MUFON-UFO-Journal-1969-5-May-Skylook_page_14

MUFON-UFO-Journal-1969-5-May-Skylook | page 14 | https://thedailydialectics.com/pdfs/space/ufos/mufon/MUFON-UFO-Journal-1969-5-May-Skylook/MUFON-UFO-Journal-1969-5-May-Skylook.pdf

Physical Evidence oe eee eee + ee By John’ Keel dl. The primary substances repeatedly found at alleged UFO. landing sites over the past twenty years are silicon, aluminum and magnesium. Often all three substances have been found in combination. Silicon is a very common terrestrial material used…