Steel pours from a 35-ton electric furnace, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pa. Quality steels and alloys are produced in these furnaces, which allow greater control of temperature than other conversion furnaces. The proportion of electric furnace steel is rising, even though this process is expensive. "The furnace is tilted for the pouring." The flying sparks indicate the fluidity of the steel.
<bdi><a href="https://en.wikipedia.org/wiki/en:Alfred_T._Palmer" class="extiw" title="w:en:Alfred T. Palmer"><span title="photographer">Alfred T. Palmer</span></a>
</bdi>
1941
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