Industrial Cape Breton's economy faces significant challenges with unemployment and out-migration, as well as ongoing efforts to clean up the Sydney Tar Ponds; a legacy of DOSCO, and later DEVCO, producing coke to fuel the blast furnaces at the steel mill. The Muggah Creek estuary opening onto Sydney Harbour near the coke ovens site is contaminated with a variety of coal-based wastes. After extensive public consultation and technical study, a CDN$400-million cleanup plan, jointly funded by the federal and provincial governments awaits further environmental assessment.