The sign doesn’t acknowledge areas where contamination may be at the surface, doesn’t use the universal symbol for radioactive material and may confuse visitors by referring to the material as ...

The signs released by the U.S. Army Corps of Engineers warn of "low-level radioactive materials present" near Coldwater Creek in St. Louis.

Business Journal 'Do not dig': Radioactive waste warning signs to go up near Coldwater Creek "We will post the amount of signs necessary to keep people from entering the area," Col. Andy Pannier said.

FLORISSANT, Mo. – Florissant residents could soon see new signs along Coldwater Creek letting people know about radioactive contamination.

The U.S. Army Corps of Engineers is taking new measures to alert the public of radioactive waste near Coldwater Creek. Signs will be put up at 200 locations.