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• Accidents at metallurgical works in the United States :during the calendar year 1921
• Accidents at metallurgical works in the United States :during the calendar year 1922
• Accidents at metallurgical works in the United States :during the calendar year 1923
• Accidents at metallurgical works in the United States :during the calendar year 1924
• Accidents at metallurgical works in the United States :during the calendar year 1925
• Accidents at metallurgical works :during the calendar year 1926
• Accidents at metallurgical works in the United States :during the calendar year 1930
• Accidents at metallurgical works in the United States :during the calendar year 1931
• Accidents at metallurgical works in the United States during the calendar year 1932