Michael L. Biggs was the only person working as a wastewater treatment plant operator.
The data was gathered by the Mackinac Center for Public Policy. The Mackinac Center for Public Policy is a nonprofit research and educational institute.
Tuesday, September 16, 2025
Michael L. Biggs was the only person working as a wastewater treatment plant operator.
The data was gathered by the Mackinac Center for Public Policy. The Mackinac Center for Public Policy is a nonprofit research and educational institute.