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Notes:
Title from item or materials accompanying item.
Written on back in pencil: "Driving head in position with wooden cach behind it. They drove it forward with steam.-- Bret."
Stamped on back: Bretton Perry, Appletree Lane, Norwalk, CT 06850.
Notes (date):
Date supplied by cataloger.
Notes (historical):
This photograph and others like it (FIC HT 10 through 15) show what is called a "tunnel shield", used for tunneling in mud. There is no evidence that it was used at the Hoosac Tunnel, however--therefore, these photographs may relate to a different dig.-- Gary Smith, May 2003.
