I presented this PowerPoint 2007 presentation to the meeting of the Committee of Editors of the Min. of Infrastructure in Jerusalem on Nov. 7. The distances might not be accurate to the 10s of meters. But they are not far off, when we consider how far objects will fly should there be an explosion at the plant. The 600 meter ring refers to the minimal safety distance that the explosion of natural gas might endanger for anyone LIVING in that area. Exactly...that doesn't mean that 700 meters isn't dangerous.