DOSCO was one of the largest private employers in Canada when it was purchased as a subsidiary of A.V. Roe Canada. The company was dissolved in 1968 after the majority of its coal mining and steel mill industrial assets in Industrial Cape Breton were expropriated and nationalized by the federal and provincial governments (see Sydney Steel Corporation and DEVCO). Other subsidiaries included mining, engineering, shipping, rail car manufacturing and shipbuilding: Halifax Shipyards Cumberland Railway and Coal Company Sydney & Louisburg Railway, an historic railway in Cape Breton Island, NS.
DOSCO was one of the largest private employers in Canada when it was purchased as a subsidiary of AV Roe Canada The company was dissolved in 1968 after the majority of its coal mining and steel mill industrial assets in Industrial Cape Breton were expropriated and nationalized by the federal and provincial governments (see Sydney Steel Corporation and DEVCO) Other subsidiaries included mining engineering shipping rail car manufacturing and shipbuilding Halifax Shipyards Cumberland Railway and Coal Company Sydney & Louisburg Railway an historic railway in Cape Breton Island NS