On Sat 05 Jul 2008 03:53:32p, Virginia Tadrzynski told us...

Ginny, conmmon sense use with pressure cookers is all it takes.  My mom had
three, a 4-quart, an 8-quart, and a canner.  She used them all and fairly
often.  In the many decades she used them, there was never a single mishap.  
With pressure cookers, it's all about due diligence.

My aunt, OTOH, paid little attention to how she used her pressure cookers.  
On two different occasions she let the pressure build up too high in her
canner and the lid blew off and into the ceiling.  (The safety valves don't
always work, although hers was old.)  Luckily no one was in the room, but
since she was canning tomatoes, her entire kitchen looked like one. :-)

--
             Wayne Boatwright            
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     Saturday, 07(VII)/05(V)/08(MMVIII)
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   I never remember a face, but I always  
              forget a name.              
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