Two Hanford workers were sent to a hospital Thursday morning as a precaution after developing respiratory symptoms that might be linked to chemical vapors from underground waste tanks.
The Tri-City Herald reports two other workers who smelled vapors at the same time were checked out by the Hanford occupational health provider.
The two workers sent to Kadlec Regional Medical Center in Richland with nose and throat irritation were doing routine radiological surveillance at the group of tanks called the BY Tank Farm. A spokesman for the Energy Department contractor, John Britton of Washington River Protection Solutions, says they were the only workers in that tank farm.
The two other workers who smelled vapors were at the C Tank Farm, where work is underway to empty waste from single-shell tanks.