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when was us steel formed
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who formed us steel, cold formed steel structures in us, when was us steel formed, us steel formed, who was the founder of us steel, who started the us steel corporation, who founded us steel corporation, when was us steel founded, history of us steel, founder of us steel corporation, who started the steel industry in america, us steel company history, united states steel corporation founder, history of us steel corporation, united states steel company history, history of steel in america, when was steel created
