[time-nuts] Vibration isolation of quartz oscillators

[Francis Grosz]

Folks,

     A long time ago I worked for a division of Litton Industries.  One day
we visited the
Litton Guidance and Control Systems Division, which manufactured Optical
Gyros.  Part
of the test facility was a granite slab mounted using isolators on a column
in a hole.  I was told that the column went down to bedrock to minimize
vibration.

         Francis Grosz