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IMPORTANT DATES IN MIDDLETOWN STEELMAKING HISTORY Dec. 27, 1899: Company was incorporated as the American Rolling Mill Co. April 7, 1994: The name Armco was replaced by AK Steel.

April 7, 2017: The company celebrated the grand opening of its new Research and Innovation Center in Middletown.

March 13, 2020: ClevelandCliffs announced it had purchased AK Steel for

$1.1 billion.

Feb. 26, 2021: ClevelandCliffs sent out an email announcing it was changing name of AK Steel.