Hello,

I invented a 3 component geophone and an apparatus to plant this geophone in 
shallow holes. It also helps align and level the geophone using a compass and 
level on the handle of the planting tool.  (US patent no. 5,007,031 Granted 
on April 9,1991)  I liked the idea of planting the geophone a few feet below 
the surface to reduce surface noise and planted in more compacr soil.  I use 
a Vernier Software program and hardware with three channel inputs. This works 
well with nearby seismic events.  The software has the ability to 
mathematically "rotate" the two horizontal geophone elements to help find the 
direction to the event.

Contact me if I can be of more help.

Best of Luck,

George Erich
GeE777@.......


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