Hilton QuarryOccurrence • Molybdenum
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Jones Falls Gneiss QuarriesOccurrence • Molybdenum
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GlyndonOccurrence • Platinum, Chromium, Iron
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Bare Hills Copper MinePast Producer • Copper
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Nine Number 62Past Producer • Clay
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Weaver Stone Company QuarryPast Producer • Quartz
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Texas Quarry Number 2Past Producer • Marble, Dimension
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Greenspring QuarryPast Producer • Marble, Dimension
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Jasper PitPast Producer • Sand and Gravel, Construction
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Joppa Road PitsPast Producer • Sand and Gravel, Construction
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Rosedale PitPast Producer • Clay
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Dyer QuarryProducer • Stone, Crushed/Broken
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Campbell QuarryPast Producer • Limestone, General
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South Mine and MillPast Producer • Limestone, General
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Marriottsville Quarry and MillPast Producer • Limestone, General
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Belle Grove PitPast Producer • Sand and Gravel, Construction
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George W. Schwartz Pit and MillPast Producer • Sand and Gravel, Construction
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Harry T. Campbell & Sons PitPast Producer • Sand and Gravel, Construction
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Chase Masonry Sand PlantPast Producer • Sand and Gravel, Construction
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William Spiegel & Son Quarry & PlntPast Producer • Stone, Crushed/Broken
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Discovery Workings/Main Workings At Bare Hills DistrictPast Producer • Chromium
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Mccomasore Bank/Norris Ore BankPast Producer • Iron
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Herman Ore Bank & 11 Additional MinesPast Producer • Iron
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Chew LimonitePast Producer • Iron
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Reddington/Vonkapff/Rice/Minebank Limonite BanksPast Producer • Iron
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Cross Ore BankPast Producer • Iron
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The Caves Ore BanksPast Producer • Iron
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Oegon Ore BanksPast Producer • Iron
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Mase Ore BanksPast Producer • Iron
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Bosley & Ensor Ore BanksPast Producer • Iron
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Wilson BankPast Producer • Iron
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Geist Ore BankPast Producer • Iron
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Bare Hills Cu MinePast Producer • Copper
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Weir Mine Et Al.Past Producer • Chromium
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CalhounPast Producer • Chromium
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Bluemount Quarry and PlantProducer • Stone, Crushed/Broken
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Pitcher and Creager Brick Co.BanksPast Producer • Iron
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Harris MinePast Producer •
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Hamilton QuarriesPast Producer • Feldspar
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Brown Ore BanksPast Producer • Iron
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Brian Ore BanksPast Producer • Iron
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Guilford and Waltersville QuarryPast Producer • Feldspar
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Mccomas Ore BanksPast Producer • Iron
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George W. Schwartz PitProducer • Sand and Gravel, Construction
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August Sandusky QuarryPast Producer • Feldspar
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Lohman Ore BanksPast Producer • Iron
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Myers Ore BankPast Producer • Iron
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Patapsco QuarryProducer • Stone, Dimension
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Bok MinePast Producer • Asbestos
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Gerst Ore BankPast Producer • Iron
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Stapleton Ore BanksPast Producer • Iron
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Von Kapff Ore BankPast Producer • Iron
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South Mine & MillProducer • Stone, Crushed/Broken
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Whitaker Ore BanksPast Producer • Iron
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Herman Ore BankPast Producer • Iron
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Ridgely Ore BankPast Producer • Iron
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Calhoun MinePast Producer •
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Joppa Road PitsPast Producer • Sand and Gravel, Construction
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Reich Ore BankPast Producer • Iron
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French QuarryPast Producer • Feldspar
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Zinkand Ore BankPast Producer • Iron
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Kern Ore BankPast Producer • Iron
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Delight QuarryProducer • Stone, Crushed/Broken
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Feeney and Atherton Co. QuarriesPast Producer • Feldspar
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Rice Ore BankPast Producer • Iron
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Bishop Ore BankPast Producer • Iron
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Wilt QuarryPast Producer • Feldspar
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Hollofield QuarriesPast Producer • Feldspar
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MinebankPast Producer • Iron
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Schmidtman Ore BankPast Producer • Iron
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Townsend Ore BankPast Producer • Iron
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Matthews Ore BankPast Producer • Iron
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Bethke Ore BankPast Producer • Iron
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Lutz Chromite PlacerProspect • Chromium
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Greenspring QuarryProducer • Stone, Crushed/Broken
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Hofmeister Ore BankPast Producer • Iron
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Jenkins Ore BankPast Producer • Iron
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Cook Ore BanksPast Producer • Iron
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Choate MinePast Producer •
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Excelsior Brick and Pottery Co.BankPast Producer • Iron
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Jasper PitPast Producer • Sand and Gravel, Construction
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Bethlehem Steel/Sparrows Point, Md.Plant • Iron
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Poplar/White MarshProducer • Clay
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Virginia Ore BanksPast Producer • Iron
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Powhatan Asbestos Plant/Woodlawn MdPlant • Asbestos
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Cross Ore BankPast Producer • Iron
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Harry T. Campbell & Sons PitPast Producer • Sand and Gravel, Construction
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Unnamed MinePast Producer •
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Dietz QuarryPast Producer • Feldspar
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Nine Mile Hill DepositPast Producer • Iron
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Kahler Ore BankPast Producer • Iron
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Weaver Stone Company QuarryProducer • Stone, Dimension
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Jones QuarryProducer • Stone, Dimension
