Not much safety involved!
This is Charles Ebbets while taking some of these photographs
And this one, is another mythical photo "Resting on the girder" of 1932
Many of these images comprise the Bettmann file, founded by Otto Bettmann in 1936. It contains a collection of 11 million photographs and includes some of the best historical images of the United States. At the present time the file belongs to the Corbis company, property of Bill Gates.