World War II aircraft gauge with radium dial

These World War II era aircraft gauges were painted with radium paint so they could be seen by pilots flying at night. Radium is about 1 million times more radioactive than Uranium so if all of the cockpit gauges were painted with radium, being shot down was not the only danger. Being at high altitudes exposes you to higher radiation levels & the radium dials are spewing out radioactive particles which will decay to radon gas. I hope their cockpits were well ventilated...