In april 17 of 1966, two USA army planes crashed. One of them was trying to get fuel of another. 

This planes had four atomics bombs inside and TNT. The rest of the accident even the boms fall into the village called palomared, located in the sothesat coast of spain.

Fortunately the bombs did't exploted. But they were a risk for health and ambient due to radictiviy on bombs's materials.

Spread troguht land and sea the four bombs were collect by the USA army, as well the rest of the plane and the bodyes of the dead soldiers. 

Nowadays, Spain government claim USA government to take responsability for the damage on the area, and clean the zone from radiactivity.