MG 23 Item 21:  Ray-Chino Mining Co., Santa Rita Mine, Silver City, New Mexico, showing open pit mining operations.  Scenes from Miami, Arizona mining operations have been identified toward the end of the film.
(Video is 11 minutes long)
 
This film is held as part of the Harry Webb Marsh Collection, Manuscript Group 23.  Funding for this film preservation was provided by Freeport-McMoRan Copper & Gold Company.  Preservation work was accomplished by Triage Archival Restoration Services, Los Angeles.