BOMB disposal experts were called to the recycling centre in March when staff found what they believed to be an explosive device among the rubbish.
The centre was shut at around 3.30 pm on Wednesday after workers there discovered a package containing what looked like a bomb.
Police and the 5131 Squadron from RAF Wittering were called to the site where the device was declared to be not live.
The bomb was taken away by the Ministry of Defence.
It is thought it was a practice bomb from World War II, a tool used by aircrew to train on how to drop the weapon correctly.
A County Council spokesman said that workers found a package which was out of the ordinary and called police straight away to deal with it.
The centre was shut half an hour early due to the unusual find.
A Police spokesman said: “Anyone who finds a suspicious device should not touch it, move a safe distance away and call 999.”
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