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Pennsylvania, Pittsburgh, Pennsylvania, Pennsylvania, Pennsylvania, Pennsylvania, Pennsylvania, Pennsylvania, Pennsylvania, Allegheny County (Pa.), Broad Ford (Pa.), Bucks County (Pa.), Cerro de Pasco (Peru), Clairton (Pa.), Connellsville (Pa.), Downtown (Pittsburgh, Pa.), Kentucky, Monongahela River (W. Va. and Pa.), Monongahela River Valley (W. Va. and Pa.), Mount Pleasant (Westmoreland County, Pa. : Township), New Jersey, New York (N.Y.), Pennsylvania, Western, Pittsburgh (Pa.), Pocahontas Coal Seam (W. Va.), Virginia, West Overton (Pa.), West Virginia, Westmoreland County (Pa.)