my friend found this jap mortar shell (right picture, left photo is put there for comparison)
at 4ft deep near an old "arosep" tree. they cut it in the middle with a steelsaw and all it contain is some kind of a mixture of dried wax and soil/gunpowder?
they tried to dilute a small sample with water and it dissolved.
they tried to burn a small sample and it burned.
what keeps them wondering is how come there is no other mechanism or other object inside other than the one mentioned above?
if the content of that mortar is not what's supposed to be then what it is? for what purpose?
you may have ideas that you might want to share. tia.
i will post additional pictures later.