Bay Furnace was a town in Alger County, Michigan west of Munising, Michigan. It was established in 1869 around a blast furnace run by the Bay Furnace Company and used to make iron ore into pig iron.[1]
The town that was established around the furnace was originally named Onota. The name changed later to Bismark, and then changed again to Bay Furnace. The town had a population of approximately 500.[2]
When Schoolcraft County was established out of Marquette County, Bay Furnace was its county seat. In 1885, Bay Furnace was reorganized into the newly established Alger County.[2]
The town was destroyed by an accidental fire started by a wagonload of charcoal on May 31, 1877. The furnace and surrounding land were given to the United States Forest Service in 1940.[2]