The randomized resource deposits have the potential to spawn with uranium ore. While veteran players will know to steer clear without proper equipment, new players are likely to grab a handful and wonder why their character is dying. There is no proximity radiation warning as of v0.2.1.2.
Option #1: When populating a map, add radiation at uranium deposits (the radiation can stay even after the deposit is harvested)
Option #2: remove uranium from the list of possible ores in deposits (boring).
edit: to clarify, I am not talking about the large uranium nodes where you can place automatic miners. I'm talking about the small resource deposits scattered across the map. Like this: