An outside explosion would break through the wall and create attack debris inside, causing damage and potential injury to those in it.
Pre-blast: Unprotected wall on left side and polyurea protected wall on right
After the blast: Unprotected wall on left side and polyurea protected wall on right
Polyurea is applied to the wall.
The wall before the explosion
Unprotected wall on right side and polyurea protected wall on left
The explosion is equivalent to 110kg of TNT explosive at a distance of 30 feet (9,144m).
The wall is protected by a Polyurea coating that keeps the dummy safe from explosions and debris.
After the explosion: The wall protected by the Polyurea coating remains intact while the unprotected wall is completely destroyed.
The wall was not disposed of after the explosion, collapsed completely, debris causing damage to the dummy.