5 more Hanford workers evaluated for vapors

Five more clean-up workers at the Hanford nuclear reservation have been evaluated for symptoms related to vapors from waste storage tanks.

Energy Department contractor Washington River Protection Solutions says one was working near two tank farms Thursday and another who smelled odors Wednesday experience symptoms overnight and reported them Thursday.

In addition, three other employees who did not report symptoms were evaluated Thursday as a precaution. All returned to work.

Dozens of Hanford workers have been evaluated this year for possible exposure to chemical vapors from the waste held in Hanford’s underground tanks.