| Injection Point | Growling Hole [SD712774] |
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| Detection Point | Keld Head [SD696766] |
| Tracer | Leucophor |
| Quantity | 1 kg |
| Detection Method | Cotton Wool |
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| References | Gascoyne, M. 1973. Growling Hole. Lancaster University Speleological Society 3:32-36 |