When National Steel became insolvent in 2003 most of the island's facilities were purchased, along with the rest of what is now called the Great Lakes Works, by United States Steel, which currently operates the mill. The island is home to the mill's ironmaking facilities (the rest of the mill's facilities, primarily steelmaking and processing, are located at the main plant a couple miles south in the city of Ecorse) which includes 3 blast furnaces ("A", "B" and "D") and raw materials storage areas. Ships supply large ore docks along the north ("1 Dock") and east ("3 Dock") shores of the island and large coal/coke/ore storage fields along the south and west ("B Area") shores. Number 5 Coke Battery located there, once an integral part of the mill, is independently owned and operated by EES Coke LLC, a DTE Energy company. Delray Connecting Railroad, a U.S. Steel company, also operates some rail facilities on the island. A "2-way" vehicle/rail bridge is the main access to the island. Secondary vehicle and rail bridges (the "Swing Bridge") at the southwestern corner of the island also allow mainland access.