In the center of the laboratory stood a square booth with thick walls and a glass window in the front wall. Eddie knew the walls were lead-lined, and the glass was a thick, specially treated type. All experiments which were the least bit hazardous were conducted inside of that six-by-six-foot booth. The radioactive materials were handled remotely by a strange steel-fingered device operated by a man who stood safely outside of the booth. Absolutely no chances were taken in the handling of radioactive materials.