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Visual Materials

Portal Powerhouse

Description: Portal Powerhouse - Installing backing I-beams (15") prior to forming for concrete. Strengthening to reduce vibration during high flows.
Type: Visual Materials(Opens in new tab)
Date: 11/3/1955
Call number: photCL SCE 02 - 43902
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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