Zeigler Coal Company was a United States coal producer operating primarily in Illinois. The company managed underground coal mines supplying regional power plants and industrial consumers. Rail connections supported distribution across the Midwest. Zeigler Coal Company contributed to Illinois Basin coal production history.

Zeigler Coal Company was founded in 1903 in Illinois.

The company developed underground coal mines in the Illinois Basin during the 20th century.

In 1999, Zeigler Coal Company was acquired by Horizon Natural Resources.

Primary Mining Regions
Zeigler Coal Company operated in Illinois Basin coal districts, primarily in southern Illinois.

Infrastructure and Processing Facilities
Underground mining operations were supported by preparation plants and rail systems serving Midwest utilities.

Strategic Geographic Advantage
Illinois Basin location strengthened integration with regional power generation and industrial markets.

In 2024, legacy Zeigler Coal Company assets remained integrated within Illinois Basin coal management frameworks.

Regional oversight emphasized infrastructure monitoring and regulatory compliance within former underground mining districts.

In 2025, continued monitoring aligns with responsible land stewardship and regional energy supply integration.