Titles read: "Cliff Climbers of Industry. Boulder Dam U.S.A. where the builders of this mighty work defy sudden death - ".
Boulder Dam, Colorado, United States of America (USA).
Various shots of men arriving at Boulder Dam (formerly known as Hoover Dam) and working on the construction...
Unidentified out takes (cuts, rushes) - CP UNI 3.
Men lay bricks - very short segment of film.
Footage of the side of a rock face being dynamited in a quarry.
A man is building a house on a disused railway line.
Bricklayer wears motorcycle crash helmet when carrying bricks up ladder.
Process of brick making - from clay digging to a house building.
Concrete girders are transported outside.
Workers put section of bridge into position on river.