Teen in serious condition after fall at abandoned Minneapolis mill Multiple urban explorers have been hurt at the Fruen Mill. Author: Someone's been badly hurt in one of Minneapolis' abandoned mills — the latest in a long series of injuries at the sites. It happened at Fruen Mill, located just west of downtown on the 300 block of Thomas Ave N. Fire department officials say a 17-year-old boy fell five stories inside the building just after 10 p.m. on Friday, per MPR. The station notes that crews had to cut through fencing and plywood and climb down into the mill to rescue him.