Gilchrist–Thomas process

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The Gilchrist–Thomas process or Thomas process is a historical process for refining pig iron, derived from the Bessemer converter. It is named after its inventors who patented it in 1877: Percy Carlyle Gilchrist and his cousin Sidney Gilchrist Thomas.

Excerpt from the Wikipedia article “Gilchrist–Thomas process”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Tbachner, Public domain, via Wikimedia Commons.