Gallery›Digital Commonwealth — Boston Public Library›The jet tapping process shown here uses a rocket-like explosive charge to blast through a special clay plug at the rear of the open hearth furnace, thus permitting the hot steel to flow into an awaiting ladle.
The jet tapping process shown here uses a rocket-like explosive charge to blast through a special clay plug at the rear of the open hearth furnace, thus permitting the hot steel to flow into an awaiting ladle.
Digital Commonwealth — Boston Public Library

The jet tapping process shown here uses a rocket-like explosive charge to blast through a special clay plug at the rear of the open hearth furnace, thus permitting the hot steel to flow into an awaiting ladle.

Bethlehem Steel Corporation · [ca. 1964–1972]

CC0 — Public Domain
Digital Commonwealth — Boston Public Library

[Information from item housing] Industry & Manufacturing

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