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• Coke-oven accidents in the United States during the calendar year 1919
• Coke-oven accidents in the United States :during the calendar year 1920
• Metal-mine accidents in the United States :during the calendar year 1919 (with supplemental labor and accident tables for the years 1911 to 1919, inclusive)
• Metal-mine accidents in the United States :during the calendar year 1920
• Quarry accidents in the United States :during the calendar year 1920