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The big "bull wheel" tensioning devices for 500kV transmission line construction were much larger than their 220kV ancestors used in the building of the Hoover Dam lines

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Title: The big "bull wheel" tensioning devices for 500kV transmission line construction were much larger than their 220kV ancestors used in the building of the Hoover Dam lines
Contributing Institution: Huntington Library
Collection: Southern California Edison Photographs and Negatives
Rights Information: For information on using Huntington Library materials, please see Reproductions of Huntington Library Holdings: https://www.huntington.org/library-rights-permissions
Description: The big "bull wheel" tensioning devices for 500kV transmission line construction were much larger than their 220kV ancestors used in the building of the Hoover Dam lines. Pg. 222.
Type: image
Format: 420203 Bytes
Extent: Copy negative ; 8x10
Identifier: 11 - 00447
232759
http://hdl.huntington.org/cdm/ref/collection/p16003coll2/id/5617
Subject: Electric lines
Electric lines--Poles and towers
Construction
Construction crew
Electric insulators and insulation
Place: California
Source: Southern California Edison Photographs and Negatives
Iron Men and Copper Wires
Southern California Edison Photographs and Negatives, Huntington Digital Library

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