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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Rock dust from sand dryer. First day of operation - Ellis Construction Co. hot-mix
Type: Visual Materials(Opens in new tab)
Date: 8/12/1955
Call number: photCL SCE 02 - 43542
Find out more: View in the Huntington Digital Library(Opens in new tab); View in the Library catalog(Opens in new tab)

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Portal Powerhouse - Another view of rock dust emitting from hot-mix plant operation.
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Portal Powerhouse - Dust drifting over Bechtel camp from hot-mix plant.
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Portal Powerhouse - Hot bitumulo [?] plant used on State Hwy. construction below powerhouse.
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Portal Powerhouse - Portal Forebay - Looking north-west - shows rock-lined upstream face of dam.
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Portal Powerhouse - Portal Forebay - Dam looking north-east shows compacting and lining upstream face with rock.
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Portal Powerhouse - Lower Portal release from Ward Tunnel prior to Portal Powerhouse construction.
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