| Location and consistency limits | Ajalli Sandstones (AS) (60 - 90 cm depth) | Upper Coal Measures (UCM) (60 - 90cm depth) | Lower Coal Measures (LCM) (60 - 90 cm depth) |
| Location | Ankpa | Dekina | Owukpa |
| Liquid limit (%) | 24.61 | 44.00 | 66.50 |
| Plastic limit (%) | 18.72 | 19.51 | 21.65 |
| Plasticity index (%) | 5.89 | 24.49 | 33.85 |