One of the most common mercury switches in households for generations, has
been the mercury switch located in wall heating system thermostats.. very
well sealed in glass that used to be considerably thicker than CFL tube
glass (yes, I've broken the t-stat ones to get the mercury, but that was
older ones).

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Cheers,
WB
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"David Nebenzahl" wrote in message
s.com...

Dang, I hope so. As far as I know, the only kinds of mercury switches in
common use, aside from speciality ones, are ordinary household light
switches. They're talking about the CFL.