Just to add to the general experiences of first contact with OSA.
When you're 17, first job, away from home etc., you sign whatever you're damn well told to sign without giving it much further thought. This was in 1963 at UKAEA Harwell when going through our induction training as Scientific Assistants - the Lowest Form of Scientific Life on site. Mind you, the AEA Police at the gates did have guns, which sort of impressed us at that age.
A few months later, by the time we had spent our last week in classrooms and labs under the benevolent gaze of the GLEEP reactor, the Cockroft-Walton generator and the Megajoule capacitor Bank in Hangar 8 , this sense of awe had diminished to the point that the amount of "stores" vanishing through main gate at outmuster on the last Friday embarrassed even us when the total haul was examined back in our hostel. No wheelbarrow liberation was attempted: probably what saved us.
The goodies kept some of us busy enhancing our newly learned electronic and mechanical skills in our spare time for years, probably not what the course instructors had intended, but on balance was rather cost-effective post-course training. Even today my domestic copper pipe-work is done to experimental lab vacuum standards!
The only official advice that we were given by some of the older atomic workers was that if we ever saw smoke coming out of the BEPO reactor chimney in the middle of the site it was probably already too late to run.....
Damn, my Horlick has gone cold.
Ripline