Photograph of Channel 5 electrical power grid, Henderson   Type:   Photograph Source Institution:   Henderson District Public Libraries Holding Location:   Henderson District Public Libraries Subject Keyword:   Television -- Transmitters and transmission Electric power distribution -- Automation Genre:   Photographs Photograph of Channel 5 electrical power grid, Henderson	Photograph of electrical distribution tunnel at Basic Magnesium, Inc.   Creator:   Basic Magnesium, Inc. ( Contributing Institution ) Publication Date:   1941-12-17 Type:   Photograph Source Institution:   Henderson District Public Libraries Holding Location:   Henderson District Public Libraries Subject Keyword:   Building Cranes, derricks, etc. Trucks Railroad tracks Electric power distribution Genre:   Photographs Photograph of electrical distribution tunnel at Basic Magnesium, Inc.	Photograph of electrical distribution tunnel at Basic Magnesium, Inc.   Creator:   Basic Magnesium, Inc. Publication Date:   1942-01-02 Type:   Photograph Source Institution:   Henderson District Public Libraries Holding Location:   Henderson District Public Libraries Subject Keyword:   Building Electric power distribution Plant construction Genre:   Photographs Photograph of electrical distribution tunnel at Basic Magnesium, Inc.	Photograph of electrical distribution tunnel at Basic Magnesium, Inc.   Creator:   Basic Magnesium, Inc. ( Contributing Institution ) Publication Date:   1942-03-18 Type:   Photograph Source Institution:   Henderson District Public Libraries Holding Location:   Henderson District Public Libraries Subject Keyword:   Building Concrete Electric power distribution Men Plant construction Genre:   Photographs Photograph of electrical distribution tunnel at Basic Magnesium, Inc.