character: Henry Bessemer
topic: The Bessemer Process for Steel Production
grade: 9
subject: Chemistry
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character: Andrew Carnegie
topic: Impact of the Bessemer Process on Steel Industry
grade: 9
subject: Chemistry
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character: Thomas Edison
topic: Technological Advances due to Steel Production
grade: 9
subject: Chemistry
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character: John Roebling
topic: Bridge Construction and Steel Use
grade: 9
subject: Chemistry
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