> But nevermind that. Look at the `lab'. Coke bottles, ash trays, shop brush,
> and cloth glove for protection? Where is the half eaten ham sandwich? What
> are those two small spheres in front, plutonium cores? Guess where the
> neutrons and gamma rays are going when they are not reflected.
That was, of course, the late 1940's, the Bakelite Age of radiological safety, and that photo is supposedly a recreation of the circumstances of Slotin's death.
http://en.wikipedia.org/wiki/Louis_Slotin
-- Andy