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by shardinator 2444 days ago
I don’t have a reference, but high quality steel making would be one.
1 comments
onecool 2444 days ago
You don't have a reference, because high quality steel was invented in the U.S.

https://www.popularmechanics.com/technology/infrastructure/a...

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shardinator 2442 days ago
I'm talking about an earlier time https://en.wikipedia.org/wiki/Wootz_steel
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