Iron work is a skilled craft that dates back to the late 19th century and is a result of the rapid rise in the use of modern steel in iron bridges and skyscrapers [REF].
The union was formed on February 4, 1896 at a meeting in Pittsburgh, Pennsylvania with 16 delegates from the local unions in Boston, Massachusetts, Buffalo, New York, Chicago, Illinois, Cleveland, Ohio, New York City, New York, Detroit, Michigan, Philadelphia, Pennsylvania and Pittsburgh [REF].