National Canal Museum, Bethlehem Steel Corporate
Collection
Slag, the waste of steelmaking, was emptied
into Baltimore Harbor to expand the plant’s perimeter. When
the hot slag hit the water, flares of orange light shot into the
sky, visible for miles
around. The slag cooled into black crusty dirt. This image, typical
of slag operations at Sparrows Point, was taken by a company photographer
near Hellertown, Pa.