The testing process, called “hot commissioning,” will introduce radioactive waste to the plant for the first time and verify ...

MASON CITY — A concept for expansion of the sports complex at Frederick Hanford Park was approved Tuesday by the Mason City Park Board. The Frederick Hanford Sports Complex would include two ...

Workers at the Hanford nuclear site were ordered to take cover on Friday after a large holding tank with ammonia vapor was discovered to be leaking near the vitrification plant in the 200 East Area.