Alva Review-Courier -

SPOKANE, Wash. (AP) — No airborne radiation was detected after steam escaped Friday from a tunnel containing radioactive waste at a former nuclear weapons production site in Washington state, U.S. officials said, the second problem with aging tunnels at the Hanford Nuclear Reservation in a year.

Workers who had been ordered to stay inside buildings were released about five hours later, the U.S. Department of Energy said. There were no reports of injuries.

The agency said cameras revealed that the steam resulted from the drying of a cement-like grout that was recently pumped into the 54-year-ol...