This is a video taken from the Ursinus SnapChat on Nov. 15th, 2017 of the group touring campus and looking at lost/mysterious places. Visual confirmation of radiation labs.
With the 'Radioactivity Laboratories' label still intact, the entrance to the labs requires a ladder to climb down to the doorway - it's never easy to get to the best secrets!
This image provides a better look at the full lab. The rusted desks and crumbling cement shows both the age and the isolated nature of this location. It's exactly how many people picture the ideal living space of a ghost!