Rossborough (an Opta Minerals Company)

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Based in Walkerton, IN, United States. Rossborough is a leading producer of prime magnesium products. It is a unit of Opta Minerals Inc. It also provides hot metal desulfurization products for the steelmaking industry.


  • 205 Plymouth LaPorte Trail State Highway 104  

Town, State, Country

  • Walkerton, IN, United States  


  • 46574 
  • Year Established 2001
  • No. of employees 51-100
  • End User Industries Steel, refractory


  • ISO 9001

Trade Association Membership

  • AIST - Association for Iron and Steel Technology
  • AISI - American Iron and Steel Institute
    AISI - American Iron and Steel Institute
  • IMA - International Magnesium Association


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