History of anthracite coal mining in Pennsylvania History of anthracite coal mining in Pennsylvania There are two types of coal found in Pennsylvania: anthracite (the “hard coal” found in Northeastern Pennsylvania below the Allegheny Ridge southwest to Harrisburg; also called “stone coal”, “rock coal” in the 1800s) and bituminous (“soft coal”, found west of the Allegheny Front escarpment). Anthracite coal is a natural mineral with a high carbon and energy content that gives off light and heat (produced energy) when burned, making it useful as a fuel. It was possibly first used in Pennsylvania as a fuel in 1769, but its real history begins with a documented
A Star Is Burns launch "The Critic" on Fox, and he thought having a film festival in Springfield would be a good way to introduce Sherman. After Brooks pitched the episode, the script was written by Ken Keeler. Although David Mirkin was executive producer for most of the sixth season, the episode was executive produced by Al Jean and Mike Reiss. Jay Sherman's appearance was Simpsonized: he was made yellow and given an overbite. The episode contains a meta-reference to the fact that it is a crossover episode in a conversation Bart has with Sherman: The joke was pitched by Al Jean. Alongside Jon