Central Region Core Research Center Administration
| Township: | 21N | Range: | 4E | Section: | 18 |
| Quarter: | SWNW | County: | HARDING | State: | SD |
| API Number: | 4006320185 | Operator: | KOCH EXPLORATION | Well Name: | 12-18 GRAVES |
| Latitude: | 45.786985 | Longitude: | -103.684589 | Coordinate Source: | FROM STATE RECORDS |
| Minimum Depth: | 1530 | Maximum Depth: | 8620 | Security Flag: |