Razor blades found in walls during remodeling! (installed, cabinets

Drop blade here medicine cabinet razor blade slot I live in a late 40's apartment building in LA with the original medicine cabinet intact and it has a slot for razors ( first time I have ever medicine cabinet with razor blade slot I found this fascinating a pile of old razor blades If you remember, medicine cabinets used to have a slot in the back to stick your dull

medicine cabinet razor blade slot so where do all those used razor blades go? in the bottom of the wall! and they wait there until some poor future remodeler decides to