| Hardy Nickel Sulfide Mine | 1.2 mi | Sulfur, Iron, Nickel | — | Past Producer |
| Pool Deposit | 1.3 mi | | — | Past Producer |
| Pool Nickel Sulfide Mine | 1.4 mi | Sulfur, Iron, Nickel | — | Past Producer |
| Grannis Deposit | 1.6 mi | | Surface-Underground | Past Producer |
| Grannis Nickel Sulfide Mine | 1.6 mi | Sulfur, Iron, Nickel | — | Past Producer |
| Quarry | 1.8 mi | Stone, Dimension | Surface | Past Producer |
| Curtis Nickel Sulfide Prospect | 1.9 mi | Sulfur, Iron, Nickel | — | Past Producer |
| Curtis Deposit | 1.9 mi | | Surface | Past Producer |
| Buck Deposit | 2.0 mi | | Surface-Underground | Past Producer |
| Buck Nickel Sulfide Mine | 2.1 mi | Iron, Sulfur, Nickel | — | Past Producer |
| Nickel Sulfide Prospect No. Fj-007 | 2.3 mi | Sulfur, Iron, Nickel | — | Occurrence |
| Mitchell Nickel Sulfide Mine | 2.3 mi | Sulfur, Iron, Nickel | — | Past Producer |
| Crissey Granite Gneiss Rock Quarry | 2.5 mi | Stone, Dimension | — | Occurrence |
| Gneiss Rock Quarry No. Ei-013 | 2.6 mi | Stone | — | Past Producer |
| Nickel Sulfide Prospect No. Fj-009 | 2.6 mi | Sulfur, Iron, Nickel | — | Occurrence |
| Bogue Mill | 3.3 mi | Construction Sand and Gravel | Surface | Active |
| Hardy Deposit | 3.5 mi | | Underground | Past Producer |
| Granite Quarry | 4.0 mi | Granite | Surface | Past Producer |
| Comstock Biotite Granite Rock Prospect | 4.0 mi | Stone | — | Occurrence |
| Comstock Prospect | 4.6 mi | Granite | — | Prospect |
| Pine Valley Materials, Llc | 4.9 mi | Crushed, Broken Stone NEC | Surface | Intermittent |
| Portable Crusher #8 | 5.3 mi | Crushed, Broken Limestone NEC | Surface | Intermittent |
| Soapstone Rock Quarry No. Ei-012 | 5.4 mi | Stone, Dimension | — | Past Producer |
| Soapstone Quarry | 5.5 mi | Stone, Dimension | Surface | Past Producer |
| Cattey Pit | 5.6 mi | Sand and Gravel, Construction | Surface | Past Producer |
| Coe Road Pit | 5.7 mi | Sand and Gravel, Construction | Surface | Past Producer |
| Mount Prospect | 5.9 mi | Nickel | — | Past Producer |
| Mount Prospect | 5.9 mi | Nickel | — | Prospect |
| Gneiss Rock Quarry No. Fi-012 | 6.2 mi | Stone | — | Past Producer |
| Bethmor Mine | 6.2 mi | Sand and Gravel, Construction | Surface | Producer |
| Marble Rock Quarries No. Fj-019 | 6.5 mi | Stone, Dimension | — | Past Producer |
| Costello Quarry | 6.5 mi | Granite | Surface | Past Producer |
| Benedict Granite Gneiss Rock Quarry | 6.5 mi | Stone, Dimension | — | Past Producer |
| Costello Granite Gneiss Rock Quarry | 6.5 mi | Stone, Dimension | — | Past Producer |
| Marble Rock Quarries No. Fj-019 | 6.5 mi | Marble, Dimension | Surface | Past Producer |
| Michiel Quarry | 6.6 mi | Granite | Surface | Past Producer |
| Benedict Quarry | 6.6 mi | Granite | Surface | Past Producer |
| Silver Mine | 6.7 mi | Silver | Surface | Past Producer |
| Michiel Granite Gneiss Rock Quarries | 6.7 mi | Stone, Dimension | — | Past Producer |
| Mascetti Quarry | 6.8 mi | Granite | Surface | Past Producer |
| Mascetti Granite Gneiss Rock Quarry | 6.9 mi | Stone, Dimension | — | Past Producer |
| Limestone Quarries | 6.9 mi | Limestone, Dimension | Surface | Past Producer |
| Granite Gneiss Rock Quarries No. Ei-008 | 6.9 mi | Stone | — | Past Producer |
| Hornblende Gneiss Quarry | 7.0 mi | Stone, Dimension | Surface | Past Producer |
| Hornblende Gneiss Quarry No. Fj-020 | 7.0 mi | Stone | — | Past Producer |
| Gneiss Rock Quarry No. Ei-004 | 7.1 mi | Stone | — | Past Producer |
| Hodges Nickel and Sulfide Prospect | 7.1 mi | Copper, Nickel, Sulfur | — | Occurrence |
| Northwestern Pit | 7.2 mi | Sand and Gravel, Construction | Surface | Producer |
| Iffland Pit | 7.3 mi | Sand and Gravel, Construction | Surface | Producer |
| Bogue Pit | 7.4 mi | Sand and Gravel, Construction | Surface | Producer |
