Mines in St. Lawrence County, New York
368Total
22Active
St. Lawrence County, New York has 368 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 22 of these are currently active mining operations. The most commonly recorded commodity is construction sand and gravel, with 28 sites. The table below lists all recorded mines in the county with links to individual site details.
All Mines in St. Lawrence County
| Mine | Commodity | Type | Status | Source |
|---|---|---|---|---|
| Balmat Mining Operations | Wollastonite | Facility | Active | MSHA |
| Empire State Mines | Lead-Zinc Ore | Underground | Active | MSHA |
| Ogdensburg Plant | Crushed, Broken Limestone NEC | Surface | Active | MSHA |
| Balmat - Edwards District | Zinc | Surface-Underground | Producer | MRDS |
| Barraford Pit | Stone, Crushed/Broken | Surface | Producer | MRDS |
| Bicknell Brothers S & G Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Elmer Randall Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Elmer Randall Pits | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Frank Randall Pit No. 1 | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Gales Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Gouverneur Quarry | Stone, Crushed/Broken | Surface | Producer | MRDS |
| Norwood Quarry | Stone, Crushed/Broken | Surface | Producer | MRDS |
| Number 2 Mine | Talc-Soapstone | Surface | Producer | MRDS |
| Ogdenburg Stone and Asphalt, Inc. | Stone, Crushed/Broken | Surface | Producer | MRDS |
| Ogdensburg Quarry | Stone, Crushed/Broken | Surface | Producer | MRDS |
| Pit No. 2 | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Spragueville Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Stout Gravel Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Stout Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Town of Hopkinton | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Town of Madrid Gravel Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Vader Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Van Kennen Pit | Sand, Common | Surface | Intermittent | MSHA |
| (Facility) Alcoa Massena Smelter | Aluminum, Contained or Metal | Processing Plant | Plant | MRDS |
| 2017 Sandvik Crusher Qh331 | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Allen Farm Deposit | Iron | Occurrence | MRDS | |
| Allen Farm Prospects | Prospect | MRDS | ||
| Anderson Deposit | Iron | Occurrence | MRDS | |
| Anthony Mine | Iron | Occurrence | MRDS | |
| Archie Downing Farm Ppt. | Lead | Underground | Prospect | MRDS |
| Arnold Mine | Talc-Soapstone | Past Producer | MRDS | |
| Arnold Mine | Talc-Soapstone | Underground | Past Producer | MRDS |
| Austin Western 15x24 Jaw Crshr #1524112 | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Balmat No. 2, 3, and 4 Mines | Zinc | Surface-Underground | Past Producer | MRDS |
| Barrett Quarry | Dolomite | Past Producer | MRDS | |
| Benson Mine | Crushed, Broken Granite | Surface | Intermittent | MSHA |
| Benson Mine and Mill | Iron | Past Producer | MRDS | |
| Benson Mines | Iron | Past Producer | MRDS | |
| Benson Mines | Iron | Surface | Past Producer | MRDS |
| Benson's Pit | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Bicknell Brothers S & G Pit & Mill | Sand and Gravel, Construction | Past Producer | MRDS | |
| Bliss-Murphy Claim | Iron | Prospect | MRDS | |
| Brandy Brook Anomaly | Underground | Occurrence | MRDS | |
| Brandy Brook Northwest Occurrence | Iron | Occurrence | MRDS | |
| Brandy Brook Southeast Occurrence | Iron | Occurrence | MRDS | |
| Brick Chapel Prospect | Sulfur-Pyrite | Occurrence | MRDS | |
| Brick Chapel Prospect | Sulfur | Surface | Occurrence | MRDS |
| Brown Deposit | Lead | Past Producer | MRDS | |
| Brown's School Prospect | Talc-Soapstone | Prospect | MRDS | |
| Brunner Hill Occurrence | Iron | Occurrence | MRDS | |
| Brunner Hill Prospect | Underground | Occurrence | MRDS | |
