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