During detonation, criticality was achieved by implosion. A cataclysmic implosion of the core takes place within seconds. Consequently, the country teetered toward economic dissolution and implosion. Another dangerous scenario is the partial failure of an attempted implosion. The movement largely faded following the dot-com bubble implosion of 2000. Demolition officials said it was a "textbook implosion". Almost all nuclear bombs use some kind of implosion method. A third danger comes from air overpressure that occurs during the implosion. They provided the Soviets with detailed designs of the implosion bomb and the hydrogen bomb. Much of the property was demolished during the first implosion. Over was demolished, making it the third largest building implosion in U.S. history. Teller made valuable contributions to bomb research, especially in the elucidation of the implosion mechanism. A firework display and countdown led up to the implosion. The creature damages vital systems, causing the pressure to drop and an implosion to occur. A revival had been planned for 1978, but was a victim of the DC Implosion.