Reply #19: If you want to try to figure out in more detail what's being discussed, search the Spanish press:

[struggle4progress]

http://www.google.com/search?q=site:www.elpais.com/+palomares

My own guess is that several trenches with some plutonium contamination were discovered a few years back, so the US agreed to two years of additional assistance, which has since expired; at the time the trenches were discovered, there was uncertainty about the threat they posed, now largely resolved (at least to the satisfaction of officialdom) by subsequent investigation

The text you cite is not terribly clear and may not entirely accurately reflect the intent of the person cited secondhand, given potential issues such as translation, the Secretary's lack of technical knowledge, and the fact that a number of other issues were discussed in short time. In any case, it does not seemn to support the claim made in the OP