A number of employees at Los Alamos National Laboratory were working in Technical Area 22 Thursday afternoon when some of the workers detected an unusual odor.
Employees at TA-22 routinely work with small quantities of chemicals, said Jeff Berger, the lab's communications director.
About half a dozen of the workers went to the LANL Occupational Medicine facility for examination. Medical personnel reportedly determined there were no injuries and the employees were released late Thursday afternoon.