| Burntbridge Pond Anomaly | Underground | Occurrence | MRDS | |
| Burntbridge Pond Occurrence | Iron | Occurrence | MRDS | |
| Cracker Box Pit | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Caledonia Mine | Surface | Past Producer | MRDS | |
| Caledonia Prospect | Sulfur-Pyrite | Occurrence | MRDS | |
| Callahan Quarry | Marble, Dimension | Past Producer | MRDS | |
| Catamount Ridge Quarry | Crushed, Broken Limestone NEC | Surface | Intermittent | MSHA |
| Chapel Hill | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Charlies Pit | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Clafin School Deposit | Surface-Underground | Prospect | MRDS | |
| Clafin School Occurrence | Iron | Occurrence | MRDS | |
| Clark Mine | Underground | Past Producer | MRDS | |
| Clarkson Quarry | Stone, Crushed/Broken | Past Producer | MRDS | |
| Clifton Deposit | Surface-Underground | Past Producer | MRDS | |
| Clifton Mine | Iron | Past Producer | MRDS | |
| Coal Hill Deposit | Lead | Past Producer | MRDS | |
| Coal Hill Mine | Lead | Surface | Past Producer | MRDS |
| Cole Mine | Sulfur-Pyrite | Past Producer | MRDS | |
| Cole Mine | Sulfur | Underground | Past Producer | MRDS |
| Commander 5702899 | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Cook Pit | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Cook Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Cook Pit and Plant | Sand and Gravel, Construction | Past Producer | MRDS | |
| Cooke Sand & Gravel Inc | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Corrigan McKinney Quarry | Marble, Dimension | Past Producer | MRDS | |
| County Route 47 Pit | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Cracker Box Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Crane Pond Pit | Sand, Common | Surface | Intermittent | MSHA |
| Cullens Process Sand & Gravel | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Davidson Bros. Marble Quarry | Marble, Dimension | Past Producer | MRDS | |
| De Kalb Deposit | Feldspar | Past Producer | MRDS | |
| De Kalb Junction Mine | Feldspar | Underground | Past Producer | MRDS |
| Dead Creek Deposits | Occurrence | MRDS | ||
| Dead Creek Occurrence | Iron | Occurrence | MRDS | |
| Deerlick Rapids Occurrence | Iron | Occurrence | MRDS | |
| Deerlick Rapids Prospect | Occurrence | MRDS | ||
| Devils Elbow | Iron | Occurrence | MRDS | |
| Devils Elbow Deposit | Surface | Prospect | MRDS | |
| Diana Complex | Occurrence | MRDS | ||
| Dillon Pond Prospect | Iron | Underground | Prospect | MRDS |
| Dominion Mine | Talc-Soapstone | Underground | Past Producer | MRDS |
| Downing Prospect | Lead | Past Producer | MRDS | |
| E. E Stevens Quarry | Marble, Dimension | Past Producer | MRDS | |
| East Bigelow Deposit | Lead | Past Producer | MRDS | |
| East Bigelow School Prospect | Lead | Surface | Prospect | MRDS |
| East Part Mine | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| East Pitcairn Fluorite Deposit | Fluorine-Fluorite | Occurrence | MRDS | |
| East Pitcairn Gypsum Deposit | Gypsum-Anhydrite | Occurrence | MRDS | |
| Edwards Mine | Zinc | Underground | Past Producer | MRDS |
| Edwards Pit | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Elmdale Graphite Deposit | Graphite | Occurrence | MRDS | |
| Elmer Randall Pits | Sand and Gravel, Construction | Past Producer | MRDS | |
| F.e. Turner Deposit | Lead | Past Producer | MRDS | |
| Farr Mine | Sulfur | Underground | Prospect | MRDS |
| Farr Prospect | Sulfur-Pyrite, Iron, Pig Iron | Occurrence | MRDS | |
| Fern Anomaly | Underground | Occurrence | MRDS | |
| Fern Occurrence | Iron | Occurrence | MRDS | |
| Fine Deposit | Feldspar | Prospect | MRDS | |
| Finlay 40/30 #573 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Folsom Place Prospect | Iron | Prospect | MRDS | |
| Gardenscape of New York | Crushed, Broken Limestone NEC | Surface | Intermittent | MSHA |
