http://www.google.com.au/url?sa=t&rct=j&q=geothermal%20puga&source=web&cd=2&ved=0CFMQFjAB&url=http%3A%2F%2Fwww.rg.is%2Fen%2Flibrary-archive%2Fphoto-gallery%2Frg-pictures%2Fpuga-in-india&ei=xxZ1T9LcNYuZiAfwobjdDg&usg=AFQjCNG-i0lrRYF0NiXPtKx2ytCThLJwwg&cad=rja
what is RG doing sampling in PUGA for?