Customs officers, who are supposed to be trained to deal with radioactive material for ground handling and examination purposes, are reportedly unaware about international protocols and its indication ...

LITTLE ROCK -- At issue are glow-in-the-dark signs that contain tritium, a hydrogen isotope with a radioactive strength similar to that of material in many smoke alarms. The Nuclear Regulatory ...

Federal officials plan to post warning signs along a contaminated suburban St. Louis creek where generations of children were exposed to radioactive material. Coldwater Creek, which winds between ...

The signs released by the U.S. Army Corps of Engineers warn of "low-level radioactive materials present" near Coldwater Creek in St. Louis. Federal officials plan to post warning signs along a ...

ST. LOUIS COUNTY, Mo. — A federal agency said it wants to put new signs along Coldwater Creek in Florissant, Missouri, warning residents about possible radioactive waste. The US Army Corps of ...