How to build an atom-bomb

If you have a few minutes in which to do some reading, here's the leadin to a rather fascinating story.

Dave Dobson's past is not a secret. Not technically, anyway - not since the relevant US government intelligence documents were declassified and placed in the vaults of the National Security Archive, in Washington DC. But Dobson, now 65, is a modest man, and once he had discovered his vocation - teaching physics at Beloit College, in Wisconsin - he felt no need to drop dark hints about his earlier life. You could have taken any number of classes at Beloit with Professor Dobson, until his recent retirement, without having any reason to know that in his mid-20s, working entirely as an amateur and equipped with little more than a notebook and a library card, he designed a nuclear bomb.

Today his experiences in 1964 - the year he was enlisted into a covert Pentagon operation known as the Nth Country Project - suddenly seem as terrifyingly relevant as ever. The question the project was designed to answer was a simple one: could a couple of non-experts, with brains but no access to classified research, crack the "nuclear secret"?

(In The Guardian)