These are a list of 285 mines in Armstrong.
| Name | Nearest Town | Type | More |
|---|---|---|---|
| Stitt Mine | Ford City Armstrong PA | Crushed, Broken Limestone NEC | View Details > |
| Stitt Mine | Whitesburg Armstrong PA | Crushed, Broken Limestone NEC | View Details > |
| Stitt Mine | Kittanning Armstrong PA | Coal (Bituminous) | View Details > |
| Stitt No 1 Deep Mine | Kittanning Armstrong PA | Coal (Bituminous) | View Details > |
| Strongarm Strip | Snyderville Armstrong PA | Coal (Bituminous) | View Details > |
| Sunset Strip | Girty Armstrong PA | Coal (Bituminous) | View Details > |
| T & R #1 | Shelocta Armstrong PA | Coal (Bituminous) | View Details > |
| T & R #2 | Shelocta Armstrong PA | Coal (Bituminous) | View Details > |
| T.J.S. No. 4 | Elderton Armstrong PA | Coal (Bituminous) | View Details > |
| T.J.S. No. 5 Mine | Spring Church Armstrong PA | Coal (Bituminous) | View Details > |
| T.J.S. No. 6 Mine | Shelocta Armstrong PA | Coal (Bituminous) | View Details > |
| T.J.S. No. 7 Mine | Kittanning Armstrong PA | Coal (Bituminous) | View Details > |
| Tarrtown Plant | Tarrtown Armstrong PA | Construction Sand and Gravel | View Details > |
| Tarrtown Plant 1 | Kittanning Armstrong PA | Construction Sand and Gravel | View Details > |
| Templeton Mill | Armstrong PA | Fire Clay | View Details > |
| Tesab #623 Crusher | Armstrong Emmet IA | Construction Sand and Gravel | View Details > |
| Tidal | Tidal Armstrong PA | View Details > | |
| TJS #1 | Spring Church Armstrong PA | Coal (Bituminous) | View Details > |
| Tracy Lynne | Spring Church Armstrong PA | Coal (Bituminous) | View Details > |
| Triple K #1 | Ford City Armstrong PA | Coal (Bituminous) | View Details > |
| Trulick Mine | Cowansville Armstrong PA | Coal (Bituminous) | View Details > |
| Twin Oaks Surface Mines | Kittanning Armstrong PA | Coal (Bituminous) | View Details > |
| Val-Pat Strip | Armstrong PA | Coal (Bituminous) | View Details > |
| W A Cotterman Strip | Garretts Run Armstrong PA | Coal (Bituminous) | View Details > |
| Walter Houser Auger | Kittanning Armstrong PA | View Details > | |
| Walter L Houser Strip | Sunnyside Armstrong PA | Coal (Bituminous) | View Details > |
| Weimer #2 | Girty Armstrong PA | Coal (Bituminous) | View Details > |
| Wells No 1 Strip | Armstrong PA | Coal (Bituminous) | View Details > |
| West No 1 Strip | Armstrong PA | Coal (Bituminous) | View Details > |
| Western Allegheny Limestone Quarry | Armstrong PA | Crushed, Broken Limestone NEC | View Details > |
| White #2 | Maysville Armstrong PA | Coal (Bituminous) | View Details > |
| White No 1 Strip | Armstrong PA | Coal (Bituminous) | View Details > |
| Windber High Standard Coal Co | Avonmore Armstrong PA | Coal (Bituminous) | View Details > |
| Wolcott Strip | Armstrong PA | Coal (Bituminous) | View Details > |
| Young Mine | Distant Armstrong PA | Coal (Bituminous) | View Details > |