| Torrington Borough Granite Gneiss Rock Quarry | 7.6 mi | Stone, Crushed/Broken | — | Past Producer |
| Torrington Borough Quarry | 7.7 mi | Granite | Surface | Past Producer |
| Unnamed Magnetite Occurrence | 7.8 mi | Iron | — | Occurrence |
| Magnetite Mine | 7.8 mi | Iron | Surface | Past Producer |
| Iffland Pit | 8.0 mi | Sand and Gravel, Construction | — | Past Producer |
| Building Materals, Inc. Pit | 8.0 mi | Sand and Gravel, Construction | Surface | Past Producer |
| Building Materals, Inc. Pit | 8.0 mi | Sand and Gravel, Construction | — | Past Producer |
| North Marble Quarries | 8.2 mi | Marble, Dimension | Surface | Past Producer |
| Pyrite Occurrence No. Fj-022 | 8.3 mi | Sulfur-Pyrite | — | Occurrence |
| Buck Hill Magnetite Mine | 8.3 mi | Iron | — | Prospect |
| Gneiss Quarry | 8.3 mi | Granite | Surface | Past Producer |
| Buck Hill Iron Prospect | 8.5 mi | Iron | Surface | Past Producer |
| Magnetite Mine | 8.5 mi | Iron | Surface | Past Producer |
| Soapstone Quarry | 8.5 mi | Talc-Soapstone | Surface | Past Producer |
| Graphite Mines | 8.8 mi | Graphite | Surface | Past Producer |
| South Marble Quarries | 9.0 mi | Marble, Dimension | Surface | Past Producer |
| Mica/quartzite/hornblende Quarry | 9.0 mi | Stone, Dimension | Surface | Past Producer |
| Marble Rock Quarries No. Fj-021 | 9.1 mi | Stone, Dimension | — | Past Producer |
| Portable Crusher #7 | 9.1 mi | Crushed, Broken Stone NEC | Surface | Intermittent |
| Portable Pegson Crusher | 9.1 mi | Crushed, Broken Stone NEC | Surface | Intermittent |
| Mica Quartzite Or Hornblende Gneiss Quarry No. Fj-023 | 9.1 mi | Stone | — | Past Producer |
| Green Mountain Feldspar and Mica Mine | 9.2 mi | Feldspar, Mica | — | Past Producer |
| Green Mountain Mine | 9.2 mi | | Surface | Prospect |
| Stanley Works Bank | 9.3 mi | Sand and Gravel, Construction | Surface | Past Producer |
| Pine Valley Dredge | 9.4 mi | Sand and Gravel, Construction | Offshore | Past Producer |
| Marble Quarry | 9.5 mi | Marble, Dimension | Surface | Past Producer |
| Silver Mine | 10.0 mi | Silver | Surface | Past Producer |
| Quarry | 10.0 mi | Stone, Dimension | Surface | Past Producer |
| Granitic Gneiss Rock Quarry No. Ei-005 | 10.0 mi | Stone | — | Past Producer |
| Soapstone Quarry No. Ei-006 | 10.0 mi | Stone | — | Past Producer |
| Drzal Pit | 10.0 mi | Sand and Gravel, Construction | Surface | Producer |
| Gneiss Quarry | 10.0 mi | Granite | Surface | Past Producer |
| Lead Mine | 10.1 mi | Lead | Surface | Past Producer |
| Kaolin Mine | 10.3 mi | Kaolin | Surface | Past Producer |
| Gold Mine | 10.4 mi | Gold | Surface | Past Producer |
| Kent Mine | 10.4 mi | Iron | Surface | Past Producer |
| Dorvel Metallurgical/harwinton, Ct. | 10.4 mi | Copper | Processing Plant | Plant |
| Quarry | 10.6 mi | Stone, Dimension | Surface | Past Producer |
| Thomaston Fluorite and Sulfide Occurrence | 10.7 mi | Iron, Fluorine-Fluorite, Lead | — | Occurrence |
| Kent Limonite Mine | 10.9 mi | Iron, Manganese | — | Past Producer |
| Schist Quarry | 10.9 mi | Stone, Dimension | Surface | Past Producer |
| Aj Resources | 10.9 mi | Crushed, Broken Stone NEC | Surface | Intermittent |
| Nutmeg Pit | 11.3 mi | Sand and Gravel, Construction | Surface | Producer |
| Granitic Rock Quarry No. Ej-003 | 11.4 mi | Stone | — | Past Producer |
| Roebling Mica-Feldspar-Beryl Mine | 11.5 mi | | Surface-Underground | Past Producer |
| Roebling Mica, Feldspar, Beryl Mine | 11.5 mi | Mica, Feldspar, Gemstone | — | Past Producer |
| Plymouth Granitic Rock Quarry | 11.9 mi | Stone, Dimension | — | Past Producer |
| Judds Bridge Kyanite Prospects | 11.9 mi | Kyanite | — | Occurrence |
| Plymouth Quarry | 12.0 mi | Granite | Surface | Past Producer |
| Quartzite Quarry | 12.2 mi | Stone, Dimension | Surface | Past Producer |