I have no recollection of seeing a mercury vapor detector at facilities where mercury was in use.

There was a lot of observatory fabricated electronic circuitry used in astronomy that had never been tested to Federal Communications Commission (FCC) standards for electromagnetic interference (EMI).

I came to the conclusion with my doctors that they will not diagnose occupational diseases.

The spectrum of life reduces as altitude increases until 13,797 feet where there is hardly any biological life at all.