The Milford Mine produced high manganese-content iron ore[2] in Wolford Township, Minnesota, United States.

[3] Starting in 2010, the site has been under development by Crow Wing County as Milford Mine Memorial Park.

[4] It was nominated for its association with a significant event in Minnesota history, and for potential archaeological resources that could illuminate mining technology, the rise and fall of iron-ore mining on the Cuyuna Range, and the daily lives of its workers.

[3] The disaster occurred when a surface cave-in at the mine's easternmost end tapped into mud that was a direct connection to Foley Lake.

[3] Recovery efforts were both delicate and dangerous, as the mine was filled with mud and debris.

A. O. Preus appointed a five-man committee to investigate the disaster, which held hearings in May and June.