The coal and steel industries went into decline following World War II and never fully recovered. They were nationalized by the federal and provincial governments during the late 1960s with the intention of closing them by the 1980s, however production increased in the 1970s as a result of rising world oil and steel prices. By the 1990s, environmental degradation (see Sydney Tar Ponds) and economic ruin was facing the industrial Cape Breton region. The steel mill and last coal mine were closed in 2001 and the area has been struggling to adapt.