The Keeling Coal Company (1861-1878) was a 19th-century coal mining company in Allegheny County, Pennsylvania. Its mines were located in the Pittsburgh Coalfield of western Pennsylvania.
The Keeling Coal Company (1861-1878) was a 19th-century coal mining company in Allegheny County, Pennsylvania. Its mines were located in the Pittsburgh Coalfield of western Pennsylvania. (en)
The Keeling Coal Company (1861-1878) was a 19th-century coal mining company in Allegheny County, Pennsylvania. Its mines were located in the Pittsburgh Coalfield of western Pennsylvania. (en)