| Georgiana Slate Iron Occurrence | Iron | Occurrence | MRDS | |
| Georgiana Slate Occurrence | Iron | Occurrence | MRDS | |
| Gouverneur #1 Talc Mine & Mill | Talc-Soapstone | Underground | Past Producer | MRDS |
| Gouverneur #3 Talc Mine & Mill | Talc-Soapstone | Underground | Plant | MRDS |
| Gouverneur Garnet Mine | Garnet | Past Producer | MRDS | |
| Gouverneur Marble Co. Quarry | Marble, Dimension | Past Producer | MRDS | |
| Gouverneur Quarry | Limestone, General | Past Producer | MRDS | |
| Gouverneur Talc Deposit | Talc-Soapstone | Occurrence | MRDS | |
| Grass Pond Anomaly | Occurrence | MRDS | ||
| Grass Pond Occurrence | Iron | Occurrence | MRDS | |
| Green Farm Deposit | Iron | Past Producer | MRDS | |
| Green Farm Deposit | Surface-Underground | Past Producer | MRDS | |
| Griffin Park Deposit | Occurrence | MRDS | ||
| Hardwood Mill Deposit | Underground | Occurrence | MRDS | |
| Hardwood Mill Occurrence | Iron | Occurrence | MRDS | |
| Hays Pit | Sand and Gravel, Construction | Past Producer | MRDS | |
| Hays Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Hendricks Mine | Sulfur | Surface-Underground | Prospect | MRDS |
| Henricks Prospect | Sulfur-Pyrite | Occurrence | MRDS | |
| Hollywood Club Anomaly | Occurrence | MRDS | ||
| Hollywood Club Occurrence | Iron | Occurrence | MRDS | |
| Howard's Quarry | Dolomite | Past Producer | MRDS | |
| Howard's Quarry | Dolomite | Past Producer | MRDS | |
| Huckleberry Mountain Talc Deposit | Talc-Soapstone | Occurrence | MRDS | |
| Huckleberry Mountain Talc Deposits | Talc-Soapstone | Occurrence | MRDS | |
| Huggard Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Huggard Pit and Mill | Sand and Gravel, Construction | Past Producer | MRDS | |
| Hyatt Mine | Zinc | Underground | Past Producer | MRDS |
| International Pulp Co Shaft #1 | Talc-Soapstone | Underground | Past Producer | MRDS |
| International Pulp Co Shaft #2 | Talc-Soapstone | Underground | Past Producer | MRDS |
| International Pulp Co Shaft #3 | Talc-Soapstone | Underground | Past Producer | MRDS |
| International Pulp Co Shaft #4 | Talc-Soapstone | Underground | Past Producer | MRDS |
| International Talc Co 5 Mine | Talc-Soapstone | Past Producer | MRDS | |
| International Talc Co Mine 4 | Talc-Soapstone | Past Producer | MRDS | |
| International Talc Co. 2 1/2 Mine | Talc-Soapstone | Past Producer | MRDS | |
| International Talc Co. 3 Mine | Talc-Soapstone | Past Producer | MRDS | |
| Iron Pond Deposit | Iron | Occurrence | MRDS | |
| Jaruis Bridge Occurrence | Iron | Occurrence | MRDS | |
| Jarvis Bridge Deposit | Occurrence | MRDS | ||
| Jarvis Bridge Extension | Iron | Occurrence | MRDS | |
| Jarvis Bridge Extension | Occurrence | MRDS | ||
| Jayville Deposit | Surface-Underground | Past Producer | MRDS | |
| Jayville Mines | Iron | Past Producer | MRDS | |
| John J. Sullivan Property Deposit | Limestone, Dimension | Surface | Past Producer | MRDS |
| Johnson Mine | Talc-Soapstone | Past Producer | MRDS | |
| Jones & Laughlin Ore Concentrator | Iron | Processing Plant | Plant | MRDS |
| Jones Deposit | Lead | Underground | Past Producer | MRDS |
| Jones Prospect | Lead | Past Producer | MRDS | |
| Kearney Mine | Surface-Underground | Past Producer | MRDS | |
| Kilburn Mine | Sulfur | Occurrence | MRDS | |
| Kilburn Prospect | Sulfur-Pyrite, Iron, Pig Iron | Occurrence | MRDS | |
| Knapps Quarry | Crushed, Broken Limestone NEC | Surface | Abandoned | MSHA |
| L.v.hurlburt Deposit | Feldspar | Surface | Past Producer | MRDS |
| La Rue Pit | Sand and Gravel, Construction | Past Producer | MRDS | |
| La Rue Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Lake Marian Occurrence | Iron | Occurrence | MRDS | |
| Lake Marian Prospects | Surface | Prospect | MRDS | |
| Lake Ozonia | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Langevin Pit | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Little River Prospect | Sulfur-Pyrite | Occurrence | MRDS | |
