Efforts to clean up bombs, artillery shells, land mines, grenades, and other unexploded ordnance in Italy started in 1946. The following year, the US government gave Italy all the information it had gleaned about bomb locations from Allied forces’ reports during the war. According to Il Fatto Quotidiano , military engineers in Italy unofficially estimate that they’ve found and defused 60% of the unexploded bombs from World War II so far. The Ministry of Defense says it still finds thousands of undetonated, potentially lethal leftovers from the war every year—2012’s figure was 9,177 pieces of ordnance, including 81 bombs dropped from aircraft.
That is in Italy alone.