| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Fry Quarry (Vetter Brothers; Inc.), Charles County, Maryland, USA | 38° 37' 45" N | 76° 53' 17" W | 4.4km (2.8 miles) | |
| Fort Washington, Prince Georges County, Maryland, USA | 38° 42' 39" N | 77° 2' 3" W | 12.7km (7.9 miles) | |
| Fort Foote, Prince Georges County, Maryland, USA | 38° 46' 9" N | 77° 0' 50" W | 17.4km (10.8 miles) | |
| Unnamed Clay deposits [1], Alexandria, Virginia, USA | 38° 47' 31" N | 77° 3' 11" W | 21.1km (13.1 miles) | |
| Oxon Creek, Prince Georges County, Maryland, USA | 38° 48' 31" N | 77° 0' 48" W | 21.5km (13.3 miles) | |
| Dower House Road Plant, Prince Georges County, Maryland, USA | 38° 48' 37" N | 76° 50' 44" W | 22.2km (13.8 miles) | |
| Wheeler Road, Oxon Hill, Prince Georges County, Maryland, USA | 38° 49' 49" N | 76° 58' 54" W | 23.2km (14.4 miles) | |
| Old Greensand-Diatomaceous Earth Pit, Calvert County, Maryland, USA | 38° 42' 33" N | 76° 41' 43" W | 23.2km (14.4 miles) | |
| Kaylorite Corporation Greensand Pit, Calvert County, Maryland, USA | 38° 43' 17" N | 76° 41' 35" W | 23.9km (14.9 miles) | |
| Clay Deposit (MRDS - 10067944), Fairfax County, Virginia, USA | 38° 41' 33" N | 77° 13' 9" W | 25.5km (15.8 miles) | |
| Popes Creek, Charles County, Maryland, USA | 38° 23' 54" N | 76° 59' 25" W | 25.5km (15.9 miles) | |
| Lyons Creek Diatomaceous Earth Deposit, Calvert County, Maryland, USA | 38° 44' 57" N | 76° 41' 4" W | 26.1km (16.2 miles) | |
| Quantico Slate Deposits, Fairfax County, Virginia, USA | 38° 41' 29" N | 77° 14' 45" W | 27.7km (17.2 miles) | |
| Occoquan Quarry (Occoquan Quarry Nos. 1 & 2), Fairfax County, Virginia, USA | 38° 40' 55" N | 77° 15' 14" W | 28.1km (17.5 miles) | |
| Graham-Virginia Granite Quarry (Mideast Div. Vulcan Materials Company), Fairfax County, Virginia, USA | 38° 41' 17" N | 77° 15' 36" W | 28.8km (17.9 miles) | |
| No. 2, Lorton, Fairfax County, Virginia, USA | 38° 41' 46" N | 77° 15' 44" W | 29.2km (18.1 miles) | |
| Wilson Molding Sand Pit, Anne Arundel County, Maryland, USA | 38° 43' 42" N | 76° 37' 10" W | 30.0km (18.7 miles) | |
| Agnewville Prospect, Gold-Pyrite Belt, Prince William County, Virginia, USA | 38° 38' 37" N | 77° 17' 21" W | 30.5km (19.0 miles) | |
| Constitution Avenue, District of Columbia (Washington D.C.), USA | 38° 53' 33" N | 77° 1' 57" W | 30.9km (19.2 miles) | |
| Crawford Placers Prospect (Neabsco Creek Prospect), Gold-Pyrite Belt, Prince William County, Virginia, USA | 38° 37' 26" N | 77° 18' 5" W | 31.5km (19.6 miles) | |
| Capitol Clay Products Company (West Brothers Brick Company), Prince Georges County, Maryland, USA | 38° 54' 32" N | 76° 54' 22" W | 31.7km (19.7 miles) | |
| Annandale, Fairfax County, Virginia, USA | 38° 49' 49" N | 77° 11' 46" W | 32.0km (19.9 miles) | |
| Annandale Quarry, Annandale, Fairfax County, Virginia, USA | 38° 50' 10" N | 77° 12' 57" W | 33.6km (20.9 miles) | |
| Waterworks tunnel, District of Columbia (Washington D.C.), USA | 38° 55' 27" N | 77° 1' 4" W | 34.0km (21.1 miles) | |
| Bladensburg, Prince Georges County, Maryland, USA | 38° 55' 49" N | 76° 55' 40" W | 34.0km (21.1 miles) | |
| Falls Church, Fairfax County, Virginia, USA | 38° 52' 56" N | 77° 10' 15" W | 35.0km (21.8 miles) | |
| Gneiss outcrop, Rock Creek Park, NW Washington, District of Columbia (Washington D.C.), USA | 38° 56' 0" N | 77° 2' 58" W | 35.7km (22.2 miles) | |
| Piney branch, Rock Creek park, NW Washington, District of Columbia (Washington D.C.), USA | 38° 56' 13" N | 77° 2' 20" W | 35.8km (22.3 miles) | |
| Rock Creek Park, NW Washington, District of Columbia (Washington D.C.), USA | 38° 56' 8" N | 77° 2' 55" W | 35.9km (22.3 miles) | |
| Cabin Branch Mine (Dumfries Mine), Dumfries, Gold-Pyrite Belt, Prince William County, Virginia, USA | 38° 34' 29" N | 77° 20' 54" W | 36.0km (22.4 miles) | |
