RICHLAND, Wash. (AP) — Officials say two more workers at the Hanford Nuclear Reservation have received medical evaluations after they reported smelling vapors at the former nuclear weapons production site.

The Tri-Cities Herald reports that Washington River Protection Solutions said Wednesday two workers had reported an odor outside the AY Tank Farm. Neither had any symptoms and they both went to get checked out an on-site clinic.

Last week, a worker who smelled nothing reported symptoms and also underwent a medical evaluation. The symptoms were not made public.

Since late April, a total of 49 Hanford workers have received medical evaluations because of possible exposure to chemical vapors. Some had symptoms, some smelled an odor and some requested evaluations because they were in the area.

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