| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Indian Mines, Jackson County, Iowa, USA | 42° 3' 59" N | 90° 21' 46" W | 14.5km (9.0 miles) | |
| Grand Mound, Clinton County, Iowa, USA | 41° 49' 29" N | 90° 38' 51" W | 21.3km (13.3 miles) | |
| Clinton Diggings, Clinton County, Iowa, USA | 41° 51' 14" N | 90° 12' 9" W | 24.7km (15.4 miles) | |
| Folletts, Clinton County, Iowa, USA | 41° 44' 55" N | 90° 21' 17" W | 25.2km (15.7 miles) | |
| Shaffton quarry, Folletts, Clinton County, Iowa, USA | 41° 45' 4" N | 90° 20' 22" W | 25.4km (15.8 miles) | |
| Unnamed Limestone Quarry (MRDS - 10144556), Whiteside County, Illinois, USA | 41° 51' 20" N | 90° 9' 55" W | 27.4km (17.0 miles) | |
| Savanna, Carroll County, Illinois, USA | 42° 5' 40" N | 90° 9' 24" W | 29.5km (18.3 miles) | |
| Schultz Quarry, Carroll County, Illinois, USA | 42° 5' 36" N | 90° 9' 18" W | 29.6km (18.4 miles) | |
| Thomson-Groharing Quarry (Graharing Quarry; Rein; Schultz; Dahl), Carroll County, Illinois, USA | 41° 57' 36" N | 90° 6' 11" W | 29.9km (18.6 miles) | |
| Limestone Prospect (MRDS - 10241460), Carroll County, Illinois, USA | 42° 6' 15" N | 90° 9' 29" W | 30.0km (18.6 miles) | |
| Savanna Township Highway Department pit, Savanna, Carroll County, Illinois, USA | 42° 5' 17" N | 90° 8' 24" W | 30.4km (18.9 miles) | |
| Unnamed Limestone Quarry (MRDS - 10134473), Whiteside County, Illinois, USA | 41° 54' 50" N | 90° 5' 59" W | 30.6km (19.0 miles) | |
| Huiz Engineering Quarry, Whiteside County, Illinois, USA | 41° 47' 53" N | 90° 9' 50" W | 30.8km (19.1 miles) | |
| McMahon Quarry and Plant No. 8, Whiteside County, Illinois, USA | 41° 44' 17" N | 90° 13' 41" W | 31.5km (19.6 miles) | |
| Shelly Quarry, Jo Daviess County, Illinois, USA | 42° 12' 48" N | 90° 17' 17" W | 31.7km (19.7 miles) | |
| Limestone Prospect (MRDS - 10144979), Carroll County, Illinois, USA | 42° 6' 0" N | 90° 7' 24" W | 32.2km (20.0 miles) | |
| S. Aker Quarry, Whiteside County, Illinois, USA | 41° 53' 4" N | 90° 5' 20" W | 32.2km (20.0 miles) | |
| Limestone Prospect (MRDS - 10120391), Whiteside County, Illinois, USA | 41° 53' 0" N | 90° 5' 18" W | 32.3km (20.1 miles) | |
| Acker-Fulton Quarry, Whiteside County, Illinois, USA | 41° 53' 2" N | 90° 5' 8" W | 32.5km (20.2 miles) | |
| Limestone Prospect (MRDS - 10193386), Whiteside County, Illinois, USA | 41° 51' 34" N | 90° 5' 9" W | 33.3km (20.7 miles) | |
| Unnamed Limestone Quarry (MRDS - 10217730), Carroll County, Illinois, USA | 42° 4' 24" N | 90° 5' 30" W | 33.3km (20.7 miles) | |
| Unnamed Limestone Quarry (MRDS - 10193886), Whiteside County, Illinois, USA | 41° 50' 35" N | 90° 5' 39" W | 33.3km (20.7 miles) | |
| Bellevue Sand and Gravel Company, Jackson County, Iowa, USA | 42° 15' 30" N | 90° 25' 21" W | 33.4km (20.7 miles) | |
| Princeton, Scott County, Iowa, USA | 41° 40' 29" N | 90° 20' 27" W | 33.4km (20.7 miles) | |
| Main Baldwin Diggings, Jackson County, Iowa, USA | 42° 4' 44" N | 90° 50' 27" W | 33.7km (21.0 miles) | |
| Lloyde Haas Quarry, Carroll County, Illinois, USA | 42° 6' 50" N | 90° 6' 10" W | 34.5km (21.4 miles) | |
| Savanna Quarry, Savanna, Carroll County, Illinois, USA | 42° 2' 40" N | 90° 3' 39" W | 34.7km (21.5 miles) | |
| Cordova Quarry Collision Stone Company, Rock Island County, Illinois, USA | 41° 39' 42" N | 90° 19' 59" W | 35.0km (21.7 miles) | |
| Hoffman Quarry, Carroll County, Illinois, USA | 42° 8' 34" N | 90° 7' 9" W | 35.0km (21.8 miles) | |
| Cordova Quarry Butler Company, Rock Island County, Illinois, USA | 41° 39' 16" N | 90° 20' 3" W | 35.7km (22.2 miles) | |
