A massive 50-year-old landmark residence hall at the University of Kansas has been imploded as planned.

The Lawrence Journal-World reports that crews detonated about 750 pounds of explosives spaced through McCollum Hall on Wednesday. The implosion of the 10-story, 220,000-square-foot building also included keeping onlookers at least 600 feet from the site.

The university arranged the demolition work on the first day of Thanksgiving break so most students would be away from campus.

McCollum Hall opened in 1965 and was replaced with two new residence halls that opened at the start of the school year. The new dorms house about 350 students each.

The university has planned surface parking in the space where McCollum once stood.