So I was making a creation with pistons on my test world, and decided that a 5 x 5 x 5 cube of nukes would be needed... with was about 100 nukes (placed around blocks and such...) (my math isnt that bad) The crater was exponetionally bigger than previous tests...
One Nuke On The Surface:
One Nuke Burried A bit:
Blast Radius Is Around 10 - 11
100~ Nukes