philip moon was doing that. i was giving him the data. i was basically his hands, along with another sed, who incidentally did have an accident right next to me. he blew up one of these explosive caps by accident and he was badly injured by that, but he recovered. so we worked on that. i should have mentioned that i was not allowed to work in the main part of los alamos because i have not been cleared yet. so i was given a second class clearance, a tentative badge called a blue badge. i did not know at the time they were investigating me back in new york. this clearance in new york city, apparently i passed and was given a white badge, which was an entrÉe into the actual technical area of los alamos where all the important work was going on. so at that point, that was two or three months after i started on jumbo, i got the white badge and just at that time they decided to forget about jumbo because at that time their confidence was such that they were pretty sure that the bomb would work and decided that jumbo was a waste of time. now per

benjamin: so philip moon and i were reassigned. however, we remained good friends. love to look moon. philip moon. he was highly entertaining, cultured, very british, had a very british wife. the two of them were just like the arthur rank movies i watched all the time. i love them very much. in touch for a number of years after the war. after work with him -- maybe you could tell us about the mushroom society? benjamin: that was a little later. >> what was next? benjamin: what was next as i got a new assignment. donald horw boss ning. i think he is still alive. he is almost hitting 100. only two years older than me. he is in his 90's now. he was a professor of chemistry at princeton university. war, he became a science advisor to lyndon b. johnson. when i knew him, his assignment at los alamos was to design the ignition switches which operated , which in turn caused an implosion. , theu have switches igniters on top of the cones of the explosive lenses, and then you have the implosion. our job at the beginning was to build switches. the important thing to know is th