Trace #456: Letter Box Sink (Other Areas)
Locations
 |
Injection Point | Letter Box Sink [NY161374] |
 |
Detection Point | Pumblands Resurgence NEGATIVE [NY148388] |
Methodoloy
| Tracer | |
| Quantity | |
| Detection Method | |
Results
| Time | |
| Distance | |
| Average Velocity | |
| Depth |
Test Details
| Date | 06/02/1964 |
| Notes | |
| Test credit | |
| References | Cavern Investigation in North West Cumbria. Workington College of FE OP club. Reproduced in CPC Recprd 115 pp 11-14 |