Fort Seneca

Historical marker location:

5865 Fremont-Tiffin Rd., Fort Seneca, Ohio

( Marker is at the intersection of Fremont-Tiffin Road (Ohio Route 53) and Township Road 1020 on Fremont-Tiffin Road.)

Marker installed: 1987

Ohio played a key role in the development of the modern steel industry. Andrew Carnegie, one of the most famous industrialists of the late 19th and early 20th centuries, started his career in the steel industry in Pittsburgh, Pennsylvania, but his first major investment was in a steel mill in Braddock, Ohio.