It appears
that, at least as recently as August 2000, a Cyber
170 driving the Early Warning Radar System at Cape Cod Air
Force Station, known as "Pave Paws", was still in operation.
Discussions were going on at that time w/r/t its replacement.
This machine, sans media, disks, etc, might be a good candidate
for a future rescue (since it's military, they may want to
wipe the disks using hammers).
Actually, they use acid. :-(
Depends on the installation. I worked at a facility that burned
them. Or tried to, anyway.
-Dave McGuire