Humboldt, IA Mines
Mines in Humboldt, Iowa
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Humboldt Quarry | Ft Dodge Ls | Unknown | Stone, Crushed | |
| Unknown | Humboldt County Highway Department | Unknown | Sand and Gravel | |
| Unknown | Welp And Mc Carten, Inc. | Unknown | Sand and Gravel | |
| Unknown | Unknown | Sand and Gravel | ||
| Unknown | Wright County Highway Department | Unknown | Sand and Gravel |