| Little River Prospect | Sulfur | Prospect | MRDS | |
| Long Pond Deposit | Iron | Occurrence | MRDS | |
| Loomis 1 Mine | Talc-Soapstone | Occurrence | MRDS | |
| Loup Prospect | Iron | Prospect | MRDS | |
| Lowden Mine | Iron | Past Producer | MRDS | |
| Lux Quarry | Marble, Dimension | Past Producer | MRDS | |
| Macomb Mine | Lead | Underground | Past Producer | MRDS |
| Macomb Prospect | Lead | Past Producer | MRDS | |
| Madrid Quarry | Dolomite | Past Producer | MRDS | |
| Mc Collum Farm Prospect | Iron | Occurrence | MRDS | |
| Mc Conville Inc. Quarry | Dolomite | Past Producer | MRDS | |
| Mc Gill Occurrence | Zinc | Occurrence | MRDS | |
| McCollum Farm Deposit | Prospect | MRDS | ||
| Michaud Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Middle Bigelow School Prospect | Lead | Surface | Prospect | MRDS |
| Mine Number 1 and Mill | Talc-Soapstone | Past Producer | MRDS | |
| Mineral Point Deposit | Lead | Occurrence | MRDS | |
| Mitchell Mine | Sulfur | Underground | Prospect | MRDS |
| Mitchell Prospect | Sulfur-Pyrite, Iron, Pig Iron | Occurrence | MRDS | |
| Morley Quarry | Stone, Crushed/Broken | Past Producer | MRDS | |
| Mott Pit and Plant | Sand and Gravel, Construction | Past Producer | MRDS | |
| No. 3 Mill | Talc | Facility | Abandoned | MSHA |
| Nornberg Portable Crusher #2 | Crushed, Broken Marble | Facility | Abandoned | MSHA |
| Nelson Farm Deposit | Lead | Surface | Past Producer | MRDS |
| Nelson Prospect | Lead | Occurrence | MRDS | |
| Newton Hill Mine and Prospects | Talc-Soapstone | Past Producer | MRDS | |
| Nickerson Quarry | Marble, Dimension | Past Producer | MRDS | |
| North Country Mine | Dimension Stone NEC | Surface | Abandoned | MSHA |
| North Mine | Lead | Surface | Past Producer | MRDS |
| North Russell Deposit | Molybdenum | Occurrence | MRDS | |
| Norwood Quarry | Limestone, General | Past Producer | MRDS | |
| Norwood Quarry | Crushed, Broken Limestone NEC | Surface | Intermittent | MSHA |
| Number 2 Mine | Talc-Soapstone | Past Producer | MRDS | |
| Number 3 Mine | Talc-Soapstone | Past Producer | MRDS | |
| O'Brien Farm Prospect | Iron | Occurrence | MRDS | |
| O. H. Gordon Farm Prospect | Lead | Underground | Prospect | MRDS |
| Obrien Farm Deposit | Prospect | MRDS | ||
| Ogdensburg Quarry | Limestone, General | Past Producer | MRDS | |
| Omni Portable Crusher #1 | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Ontario Talc Co.shaft | Talc-Soapstone | Underground | Past Producer | MRDS |
| Ontario Talc Mine | Talc-Soapstone | Past Producer | MRDS | |
| Ore Bed Deposit No. 1 | Sulfur-Pyrite | Surface | Prospect | MRDS |
| Ore Bed Deposit No.2 | Iron | Surface | Past Producer | MRDS |
| Ore Bed School Mine | Sulfur | Surface | Past Producer | MRDS |
| Ore Bed School Prospect | Sulfur-Pyrite | Occurrence | MRDS | |
| Outafit Deposit | Surface-Underground | Occurrence | MRDS | |
| Outafit Occurrence | Iron | Occurrence | MRDS | |
| Portable Screen #30d461hh1933 | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Potsdam Stone & Concrete | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Parish Deposit | Iron | Occurrence | MRDS | |
| Parish Deposit | Occurrence | MRDS | ||
| Parishville Deposit | Iron | Past Producer | MRDS | |
| Parishville Magnetite-Ilmenite De | Surface | Prospect | MRDS | |
| Parishville Pit | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Parishville Plant | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Parker Deposit | Zinc | Occurrence | MRDS | |
| Pencock Prospect | Lead | Past Producer | MRDS | |
| Pierrepont Mine | Zinc | Underground | Past Producer | MRDS |
| Pierrepont Pit | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Pike Mine | Underground | Past Producer | MRDS | |
| Pleasant Valley School Mine | Sulfur | Underground | Past Producer | MRDS |
| Plum Brook Mine | Sand, Industrial NEC | Surface | Temporarily Idled | MSHA |
