It’s difficult to miss the giant RADIOACTIVE label on this specimen of kasolite and curite (named for Marie Curie!). Such samples need to be stored in bags and exposure extremely limited by research staff, who keep Geiger counters handy to frequently check radiation levels in and around these cabinets.
Something that always amuses me when I go to my favourite exhibition in the Natural History Museum; Geology. It’s by far the oldest active exhibition, to the point I’m fairly sure it should have a preseveration order on it. Most of is consists of long tables with every kind of rock in existance displayed on it. I like going there to brush up on my rocks.
But every so often, there is no rock, but a little slip of paper reading something like ‘due to further research we have discovered this rock is dangerously radioactive, and have had it removed’ under headings like radium or uranium.