Mines in Piscataquis County, Maine
85Total
6Active
Piscataquis County, Maine has 85 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 6 of these are currently active mining operations. The most commonly recorded commodity is slate, dimension, with 46 sites. The table below lists all recorded mines in the county with links to individual site details.
All Mines in Piscataquis County
| Mine | Commodity | Type | Status | Source |
|---|---|---|---|---|
| Gerrish Pit | Construction Sand and Gravel | Surface | Active | MSHA |
| Brownville Junction Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Number 5 Mine | Slate, Dimension | Underground | Producer | MRDS |
| Sangerville Pit & Mill | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Spalding Herrick Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Warren Pit | Sand and Gravel, Construction | Surface | Producer | MRDS |
| Andalusite Occurrence | Occurrence | MRDS | ||
| Bennet Mine | Zinc | Underground | Past Producer | MRDS |
| Big Kineo Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Blanchard Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Bonded Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Boston & Maine Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Boulder Train, Katahdin | Molybdenum | Occurrence | MRDS | |
| Brawn Quarry | Granite | Surface | Past Producer | MRDS |
| Brownville Junction Pit and Mill | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Brownville Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Burma Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Cement Pit Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Chiastolite Prospect | Kyanite | Occurrence | MRDS | |
| Cora Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Cove Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Dirigo Quarry | Slate, Dimension | Unknown | MRDS | |
| Dover-Foxcroft Prospect | Manganese | Occurrence | MRDS | |
| Eastern Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Eureka Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Farm Quarries Nos. 3 & 4 | Slate, Dimension | Surface | Past Producer | MRDS |
| Farm Quarry No. 1 | Slate, Dimension | Surface | Past Producer | MRDS |
| Farm Quarry No. 2 | Slate, Dimension | Surface | Past Producer | MRDS |
| Forest Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Foss Farms Prospect | Underground | Unknown | MRDS | |
| Foss Quarry | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Foss Quarry | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| General Slate Co. Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Graphite Occurrence | Graphite | Occurrence | MRDS | |
| Haley Construction Inc | Sand and Gravel, Construction | Past Producer | MRDS | |
| Highland Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Hillside Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Imperial Quarry | Slate, Dimension | Unknown | MRDS | |
| J.l. Bishop | Sand and Gravel, Construction | Past Producer | MRDS | |
| Katahdin Iron Works | Iron, Sulfur-Pyrite | Past Producer | MRDS | |
| Katahdin Pyrrhotite Deposit | Iron, Sulfur | Surface | Past Producer | MRDS |
| Lm Pit | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Leighton Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Lowell Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Merrill Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Milo Pit | Sand and Gravel, Construction | Surface | Past Producer | MRDS |
| Milo Pit | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Monson Pond Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Monson-Hebron Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Monson-Maine Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Moosehead Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Number 2 Mine | Slate, Dimension | Underground | Past Producer | MRDS |
| O'Brien & Sons | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Oakland Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Old Granite Quarry | Granite | Surface | Past Producer | MRDS |
| Pine Tree Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Port. Univ. Crusher Farrin Bros. | Sand and Gravel, Construction | Processing Plant | Plant | MRDS |
| Portable Plant | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Portable Screen | Construction Sand and Gravel | Surface | Intermittent | MSHA |
| Portland Monson Slate Co | Slate, Dimension | Past Producer | MRDS | |
| Portland Monson Slate Co | Slate, Dimension | Past Producer | MRDS | |
| Portland Monson Slate Co. Mill | Slate, Dimension | Processing Plant | Plant | MRDS |
| Priestly Lake | Molybdenum | Occurrence | MRDS | |
| Queen City Quarry | Granite | Surface | Past Producer | MRDS |
| Ross Cove Prospect | Zinc | Occurrence | MRDS | |
| Sangerville Pit and Mill | Construction Sand and Gravel | Surface | Abandoned | MSHA |
| Sangerville Portable | Crushed, Broken Stone NEC | Surface | Abandoned | MSHA |
| Sebec Lake Occurrence | Lead | Occurrence | MRDS | |
| Slate Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Slate Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Stanchfield Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Thomas Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Underground Quarry | Slate, Dimension | Surface-Underground | Past Producer | MRDS |
| Unnamed Mine | Silver | Prospect | MRDS | |
| Unnamed Mine | Gold | Occurrence | MRDS | |
| Unnamed Mine | Silver | Prospect | MRDS | |
| Unnamed Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Unnamed Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Unnamed Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Unnamed Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| West Monson Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Weston Farm Prospect | Copper | Prospect | MRDS | |
| Weston Quarry | Stone, Crushed/Broken | Surface | Past Producer | MRDS |
| Wilkens Quarry | Slate, Dimension | Surface | Past Producer | MRDS |
| Williams Quarry | Slate, Dimension | Surface | Past Producer | MRDS |