Back again.

I noticed the reference to "Danger UXB". The butterfly bomb was definately not handled as shown in the series. The bombs were packed tightly into a cylindrical container which opened on leaving the aircraft. the slipstream scattered the bombs which then sprung open, the end plates forming a slight angle and turned in the airflow unscrewing the fuse rod. Ten turns energised the fuse, further movement altered the sensitivity. If the rod detached altogether, it became a contact bomb. So we got it both ways. If the safety dome for exploding them safely wasn't available, sandbags were gently (very!) stacked round the bomb with a large plug of gun - Cotton as close to the casing as possible, two sand bags on top and exit! After lighting the fuse of course!

Ken