What will happen if you detonate a hand grenade in a safe box?

Question

What do you think will happen if a someone place a remote controlled regular size hand grenade inside an office safe box that lies horizontally on the ground with large concrete cube (10 tonnes) placed atop the safe door? Will it rip the metal apart when there's no where for the explosion to go?

Answer 1

it can be possible that the cube be ripped off by the grenade

this can be determined based on the properties of the cube and the velocity of the particles during explosion