Big Muskie was a dragline excavator built by Bucyrus-Erie and owned by the Central Ohio Coal Company (formerly a division of American Electric Power), weighing 13,500 short tons (12,200Â t) and standing nearly 22 stories tall. It mined coal in the U.S. state of Ohio from 1969 to 1991. It was dismantled and sold for scrap in 1999.