| Terrace no. | Rock Mass Strength (N/mm2) | Range | Mean | Standard Deviation | CV* % | |
| Max. | Min. | |||||
| Terrace 3 | 18.03 | 10.71 | 7.32 | 13.78 | 2.03 | 14.82 |
| Terrace 4 | 25.71 | 16.28 | 9.43 | 18.48 | 3.11 | 16.02 |