William Rice, BS CE, MS CE, PE -- Licensed Professional Engineer, State of Vermont. He worked on structural steel and concrete buildings in Boston, New York, and Philadelphia for two of the nation's largest building construction companies; the Austin Company and the George A. Fuller Construction Company. Former Professor at Vermont Technical College where he taught engineering materials, structures lab, and other building related courses for over 20 years. * Essay Vermont Guardian 3/1/07: "Having worked on structural steel buildings as a civil engineer in the era when the Twin Towers were designed and constructed, I found some disturbing discrepancies and omissions concerning their collapse on 9/11. ... The interesting fact is that each of these 110-story Twin Towers fell upon itself in about ten seconds at nearly free-fall speed. This violates Newton's Law of Conservation of Momentum that would require that as the stationary inertia of each floor is overcome by being hit, the mass (weight) increases and the free-fall speed decreases. Even if Newton's Law is ignored, the prevailing theory would have us believe that each of the Twin Towers inexplicably collapsed upon itself crushing all 287 massive columns on each floor while maintaining a free-fall speed as if the 100,000, or more, tons of supporting structural-steel framework underneath didn't exist. Controlled demolition