Search U.S. government technical reports digitized or harvested by TRAIL.
Metal-mine accidents in the United States during the calendar year 1913
Metal-mine accidents in the United States during the calendar year 1917 :(with supplemental labor and accident tables for the years 1911 to 1917, inclusive)
Production of explosives in the United States during the calendar year 1918 :with notes on coal-mine accidents due to explosives and a list of permissible explosives tested to March 31, 1919
Metal-mine accidents in the United States during the calendar year 1918