Algoma Steel went through years of ups and downs, marked by a lack of strong leadership, and in 1935 the company was again forced into receivership, and with it went the city: a plaintive cry for help from the mayor to Dunn details the ordeal. This time, at the age of 61, Dunn engineered a takeover so that he became the sole controlling shareholder thereby allowing him to take the tough but necessary reorganization measures to restore profitability to the steel maker. To accomplish this, he raised capital by negotiating bank loans, selling his beloved art collection and taking stock instead of income. As Algoma Steel's president and chairman of its board of directors, he successfully turned it into one of the largest steel mills of the day and for more than twenty years guided the fortunes of the company he would eventually make into one of the most profitable producers in Canada.