In 1966 over the territory of Spain, an American B-52G failed to manage mid-air refueling, crashed, and in the process lost four B28RI thermonuclear bombs in the air, each with a yield of 1.5 megatons (i.e., 70-100 times greater than those dropped on Hiroshima and Nagasaki). The bombs fell without exploding (of course) onto Andalusian territory, contaminating it slightly with plutonium. Decontamination of the area was carried out, including soil replacement, etc. There were compensations for those who lost crops, and
“…Another $14,500 was paid to a fisherman who witnessed the bomb falling into the sea.”

