15 seconds to fell ASU residence hall.
Residents of downtown Boone heard a series of explosions on Sunday morning as Contract Drilling and Blasting LLC imploded Winkler Hall at Appalachian State University.
Built in 1974, the 11-story residence hall housed 132 students. Because the cost to renovate Winkler Hall proved to be impractical, the building is being razed, the school said.
