subsequently cut into slabs at a facility in Idaho Falls and used for the facade of the building. There was not enough granite extracted from the Little Cottonwood Canyon quarry for the entire project, so extra granite was brought in from the mid-west and used for the flooring. Completion The Salt Lake City Tornado hindered construction on August 11, 1999. Construction cranes toppled at the work site, and four injuries to crew were reported. Otherwise, construction proceeded smoothly and rapidly. Construction was complete enough for the building to be used for the 170th annual general conference on April 1 and 2, 2000. The pipe organ was not yet operational, so the Mormon Tabernacle Choir was accompanied by a synthesized organ amplified through the center's speaker system. Hinckley remarked in his opening address that over 370,000 people had inquired about tickets for the center's inaugural general conference. He also related that a black walnut tree that he had planted decades earlier in his backyard provided wood for the pulpit of the new center. The Conference Center was dedicated six months later, on October 8, during the 170th semiannual general conference. As part of the event, the dedicatory prayer was followed by a "hosanna shout"—a show of gratitude that dates to the early days of the Latter Day Saint movement. The shout involves participants waving white handkerchiefs while repeating "Hosanna, hosanna, hosanna, to God and the Lamb" three times. Though it had been used in public before, such as during the capstone ceremony for the Salt Lake Temple and at the church centennial celebration in 1930, before this public broadcast of the hosanna shout, some assumed it was exclusively related to temple dedications, which are not accessible to non-Latter-day Saints. The Conference Center dedication demonstrated that the hosanna shout, although considered sacred by the Latter-day Saints, is not necessarily used exclusively in temple-related settings. Schoenstein Organ at the Conference Center This organ is internationally significant, both because of its role in accompanying choirs in conferences, and also in that it is the only organ in the world that has 2 registers of pipes extending down into the 64' series, the 64' Contra Trombone and 64' Contra Gamba, which both extend 4 pipes down to GGGGG#, 13 semitones below the lowest note on a standard piano. The tallest pipe used to produce this note is approximately 40 feet (5 stories) tall. This organ