Safety equipment for Mackinac Bridge construction (1 of 5)

Worker shows scar on a hardhat.  This hardhat probably saved someone a serious injury., Electronic reproduction of text.  The Mackinac Bridge 1954 - 1958. Mackinac Bridge Authority
Abstract/Description: Worker shows scar on a hardhat. This hardhat probably saved someone a serious injury.
Subject(s): Bridges--Design and construction
St. Ignace (Mich.)
Mackinaw City (Mich.)
Mackinac Bridge (Mich.)
Date Created: 1955 (approximate)