rainbow rust

About 20 feet above ground in the blast furnace area of Bethlehem Steel this multicolored corrosion is blistering away the outer lining of one of the blast furnace cylinders.

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Bethlehem Steel

1. three blue ... 2. inside a... 3. door with... 4. rusty pane 5. rainbow rust 6. brick and ivy 7. leaves... 8. leaves... ... 17. a garden in...