Sausman Mine | Sausman Mine | Garrett | 1729 | Accident |
McClenahan Granite Quarry | McClenahan Granite Quarry | Cecil | 33 | Havre De Grace |
Port Deposit Quarry | Port Deposit Quarry | Cecil | 30 | Aberdeen |
Wilson Quarry | Wilson Quarry | Washington | 449 | Mason and Dixon |
Number 1 Mine | Number 1 Mine | Garrett | 2365 | Grantsville |
Gunpowder Quarry | Gunpowder Quarry | Baltimore | 167 | Towson |
Campbell Quarry | Campbell Quarry | Baltimore | 197 | Cockeysville |
Caves Ore Bank | Caves Ore Bank | Baltimore | 502 | Cockeysville |
Cross Ore Bank | Cross Ore Bank | Baltimore | 420 | Cockeysville |
Oregon Ore Bank | Oregon Ore Bank | Baltimore | 407 | Cockeysville |
Allender Road Pit | Allender Road Pit | Baltimore | 79 | White Marsh |
Bradshaw Pit | Bradshaw Pit | Baltimore | 23 | White Marsh |
Days Cove Pit | Days Cove Pit | Baltimore | 13 | White Marsh |
Schwartz Pit | Schwartz Pit | Baltimore | 98 | White Marsh |
Smuck Pit | Smuck Pit | Baltimore | 108 | White Marsh |
Hydes Quarry | Hydes Quarry | Carroll | 469 | New Windsor |
Le Gore Quarry | Le Gore Quarry | Frederick | 187 | Woodsboro |
Seneca Quarry | Seneca Quarry | Montgomery | 325 | Seneca |
Maryland Mine | Maryland Mine | Montgomery | 381 | Falls Church |
Cumberland Quarry | Cumberland Quarry | Allegany | 2054 | Frostburg |
Dargan Quarry | Dargan Quarry | Washington | 299 | Harpers Ferry |
Pinesburg Quarry | Pinesburg Quarry | Washington | 436 | Williamsport |
Soldiers Delight Mine | Soldiers Delight Mine | Baltimore | 666 | Reisterstown |
Boonsboro Quarry | Boonsboro Quarry | Washington | 476 | Funkstown |
Havre De Grace Quarry | Havre De Grace Quarry | Harford | -30 | Havre De Grace |
Piccirilli Quarries | Piccirilli Quarries | Baltimore | 397 | Sykesville |
Bluemount Quarry | Bluemount Quarry | Baltimore | 315 | Hereford |
Churchville Quarry | Churchville Quarry | Harford | 243 | Bel Air |
Elk Mills Quarry | Elk Mills Quarry | Cecil | -148 | Newark West |
Frederick Quarry | Frederick Quarry | Frederick | -49 | Frederick |
Gatch Quarry | Gatch Quarry | Harford | 236 | Bel Air |
Grays Run Quarry | Grays Run Quarry | Harford | 236 | Aberdeen |
Greenspring Quarry | Greenspring Quarry | Baltimore | 384 | Cockeysville |
Hoyes Quarry | Hoyes Quarry | Garrett | 2536 | Sang Run |
Mechanics Valley Quarry | Mechanics Valley Quarry | Cecil | -33 | Bay View |
Medford Quarry | Medford Quarry | Carroll | 574 | New Windsor |
Stoneyhurst Quarry Number 1 | Stoneyhurst Quarry Number 1 | Montgomery | 115 | Falls Church |
Stoneyhurst Quarry Number 3 | Stoneyhurst Quarry Number 3 | Montgomery | 167 | Falls Church |
Toms Run Quarry | Toms Run Quarry | Montgomery | 151 | Falls Church |
Union Bridge Quarry | Union Bridge Quarry | Carroll | 256 | Union Bridge |
Shufelt Sand and Gravel Pit | Shufelt Sand and Gravel Pit | Dorchester | 7 | East New Market |
Butler Stone Quarry | Butler Stone Quarry | Baltimore | 509 | Hereford |
Bedrock Quarry | Bedrock Quarry | Allegany | 1424 | Flintstone |
Deep Creek Quarry | Deep Creek Quarry | Garrett | 2467 | Sang Run |