At 00:40 Station 30 along with R98 and E98 were dispatched on box 30-53 at Ryerson Tull 20 S. Steel Rd. for a building fire. Car 902 on scene reported heavy smoke through out. C-30 arrived and set up command. E-30 Arrived an stretched a 400′ 2” attack line and found a large piece of machinery on fire. E-98 arrived and prepared to reverse out from engine 30. Interior crews reported a machine on fire knocking the bulk of the fire down with dry chem. extinguishers then soaking it down. L-30 assisted interior crews; other companies to open up large doors for ventilation. 98’s were available at 01:45.