Trace #456: Letter Box Sink (Other Areas)
Locations
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Injection Point | Letter Box Sink [NY161374] |
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Detection Point | Pumblands Resurgence NEGATIVE [NY148388] |
Methodoloy
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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 |