Unexploded ordnance, often called "UXO," has long been a problem after wars. In World War II, the Allies dropped almost 1.6 million tons of bombs on Germany – the equivalent of 6.4 million 500-pound bombs. Every major city was hit.
The problem is that not all the bombs exploded — not surprising when so many were dropped. These have been hanging around – and even now, 72 years after V-E Day, some of them still turn up.
And in Hanover, Germany, on May 7, 2017, three of those UXOs were found by construction crews, according to the BBC.
A 2,500 pound German bomb, buried opposite University College Hospital, London, was removed by Army sappers. Before the bomb, which fell in 1941, was de-fused, people in the area were evacuated to a safe distance. (National Archives)
According to a report by FoxNews.com, the city government evacuated 50,000 people, the largest since an unexploded bomb was found in Augsberg, Germany, last Christmas. In February, a German bomb that failed to detonate was discovered in the United Kingdom while construction work was underway to improve the intended home port for the Queen Elizabeth-class carriers.
With so many people affected, the city decided to throw a big UXO party. Numerous events were set up, including screenings of films for kids, sporting events, and museum tours. There were also efforts made to provide food and other essential supplies to the evacuees while the Allied bombs were secured.
(Photo: U.S. Air Force Airman 1st Class Sean Carnes)
There's no doubt about it, UXO can still kill, even after decades under ground. The BBC reported that in 2010, three German EOD techs were killed while trying to defuse a World War II leftover. In 2012, a construction worker was killed when his equipment hit an old bomb. Old World War II ordnance has sometimes been discovered during training exercises, notably in the Baltic Sea.
In the United States, most of the UXO is from the Civil War. In the wake of Hurricane Matthew, a number of cannonball left over from that conflict were unearthed.