US to clean up Spanish radioactive site 49 years after plane crash
Nearly 50 years after a US air force B-52 bomber carrying nuclear weapons crashed in Palomares in south-east Spain, Washington has finally agreed to clean up the radioactive contamination that resulted from the crash.
The US secretary of state, John Kerry, and the Spanish foreign minister, José Manuel García-Margallo, signed an agreement in Madrid on Monday to clean up the site and store the contaminated earth at a suitable location in the United States.
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The B-52 was carrying four hydrogen bombs more powerful than those dropped on Hiroshima and Nagasaki. Two were recovered intact from the sea but the others leaked radiation into the surrounding countryside when their plutonium-filled detonators went off, strewing 3kg of highly radioactive plutonium 239 around Palomares.
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Concern over the site was reawakened in the 1990s when tests revealed high levels of americium, an isotope of plutonium, and further tests showed that 50,000 cubic metres of earth were still contaminated. The Spanish government appropriated the land in 2003 to prevent it being used.
http://www.theguardian.com/world/2015/oct/19/us-to-clean-up-spanish-radioactive-site-49-years-after-palomares-plane-crash
It's a quid pro quo for an increased US military presence in Spain.