| Pope Mills Deposit | Graphite | Past Producer | MRDS | |
| Pope Mills Deposit | Graphite | Underground | Past Producer | MRDS |
| Portable Pegson | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Potsdam Red Sandstone Quarry | Stone, Crushed/Broken | Past Producer | MRDS | |
| Potsdam Sandstone Co. Quarry | Stone, Crushed/Broken | Past Producer | MRDS | |
| Priest Sand Mine | Sand, Common | Surface | Temporarily Idled | MSHA |
| Pyrites Mine | Sulfur | Surface-Underground | Past Producer | MRDS |
| Pyrites Prospect | Sulfur-Pyrite | Past Producer | MRDS | |
| Richville Pit | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Rock Pond Anomaly | Underground | Occurrence | MRDS | |
| Rock Pond Occurrence | Iron | Occurrence | MRDS | |
| Ross Prospect | Iron | Prospect | MRDS | |
| Rossie -Bigelelow- Macomb Depos | Underground | Past Producer | MRDS | |
| Rossie Deposit | Graphite | Past Producer | MRDS | |
| Rossie Prospect | Graphite | Occurrence | MRDS | |
| Russell | Molybdenum, Copper | Occurrence | MRDS | |
| Rylestone Quarry | Marble, Dimension | Past Producer | MRDS | |
| Rylestone Quarry | Marble, Dimension | Surface | Past Producer | MRDS |
| Sandvik Jaw Crusher 1886sw12124 | Crushed, Broken Limestone NEC | Surface | Intermittent | MSHA |
| Stouts Pit | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Silver Pond Anomaly | Underground | Occurrence | MRDS | |
| Silver Pond Occurrence | Iron | Occurrence | MRDS | |
| Skate Creek Deposit | Underground | Occurrence | MRDS | |
| Skate Creek Occurrence | Iron | Occurrence | MRDS | |
| South Edward Occurrence | Iron | Occurrence | MRDS | |
| South Edwards Ilmenite-Magnetite | Surface | Prospect | MRDS | |
| Spragueville Plant and Mill | Sand and Gravel, Construction | Past Producer | MRDS | |
| Spruce Mountain Northwest Occurrence | Iron | Occurrence | MRDS | |
| Spruce Mountain Southeast Occurrence | Iron | Occurrence | MRDS | |
| Spuce Mountain Deposits | Underground | Occurrence | MRDS | |
| St. Lawrence Cnty & Rich F Woodside Grave | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| St. Lawrence Marble Co Quarries | Marble, Dimension | Past Producer | MRDS | |
| St. Lawrence Marble Co Quarry | Marble, Dimension | Past Producer | MRDS | |
| St. Lawrence Reduction Plant | Aluminum, Contained or Metal | Processing Plant | Plant | MRDS |
| St. Lawrence State Hospital Quarry | Dolomite | Past Producer | MRDS | |
| St. Regis Red Veined Granite Quarry | Granite | Past Producer | MRDS | |
| Stella Mine | Sulfur | Underground | Past Producer | MRDS |
| Stella Mines | Sulfur-Pyrite | Past Producer | MRDS | |
| Stella Mines | Iron | Past Producer | MRDS | |
| Sterling Pond Anomaly | Occurrence | MRDS | ||
| Sterling Pond Occurrence | Iron | Occurrence | MRDS | |
| Steven's Quarry | Dolomite | Past Producer | MRDS | |
| Stevenson Farm Deposit | Lead | Surface | Past Producer | MRDS |
| Stevenson Prospects | Lead | Past Producer | MRDS | |
| Stiles Mine | Sulfur | Underground | Prospect | MRDS |
| Stouts Sand and Gravel Pit | Sand and Gravel, Construction | Past Producer | MRDS | |
| Stouts Sand and Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Styles Prospect | Sulfur-Pyrite | Occurrence | MRDS | |
| Sucker Brook Magnetite Occurrence | Surface | Prospect | MRDS | |
| Sucker Brook Occurrence | Iron | Occurrence | MRDS | |
| Sweet Pond Occurrence | Iron | Occurrence | MRDS | |
| Telsmith 2250 | Sand, Common | Surface | Abandoned | MSHA |
| The Empire Quarry | Marble, Dimension | Past Producer | MRDS | |
| The Northern Quarry | Marble, Dimension | Past Producer | MRDS | |
| Town of Colton-Gravel Pit | Construction Sand and Gravel | Surface | Temporarily Idled | MSHA |
| Town of Madrid Gravel Pit | Sand and Gravel, Construction | Past Producer | MRDS | |
| Town of Potsdam | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Trembley Mountain Deposit | Underground | Occurrence | MRDS | |
