Safety equipment for Mackinac Bridge construction (2 of 5)

Harthats with electric lights were used.  Here the hats and lights are in the rack and batteries are being charged., Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Harthats with electric lights were used. Here the hats and lights are in the rack and batteries are being charged.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1955-11