Anthracite mined on the generally flat lying and undeformed sedimentary rocks further west on the Allegheny Plateau of Kentucky and West Virginia, Eastern Ohio, and Western Pennsylvania. In the same way the anthracite region of South Wales is confined to the contorted portion west of Swansea and Llanelli, the central and eastern portions producing steam coal, coking coal and domestic house coals. Structurally, anthracite shows some alteration by the development of secondary divisional planes and fissures so that the original stratification lines are not always easily seen. The thermal conductivity is also higher; a lump of anthracite feels perceptibly colder when
History of anthracite coal mining in Pennsylvania are surrounded by sandstone ridges, which help to “protect” the anthracite (Hornberger et al., 20-2). There are four different anthracite coalfields in Pennsylvania, all located on the eastern side of the state. The Northern field is located predominantly in the Luzerne, Lackawanna, Susquehanna and Wayne Counties; the Western Middle field in Northumberland, Columbia, and Schuylkill Counties; Eastern Middle field mainly in Luzerne County but extending into Schuylkill, Carbon, and Columbia Counties; the Southern field in Carbon, Schuylkill, Lebanon, and Dauphin Counties (Latzko, 8). Anthracite differs from bituminous in usage in that it has better heat quality and fewer disadvantageous by-products,