Hi Doug,
These are military seismic detectors used to monitor troop and vehicle
movement
along trails/roads. Similar  units are available from Fair Radio and
various surplus sources
for much less.
Dave Latsch

Doug Crice wrote:

> Does anybody recognize these "seismic sensors"?  Since they come from
> the area of Mt. Hood, might they be micro-earthquake gear for tracking
> volcanos?
>
> http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=460949352
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Hi Doug,

These are military seismic detectors used to monitor troop and vehicle
movement

along trails/roads. Similar  units are available from Fair Radio
and various surplus sources

for much less.

Dave Latsch
Doug Crice wrote:
Does anybody recognize these "seismic sensors"? 
Since they come from

the area of Mt. Hood, might they be micro-earthquake gear for tracking

volcanos?
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem
&item=460949352

__________________________________________________________
Public Seismic Network Mailing List (PSN-L)
To leave this list email PSN-L-REQUEST@.............. with

the body of the message (first line only): unsubscribe

See http://www.seismicnet.com/maillist.html
for more information.