PIRA Classification: 4C20.20
Description: A hollow, cast iron, 'grenade' is filled with degassed water. The bomb is placed in a beaker, which is inside a protective Plexiglas box. With the beaker is filled with liquid nitrogen, the box is sealed and the bomb explodes in a few minutes.
Special Instructions: Pour some liquid nitrogen in the beaker before the bomb is placed in it, such that it is pre-cooled.
Condition: Ok
Setup time: Requires 24 hours notice
Safety Issues: Fill up the beaker and close the box quickly.