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
Coal-fired pizza Coal-fired pizza Coal-fired pizza is a pizza style in the United States. New York-style pizza and New Haven-style pizza are often cooked in coal-fired pizza ovens. A coal-fired oven can reach and cook a pie in two to three or five minutes. Pizzarias outside of the Northeastern United States that feature coal-fired oven are uncommon enough to be noted in travel guides: for instance, Black Sheep Pizza with the first coal-fired oven in Minneapolis, or URBN in San Diego. As of 2007, coal-fired ovens were quite uncommon in the Western United States with only five west of the Mississippi: four