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Pot Springs Ore BanksPast Producer • Iron
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Ring Ore BankPast Producer • Iron
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Picnic Wood QuarriesPast Producer • Feldspar
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Genstar Stone Lime PlantPlant • Calcium
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Smith Ore BankPast Producer • Iron
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U.F.Peach QuarriesPast Producer • Feldspar
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Bare Hills Copper MinePast Producer • Copper
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Triplett PlacerPast Producer • Chromium
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Coursey Ore BankPast Producer • Iron
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James Peach QuarryPast Producer • Feldspar
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Ender Ore BankPast Producer • Iron
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Windsor Farm Ore BankPast Producer • Iron
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Bosley and Ensor Ore BanksPast Producer • Iron
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East Baltimore Ore BanksPast Producer • Iron
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William Speigel & Son QuarryProducer • Stone, Crushed/Broken
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Chase Masonry Sand PitProducer • Sand and Gravel, Construction
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Ellicott Ore BankPast Producer • Iron
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Gorsuch Point MinePast Producer • Iron
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Gilmor QuarryPast Producer • Feldspar
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Guilford and Waltersville QuarryPast Producer • Feldspar
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National Gypsum/ Baltimore, Md.Plant • Gypsum-Anhydrite
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Obrien Ore BanksPast Producer • Iron
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South Granite QuarriesPast Producer • Feldspar
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Geist Ore BankPast Producer • Iron
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Tremper Ore BanksPast Producer • Iron
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Leitschuh Ore BankPast Producer • Iron
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James Peach QuarryPast Producer • Feldspar
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Turner Ore BanksPast Producer • Iron
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Reddington Ore BankPast Producer • Iron
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Dolfield PlacerPast Producer • Chromium
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Westerman Ore BankPast Producer • Iron
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Rittenhouse Ore BankPast Producer • Iron
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Roeder Ore BankPast Producer • Iron
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East Lutherville Ore BankPast Producer • Iron
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Offutt QuarryPast Producer • Feldspar
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Texas QuarryProducer • Stone, Crushed/Broken
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Marriottsville QuarryProducer • Stone, Crushed/Broken
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Alberton QuarryPast Producer • Feldspar
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Toboll Ore BankPast Producer • Iron
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Eastern Stainless Steel/Dundalk MdPlant • Iron
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Humphrey QuarryPast Producer • Feldspar
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Us Gypsum/ Baltimore, Md.Plant • Gypsum-Anhydrite
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Northeast Halethorpe Ore BanksPast Producer • Iron
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Rider Ore BankPast Producer • Iron
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Mohr Ore BankPast Producer • Iron
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French QuarryPast Producer • Feldspar
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Blowhorn Ore BanksPast Producer • Iron
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King Ore BankPast Producer • Iron
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Westport Paving Brick Company BankPast Producer • Iron
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Wagonfere Ore BankPast Producer • Iron
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Mase Ore BanksPast Producer • Iron
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Minckins QuarryPast Producer • Feldspar
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Pitcher Ore BankPast Producer • Iron
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Whetstone Point MinePast Producer • Iron
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Miller Ore BanksPast Producer • Iron
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Riemschneider Ore BankPast Producer • Iron
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Randle Ore BankPast Producer • Iron
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Southeast Landsdowne Ore BanksPast Producer • Iron
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Wilson BankPast Producer • Iron
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Gay Shore ProspectProspect • Iron
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Kaufman Ore BankPast Producer • Iron
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Pierce QuarryPast Producer • Feldspar
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Norris Ore BankPast Producer • Iron
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Rupp QuarriesPast Producer • Feldspar
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Gwynn QuarryPast Producer • Feldspar
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Lepper Ore BankPast Producer • Iron
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Kemp QuarriesPast Producer • Feldspar
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Rohe Ore BankPast Producer • Iron
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Minckins QuarryPast Producer • Feldspar
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Bonaparte QuarryPast Producer • Feldspar
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Rheinhardt Ore BankPast Producer • Iron
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Kraft Ore BanksPast Producer • Iron
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Taylor Ore BankPast Producer • Iron
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Old Triplett PlacerPast Producer • Chromium
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Pearce QuarryPast Producer • Feldspar
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Weir MinePast Producer •
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Hengemihle Ore BankPast Producer • Iron
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Texas Maryland Quarry Number 2Past Producer • Stone, Crushed/Broken
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Patterson QuarriesPast Producer • Feldspar
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Northeast Landsdowne Ore BanksPast Producer • Iron
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Notch Cliff QuarriesPast Producer • Feldspar
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Oregon Ore BanksPast Producer • Iron
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Solomon Ore BankPast Producer • Iron
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Kennedy Ore BankPast Producer • Iron
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Northwest Landsdowne Ore BanksPast Producer • Iron
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The Caves Ore BanksPast Producer • Iron
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Chew Ore BankPast Producer • Iron
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Guilford & Waltersville QuarryPast Producer • Feldspar
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Poole Farm QuarriesPast Producer • Feldspar
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Rossville PitProducer • Clay
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Worthington QuarriesPast Producer • Feldspar
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Cochran ProspectProspect • Iron
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During Ore BankPast Producer • Iron
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Waranch ProspectProspect • Uranium
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Blue Mount QuarriesUnknown • Stone, Crushed/Broken
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Klin* Brickyard Ore BankPast Producer • Iron
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