[Hallicrafters] Code speed question.

[Waldo Magnuson]

    In WWII, England had hundreds of monitoring radio sites listening to 
the German military communications.  Most of the information was fed to 
Bletchley Park, the secret and famous code breaking installation NW of 
London.
    CW (morse code) was primarily used for these communications and 
mostly, maybe all, of the English operators were female.
    I recently read that the MINIMUM speed required for the listeners 
was 90 wpm.  Was code being sent at that speed and could large numbers 
of people copy at that speed?
    As I struggle with my 5 to 7 wpm, 90 sounds awfully fast.
73,  Skip Magnuson  W7WGM