*Patent  Process  No.  US  8,688,423  B2     www.willowstick.com   Dam  Seepage  Investigation  in  Australia     Background   An  Australian  water  utility  had   observed  multiple  seep  locations   along  4  ½  kilometers  of  one  of  it’s   dams.    They  wanted  to  gain  a   better  understanding  of  where   seepage  was  passing  through

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