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 two factors will deepen the body colour even more. Anthracite budgerigar mutation The Anthracite budgerigar mutation is an extremely rare mutation that occurs in the budgerigar. The mutation, similar to the Violet budgerigar mutation, causes a difference in the coloring of budgerigars. Anthracites have black or very dark gray feathers, possibly with some white depending on the budgerigar in particular. The mutation is believed to have started in Germany, and tends to be local to that area. Currently, most owners wishing to obtain an Anthracite need to import these budgerigars from Germany. The description and genetic behaviour of the Anthracite