Industry | Iron Ore Processing |
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Founded | Mahoning Valley 1840 |
Founder | Daniel F. Rhodes Marcus Hanna |
Fate | Merged with Geon Company, August 2000, to form PolyOne Corporation |
Headquarters | , |
Number of employees | 7,149[1] |
Parent | PolyOne Corporation |
Subsidiaries | Hanna Coal & Ore Company (liquidized 1965) |
M. A. Hanna Company was an iron ore processing company located in Cleveland, Ohio, United States.