Smaller buildings were demolished in early 2007, and the two towers were imploded at 2:34 a.m. on March 13, 2007, after a four-minute fireworks show. Thousands of spectators watched the implosion from nearby areas. The towers contained more than 500,000 tons of concrete and steel, and it took more than 20 minutes for the resulting dust to disappear. The debris clean-up was expected to take two months. The implosion was overseen by Controlled Demolition, Inc., which had handled every prior resort implosion on the Las Vegas Strip. The 32-story tower is the tallest building to ever be imploded on the Strip.