WATCH: University Of Kansas Residence Hall Demolished In 18 Seconds

A University of Kansas residence hall in Lawrence came crashing down Wednesday.  

Workers used about 750 pounds of explosives to implode 50-year-old McCollum Hall. In 18 seconds, the 10-story, three-wing, 220,000-square-foot residence hall became a pile of rubble.  

The dorm opened in 1965 and initially housed 910 students.  It has been the king - at least in size - of KU's Daisy Hill dorms ever since.

Demolition preparations began last month. The work has included removing and hauling off all soft material such as wood and sheet rock, and removing tons of metals for recycling.

The space will be turned into a parking lot for two new nearby dorms.