The trap rock of Pachami-Hatgacha and adjacent areas of Birbhum district.
| Type of Test |
Value |
| Los Angeles Abration value (%) |
11.00 – 15.00 |
| Aggregate Impact value (Dry %) |
4.00 – 7.00 |
| Aggregate Crushing Strength value (%) |
13.00 – 18.00 |
| Sodium Sulphate Soundness value (%) |
0.11 – 0.27 |
| Specific gravity |
2.94 – 3.01 |
