These are a list of 4 mines in El Cajon.
| Name | Nearest Town | Type | More |
|---|---|---|---|
| Cajon Mine | San Bernardino CA | Common Clays NEC | View Details > |
| Cajon Pass Sand & Gravel | San Bernardino CA | Construction Sand and Gravel | View Details > |
| El Cajon Quarry | San Diego San Diego CA | Crushed, Broken Granite | View Details > |
| Sloan Canyon Plant | El Cajon San Diego CA | Construction Sand and Gravel | View Details > |