"Since a method for inexpensively mass producing the iron alloy steel was developed by English inventor Henry Bessemer in the

"Since a method for inexpensively mass producing the iron alloy steel was developed by English inventor Henry Bessemer in the 1850s, a sprawling industry has grown which today turns over $2.5tn and employs millions of people.”
@Michael_Pooler
ft.com/content/46d472… https://t.co/zhL3ciPXXc

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