What is the use for HAARP
Posted: Fri Jun 27, 2014 10:18 pm
An Electromagnetic wave source for detecting underground complexes by monitoring VLF waves
Detection and Imaging of Underground Structures by Exploiting ELF/VLF Radiowaves
Link to PDF
Detection and Imaging of Underground Structures by Exploiting ELF/VLF Radiowaves
Link to PDF