pennsylvania. The use of anthracite coal was restricted due to the difficulties in transporting it efficiently, and the industry was still small and undeveloped (Latzko, 3). The War of 1812 against Great Britain increased the usage of anthracite coal. Prior to the war, citizens of the nation’s urban centers such as New York and Philadelphia received most of their coal fuel needs from Britain and Virginia’s bituminous coal supplies (Dublin, Licht, 12). During the war the British blockade of American ports severely limited the supply of British
Anthracite budgerigar mutation the Anthracite locus. This darkens the body colour to a shade somewhat deeper than a Dark Green. The DF Anthracite Light Green, with two Anthracite alleles, is a deep olive colour. In the blue series varieties the SF Anthracite Skyblue has one Anthracite allele and one wild-type allele, with a body colour rather like a deep Cobalt. The DF Anthracite Skyblue with two Anthracite alleles, the true Anthracite variety, has a dark grey, almost black, body colour with mauve overtones. Because the Anthracite factor is always visibly expressed no budgerigar can be split for Anthracite. The heterozygotes of Anthracite with