| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Weber's Quarry, Ellicott City, Howard County, Maryland, USA | 39° 16' 0" N | 76° 47' 59" W | 0.2km (0.1 miles) | |
| Fisher and Carozza Quarries, Howard County, Maryland, USA | 39° 15' 23" N | 76° 46' 58" W | 1.8km (1.1 miles) | |
| Wharton Quarry, Howard County, Maryland, USA | 39° 15' 8" N | 76° 46' 37" W | 2.5km (1.5 miles) | |
| Mount Saint Clement College Quarry, Ilchester, Howard County, Maryland, USA | 39° 15' 15" N | 76° 46' 19" W | 2.7km (1.7 miles) | |
| Baltimore Feldspar Company Quarry (2), Howard County, Maryland, USA | 39° 14' 48" N | 76° 46' 0" W | 3.6km (2.2 miles) | |
| Streker Quarry, Howard County, Maryland, USA | 39° 18' 2" N | 76° 48' 24" W | 3.8km (2.3 miles) | |
| Waranch Prospect (Patapsco State Park Prospect), Baltimore County, Maryland, USA | 39° 14' 49" N | 76° 45' 39" W | 3.9km (2.4 miles) | |
| Highe Quarry No. 2, Howard County, Maryland, USA | 39° 18' 11" N | 76° 47' 57" W | 4.0km (2.5 miles) | |
| Pindell Quarries No. 1, Howard County, Maryland, USA | 39° 14' 39" N | 76° 45' 41" W | 4.1km (2.5 miles) | |
| Highe Quarry No. 1, Howard County, Maryland, USA | 39° 18' 19" N | 76° 47' 56" W | 4.2km (2.6 miles) | |
| Fagan Quarries, Howard County, Maryland, USA | 39° 18' 21" N | 76° 48' 11" W | 4.3km (2.7 miles) | |
| Pindell Quarries No. 2, Howard County, Maryland, USA | 39° 14' 35" N | 76° 45' 29" W | 4.4km (2.7 miles) | |
| Theis Quarry No. 3, Howard County, Maryland, USA | 39° 18' 32" N | 76° 48' 2" W | 4.6km (2.9 miles) | |
| Southern pit ，Hollofield quarries, Hollofield, Baltimore County, Maryland, USA | 39° 18' 34" N | 76° 47' 32" W | 4.7km (2.9 miles) | |
| Hollofield Feldspar Quarries, Hollofield, Baltimore County, Maryland, USA | 39° 18' 37" N | 76° 47' 32" W | 4.8km (3.0 miles) | |
| Cordy Quarry, Howard County, Maryland, USA | 39° 14' 14" N | 76° 45' 26" W | 4.8km (3.0 miles) | |
| Theis Quarry No. 2, Howard County, Maryland, USA | 39° 18' 42" N | 76° 47' 49" W | 4.9km (3.1 miles) | |
| Northern pit ，Hollofield quarries, Hollofield, Baltimore County, Maryland, USA | 39° 18' 43" N | 76° 47' 31" W | 5.0km (3.1 miles) | |
| O'Connor Farm Quarries, Howard County, Maryland, USA | 39° 14' 21" N | 76° 45' 6" W | 5.1km (3.2 miles) | |
| Theis Quarry No. 1, Howard County, Maryland, USA | 39° 18' 47" N | 76° 47' 54" W | 5.1km (3.2 miles) | |
| Gary Quarry, Howard County, Maryland, USA | 39° 18' 42" N | 76° 48' 51" W | 5.1km (3.2 miles) | |
| Perry Quarries, Howard County, Maryland, USA | 39° 18' 53" N | 76° 48' 15" W | 5.3km (3.3 miles) | |
| Patapsco Glen Construction Site, Woodlawn, Baltimore County, Maryland, USA | 39° 18' 50" N | 76° 46' 47" W | 5.4km (3.4 miles) | |
| Humphrey Quarry, Baltimore County, Maryland, USA | 39° 19' 0" N | 76° 47' 38" W | 5.5km (3.4 miles) | |
| Wilt Quarry, Baltimore County, Maryland, USA | 39° 19' 0" N | 76° 47' 38" W | 5.5km (3.4 miles) | |
| Pine Orchard, Howard County, Maryland, USA | 39° 16' 39" N | 76° 51' 39" W | 5.5km (3.4 miles) | |
| Dorseys Run Quarry No. 1, Howard County, Maryland, USA | 39° 18' 45" N | 76° 49' 45" W | 5.7km (3.5 miles) | |
| Bok Asbestos Mine, Hollofield, Baltimore County, Maryland, USA | 39° 19' 5" N | 76° 47' 17" W | 5.7km (3.5 miles) | |
| Alberton Quarry, Baltimore County, Maryland, USA | 39° 19' 0" N | 76° 49' 0" W | 5.7km (3.6 miles) | |
| Picnic Wood Quarries, Baltimore County, Maryland, USA | 39° 19' 9" N | 76° 48' 11" W | 5.8km (3.6 miles) | |
Patapsco Glen Construction Site, Woodlawn, Baltimore County, Maryland, USA