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Steel replaced iron in buildings, bridges, and machinery. Steel is made with iron ore but it is stronger and can be used in more ways. Northeastern Ohio led the United States in steel production by the 1890s. Today, Ohio is still a leading steel industry state. More than 22,000 Ohioans work directly in steel production and processing each year. The total number of jobs related to the steel industry is nearly 97,000. That includes jobs in steel and in industries tied to steel.