File:Heroult refining furnace Transversal view Stoughton.PNG

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Summary

Description	Français : Vue transversale du four à arc électrique de Paul Héroult. English: Transversal view of the electric arc furnace invented by Paul Héroult.
Date	1908
Source	The metallurgy of iron and steel p.445
Author	Dean Bradley Stoughton (1873-1959)

Licensing

Public domain	This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.	United States
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