A six metre Canadian pipe bomb has been safely exploded after being discovered at the former HMS Daedalus site at Lee-on-Solent in Gosport.
Local residents were evacuated and roads were closed yesterday as a Royal Navy bomb disposal team was sent to the scene.
They worked throughout the night, moving the explosive to a nearby military range where it was safely destroyed.
Lt Cdr Campbell says they are known to be "potentially hazardous".
The mines were used as 'area denial weapons' in airfields.
The bomb could be exploded to prevent enemies from capturing the land.
The team used metal detection and Ground Penetrating Radar (GPR) to safely remove the bomb from the ground before it was destroyed.