An $8,500,000 building permit was issued 03/24/2016 for an addition to Building 260 on Mallinckrodt’s north riverfront site in St. Louis City. The contractor is listed as McGrath & Associates. In April of last year, Mallinckrodt open a new $12.25M building addition at the 150-year-old site north of downtown. That project was focused on increasing manufacturing efficiency and decreasing turnaround time on production of medicines.