Armstrong, IA Mines
Mines in Armstrong, Iowa
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Gaarde Pit | Emmet County | Unknown | Sand and Gravel | |
| Hoien Gravel Pit | Hoien Gravel Co | Unknown | Sand and Gravel | |
| Kossuth County Pit | Kossuth County Highway Department | Unknown | Sand and Gravel | |
| Unknown | Unknown | Sand and Gravel | ||
| Unknown | Unknown | Sand and Gravel | ||
| Unknown | Unknown | Sand and Gravel | ||
| West Pit | Unknown | Sand and Gravel |