Construction has begun at the site of the former United Airlines headquarters in Mount Prospect, Illinois, with recent demolition at the property clearing the way for the creation of a $2.5 billion data center campus expected to launch in 2024. Officials with CloudHQ, a Washington, D.C.-based global data center provider that specializes in the design, development and operation of “hyperscale” data center facilities, said the 1.5 million-square-foot campus is expected to create 75 to 100 jobs for each of three planned buildings, including operations, maintenance and security positions. The site…