The Oglebay Norton Corporation operated ships on the Great Lakes. At one point their flagship was the SS Edmund Fitzgerald through their Columbia Transportation Division.
History
The company's roots go back to 1851, when Hewitt & Tuttle, an iron ore brokerage, formed a shipping subsidiary. after several mergers over the years, the firm became Oglebay, Norton in 1890, named for Earl Oglebay and David Z. Norton. The company was incorporated in 1924 Oglebay Norton was acquired by Carmeuse Lime & Stone, Inc. in 2008.
References
Oglebay Norton Corporation Wikipedia(Text) CC BY-SA