Construction work on the enormous Boulder Dam in Colorado, United States of America.
Titles read: "A Mighty Project - Come with the Pathetone Cameraman now to the famous Boulder Dam, rapidly rising from its river bed."
Boulder Dam, Colorado, United States of America (USA).
Various shots of the construction of the huge Boulder Dam. Large foundation blocks on the canyon floor are filled with concrete. Men work on the canyon walls to remove loose rocks. The commentator gives us several statistics about the building of the dam and says it should be finished by 1938.