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HKT
TOUR:
SERVICING
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Welcome to
the virtual tour documenting the 1996 servicing of HKT.
During a January 1996 visit, we noticed some problems with
the bell jars housing the seismometers.
With assistance from the
Albuquerque Seismic Lab (ASL),
we determined that the seals in the bell jar baseplates were leaking,
and that in the near future we would need to replace the
baseplates and relevel the instruments.
The UTIG staff decided to wait until June 1996 since we would need to relevel
the instruments at that time anyway.
This virtual tour documents these two visits to the mine and the work on
the seismometers.
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Above: Checking the bell jar pressure periodically is part of the
general maintenance of the seismic station. We cut small holes in the
inner protective styrofoam boxes so we would not need to expose the
bell jar assemblies to any salt dust. At this visit
in January 1996, we found that one bell jar had completely lost its vacuum
and that the other two were leaking.
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