People who worked at the Flintkote Company, in Fremont, California, between 1967 and 1979 were unknowingly exposed to low levels of asbestos, says a report from the Federal Agency for Toxic Substance and Disease Registry.

Public health officials in the area, in the Bay area of California, have asked former employees of the company to inform them about any health problems they have that could be the result of asbestos exposure.

The same officials also want to speak to those who lived with Flintkote workers during those 12 years, because it is not uncommon for employees to carry asbestos fibers home in their hair or clothing.

If you worked at the manufacturing plant during the relevant period, or lived with somebody who did, you should contact Maria Teran-MacIver, the agency's communication specialist, at 770-488-0720.