British Guy
Member
- Joined
- Nov 27, 2018
- Messages
- 6
Some of you may find this interesting. Two things to note, they are testing different materials for the different grades and strengths. The concrete that is being tested with the sledgehammer is one of the materials used in the equivalent of a TL30 and higher. The thermic lance, shows the reason why they are never used to cut into safes! Enjoy.