Love Alex's archival research work. Never seen a couple of those pictures or heard that particular account of the airglow from Schreiber before. I'm glad to see it finally falling out of favor to paint Slotin as some kind of 'Canadian hero' as it was fashionable to do 15-20 years ago. He was a fool who regularly courted fate, doing things like diving to the bottom of a cooling pool of an operating reactor to repair an instrument he didn't want to wait another day to do, giving himself a nice 100R dose.