| Ridge Township Quarry and Mill | 6.6 mi | Crushed, Broken Limestone NEC | Surface | Active |
| Ridge Township Quarry & Mill | 6.9 mi | Stone, Crushed/Broken | Surface | Plant |
| Rockford Stone Quarry | 7.4 mi | Stone, Crushed/Broken | Surface | Producer |
| Rockford Stone Quarry | 7.4 mi | Limestone, General | — | Past Producer |
| Walls Materials Plant 1 | 7.7 mi | Crushed, Broken Limestone NEC | Surface | Abandoned |
| Sulphur Sales Inc/ Middle Point, Oh | 8.9 mi | Sulfur | Processing Plant | Producer |
| Scott Quarry | 10.9 mi | Crushed, Broken Limestone NEC | Surface | Active |
| Scott Plant 0 | 11.8 mi | Magnesite | Surface | Plant |
| Delphos Plant | 12.4 mi | Crushed, Broken Limestone NEC | Surface | Abandoned |
| Suever Stone Quarry & Mill | 12.7 mi | Stone, Crushed/Broken | Surface | Plant |
| Pleasant Mills Quarry | 12.7 mi | Stone, Crushed/Broken | Surface | Producer |
| Us Aggregates-Pleasant Mills Quarry | 13.1 mi | Crushed, Broken Limestone NEC | Surface | Active |
| Delphos Quarry | 13.4 mi | Stone, Crushed/Broken | Surface | Producer |
| United Dredging Y102 | 14.0 mi | Construction Sand and Gravel | Surface | Active |
| Suever Stone Quarry | 15.1 mi | Limestone, General | — | Past Producer |
| Haviland Clay Mine | 15.2 mi | Sand and Gravel, Construction | — | Past Producer |
| Haviland Clay Mine | 15.2 mi | Sand and Gravel, Construction | Surface | Past Producer |
| Miller Brothers Clay Works | 16.1 mi | Clay | Surface | Plant |
| Miller Brothers Clay Pit | 16.1 mi | Clay | — | Past Producer |
| Sandkuhl Tile Co Pit | 17.0 mi | Clay | Surface | Producer |
| Sandkuhl Tiie Clay Pit | 17.0 mi | Clay | — | Past Producer |
| Decatur City Engr. | 17.2 mi | Stone | Surface | Producer |
| Con-Ag Inc | 18.4 mi | Crushed, Broken Limestone NEC | Surface | Abandoned |
| Weber Materials, Ltd | 18.4 mi | Crushed, Broken Limestone NEC | Surface | Active |
| Celina Quarry | 18.6 mi | Crushed, Broken Limestone NEC | Surface | Intermittent |
| Krick-Tyndall Pit | 18.7 mi | Clay | Surface | Past Producer |
| John W. Karch Quarry | 18.8 mi | Limestone, General | — | Past Producer |
| John W. Karch Quarry | 18.8 mi | Stone, Crushed/Broken | Surface | Producer |
| Cly Gravel Company | 19.0 mi | Sand and Gravel, Construction | Surface | Producer |
| Habig Trucking and Excavating | 19.1 mi | Sand and Gravel, Construction | Surface | Producer |
| Adams County Sand & Gravel Pit | 19.3 mi | Sand and Gravel, Construction | Surface | Producer |
| Adams City Highway Dept. | 21.0 mi | Stone | Surface | Producer |
| Baughman Clay Mine | 21.2 mi | Clay | — | Past Producer |
| Baughman Clay Mine | 21.2 mi | Clay | Surface | Past Producer |
| Con-Ag, Inc. | 21.3 mi | Stone, Crushed/Broken | Surface | Producer |
| Karch Stone Quarry | 21.3 mi | Stone, Crushed/Broken | Surface | Producer |
| Rimer Quarry | 21.5 mi | Stone, Crushed/Broken | Surface | Past Producer |
| Rimer Quarry | 21.5 mi | Limestone, General | — | Past Producer |
| Buckland Quarry | 21.6 mi | Limestone, General | — | Past Producer |
| Buckland Plant | 21.7 mi | Crushed, Broken Limestone NEC | Surface | Intermittent |
| Buckland Plant & Quarry | 21.8 mi | Stone, Crushed/Broken | Surface | Plant |
| Edgerton Quarry | 22.7 mi | Stone, Crushed/Broken | Surface | Producer |
| Woodburn Ii | 22.8 mi | Crushed, Broken Limestone NEC | Surface | Active |