| Trembley Mountain Occurrence | Iron | Occurrence | MRDS | |
| Tuppers Quarry | Granite | Past Producer | MRDS | |
| Twin Lake Stream Anomalies | Surface | Prospect | MRDS | |
| Twinlakes Streams Occurrence | Iron | Occurrence | MRDS | |
| U.s.talc Co.shaft | Talc-Soapstone | Underground | Past Producer | MRDS |
| Uniform Fibrous Talc Co. Mines | Talc-Soapstone | Past Producer | MRDS | |
| Uniform Fibrous Talc Co.shaft | Talc-Soapstone | Underground | Past Producer | MRDS |
| Unnamed Dolomite Quarry | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Unnamed Dolomite Quarry | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Unnamed Dolomite Quarry | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Unnamed Dolomite Quarry | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Gravel Pits | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Iron Deposit | Iron | Occurrence | MRDS | |
| Unnamed Magnetite Prospect Pit | Iron | Prospect | MRDS | |
| Unnamed Magnetite Prospect Pit | Iron | Prospect | MRDS | |
| Unnamed Magnetite Prospect Pit | Iron | Prospect | MRDS | |
| Unnamed Occurence | Lead | Occurrence | MRDS | |
| Unnamed Occurrence | Lead | Past Producer | MRDS | |
| Unnamed Prospect | Lead | Past Producer | MRDS | |
| Unnamed Quarries | Stone, Crushed/Broken | Past Producer | MRDS | |
| Unnamed Quarry | Granite | Past Producer | MRDS | |
| Unnamed Quarry | Stone, Crushed/Broken | Past Producer | MRDS | |
| Unnamed Quarry | Stone, Crushed/Broken | Past Producer | MRDS | |
| Unnamed Quarry | Stone, Crushed/Broken | Past Producer | MRDS | |
| Unnamed Quarry | Dolomite | Past Producer | MRDS | |
| Unnamed Quartz Syenite Quarry | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Unnamed Sand & Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Sand & Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Sand & Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Sand & Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Sand & Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Sand & Gravel Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Unnamed Sandstone Quarry | Flagstone | Surface | Past Producer | MRDS |
| Unnamed Sandstone Quarry | Flagstone | Surface | Past Producer | MRDS |
| Unnamed Sandstone Quarry | Flagstone | Surface | Past Producer | MRDS |
| Unnamed Sandstone Quarry | Flagstone | Surface | Past Producer | MRDS |
| Vanornum Deposit | Occurrence | MRDS | ||
| Victoria East Mine | Lead | Past Producer | MRDS | |
| Victoria Mine | Lead | Surface | Past Producer | MRDS |
| Victoria West Mine | Lead | Past Producer | MRDS | |
| Walker Farm | Iron | Occurrence | MRDS | |
| Walker Farm Deposit | Surface | Prospect | MRDS | |
| Wallace Mine | Talc-Soapstone | Underground | Past Producer | MRDS |
| Washburn Farm Deposit | Lead | Surface-Underground | Past Producer | MRDS |
| Webb Zinc Deposit | Lead, Sulfur-Pyrite, Zinc | Occurrence | MRDS | |
| West Bigelow Deposit | Lead | Past Producer | MRDS | |
| West Bigelow School Deposit | Lead | Surface | Prospect | MRDS |
| West Pierrepont Tourmaline Deposit | Gemstone | Occurrence | MRDS | |
| White Crystal Dolomite Deposits | Marble, Dimension | Past Producer | MRDS | |
| White Farm Occurrence | Iron | Occurrence | MRDS | |
| White Hill Quarry | Granite | Surface | Past Producer | MRDS |
| White Place Anomaly | Occurrence | MRDS | ||
| Whitney Marble Quarry | Marble, Dimension | Past Producer | MRDS | |
| Wier Prospect | Iron | Prospect | MRDS | |
| Wight Mine | Talc-Soapstone | Occurrence | MRDS | |
| Wilson Mountain Anomaly | Occurrence | MRDS | ||
| Wilson Mountain Occurrence | Iron | Occurrence | MRDS | |
| Wolf Hole Anomaly | Occurrence | MRDS | ||
| Wolfe Hole Occurrence | Iron | Occurrence | MRDS | |
| Woodcock Occurrence | Zinc | Occurrence | MRDS | |
| Wright Farm Deposit | Lead | Surface | Past Producer | MRDS |