No, I'm not asking if I *should* handle it, just what my level of concern ought to be in regards to being around this stuff. My physics department hired me to clean up one of the labs they want to start using again. I opened one of the cabinets and saw a pair of small glass stoppered and sealed glass vials with a yellow powder in them, the labels were very faded and the bottles looked extremely old, but I could see that the labels said they contained uranium nitrate. This concerned me, so I asked the professor I'm working for about it and he insisted it was "probably safe", which still left me extremely worried (especially due to the use of the word "probably"). We have some very old equipment in our department and it's entirely feasible that these samples were acquired before current standards for handling radioactive materials were implemented. Also, there were no radiation warnings anywhere. I'll upload a photo of the bottles the next time I go in. Despite his assurance, I'm still very worried. I don't know a great deal about radiation safety aside from "stay away from it" so erring on the side of caution I haven't been back in that room. I have not touched the bottles since I saw the labels and they didn't break or crack or anything. Compounding my concern was the fact that the professor who had been using that room as an office for several years left 2 years ago for unspecified "chronic health issues". I'm beginning to wonder if I should contact some kind of authorities about this. Advice?