From Introduction: "The lack of comparable and accurate statistics of coal-mine accidents in the united States as a whole led the Bureau of Mines in 1911 to undertake the collection of such data. The mining departments of the leading foreign coal-producing countries have long taken cognizance of the importance of statistics. The bureau feels that in presenting the tables embodied in this report it is offering the and comparable statistics of coal-min accidents for the country as a whole that have ever been published."

The National Museum of the Pacific War presents an oral interview with James T. Murphy. Murphy grew up in Montana and joined the Army Air Corps in May 1941. Once he finished training, he was assigned to the 43rd Bomb Group, 63rd Bomb Squadron. He then went to reconnaissance for the Battle of Midway. He then rejoined the Pacific Theater and pacticipated in skip bombing and flying B17s. He tells the story of receiving his Silver Star from General Douglas MacArthur. He mentions returning to the Air Force in 1949 and remaining in service for 20 years, until he left to join NASA as a civilian. He also mentions writing a book on Skip Bombing in the 1990s.