These are a list of 11 mines in Harmon.
| Name | Nearest Town | Type | More |
|---|---|---|---|
| Acme Salt Mine | Harmon OK | Salt, Brine Evaporated | View Details > |
| Elm Creek Mine | Erick Harmon OK | Construction Sand and Gravel | View Details > |
| HARMON | St. Johns Clinton MI | Construction Sand and Gravel | View Details > |
| Harmon #2 | Pikeville Pike KY | Coal (Bituminous) | View Details > |
| Harmon Branch Auger | Thorpe Mcdowell WV | Coal (Bituminous) | View Details > |
| Harmon Coal Company | Mcwilliams Armstrong PA | Coal (Bituminous) | View Details > |
| Harmon No 3 (Strip) | Washington PA | Coal (Bituminous) | View Details > |
| Harmon No 3 Auger | Washington PA | Coal (Bituminous) | View Details > |
| Harmon Road | Dixon Lee IL | Construction Sand and Gravel | View Details > |
| Harmon Strip | Armstrong PA | Coal (Bituminous) | View Details > |
| Harmon Strips #2 | Stump Creek Jefferson PA | Coal (Bituminous) | View Details > |