History of anthracite coal mining in Pennsylvania increasing production levels but an overall trend of falling prices. In 1830 anthracite coal was selling for $11 per ton, in 1840 it was $7 per ton, and by 1860 it was $5.50 a ton in NYC, while total production was increasing (Adams, “US Coal Industry”). This was due in part to a general anti-charter sentiment towards the coal industry by the Pennsylvania state government, making it difficult for coal corporations to receive charters (Adams, “Different Charters”), as well as a seasonal market that experienced fluctuation in demand for anthracite (Dublin, Licht, 17). The onset of the war brought an
Anthracite budgerigar mutation the strain and continues to report on its development. Initially found only in Germany, by the end of 2008 descendents of this original mutation had been exported to America, Belgium, Canada, England, Finland, Holland, Italy, Norway, Sweden, Switzerland and Pakistan. The Anthracite mutation has an incompletely dominant relationship with its wild-type allele. That is, it shows a visible effect when present as a single factor (heterozygote or SF) and a different effect when present as a double factor (homozygote or DF). In the green series varieties the SF Anthracite Light Green has one Anthracite allele and one wild-type allele at