PSN-L Email List Message

Subject: Re: ebay auction
From: BOB BARNS royb1@...........
Date: Wed, 28 Jul 2004 20:09:59 -0400


Doug,
   Thanks for taking the time to characterize these things.  Could it be 
used to find subsurface water?
Bob Barns
   PS:The "photo of borehole geophones" on your website did not come up 
for me.

Doug Crice wrote:
> This is an exploration seismograph (not an earthquake seismograph) designed
> for refraction surveys using a sledgehammer as an energy source. This type
> of instrument is commonly used to map subsurface geology (e.g. depth to
> bedrock) down to a maximum of 30 meters. It looks like everything is there
> except the aluminum striker plate and of course a sledgehammer.
> 
> Read about refraction surveys here
> ftp://geom.geometrics.com/pub/seismic/Literature/s-tr2.pdf
> 
> Doug Crice
> Geostuff             http://www.georadar.com/geostuff.htm
> 12996 Somerset Drive                phone 1-530-274-4445
> Grass Valley,  CA  95945  USA    fax 1-530-274-4446
>  
> 
> -----Original Message-----
> From: psn-l-request@.............. [mailto:psn-l-request@............... On
> Behalf Of BOB BARNS
> Sent: Wednesday, July 28, 2004 10:54 AM
> To: psn mail
> Subject: ebay auction
> 
> Hi gang,
>     	SEISMOGRAPH scientific instrument by GEOMETRICS nr	 Item
> number: 
> 2259633751	
>    ends Aug. 2
> Bob Barns
> 
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