This post involves a storied building in Chicago’s Diamond District. St. Paul Mercury Insurance v. Aargus Security Systems, Inc., 2013 IL App (1st) 120784, examines the nature and scope of an independent contractor’s liability in a multi-million dollar property damage case. Facts: The Mallers Building (see 1993 article here) is a nearly century-old, 21-story building in downtown Chicago that primarily houses jeweler tenants. In the …