| Injection Point | Aylburn Mine Cave [NY728498] |
|
| Detection Point | Impenetrable rising on east bank of Alders Gill [NY69255145] |
| Tracer | Fluorescein |
| Quantity | 0.25kg |
| Detection Method | Visual |
| Time | 16 hours |
| Distance | |
| Average Velocity | |
| Depth |
| Date | 18/01/1992 |
| Notes | Water conditions average to low. River Tyne turned green and rising found by walking upstream |
| Test credit | Paul Monico card index |
| References |