les
  i live in houston texas. houston is not known for seismic activity.in
the last year i have recorded about a hundred or more events . i have two
leahman detectors up and running  and i get anything that a professional
detector would get .frank cooper lives nearby in frindswood , tx and he
gets the same results. you have the ideal location for a seismic
detector. anything recorded in your area is of a high interest to
seismologist . can you build a leahman seismic detector that will  enable
you to record events world wide as well as local events? the answer is
yes, yes yes.
  so, do it and good luck.
                                                    john c cole 

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