Hi Everyone,

Received this from Charlie Thompson. Interesting article...

Regards,
Larry Cochrane
Redwood City, PSN

------- Original Message --------
Subject: 	Optical seismometer
Date: 	Tue, 15 Jan 2013 15:33:51 -0600

Larry,
I thought you might find this interesting:
http://www.ctbto.org/fileadmin/user_upload/SandT_2011/presentations/T3-O5%20J_Berger%20Optical%20Seismometer.pdf
-Charlie


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