Men examine metal shoring near the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado
Date
[between 1940 and 1950?]
Notes
Accession number: 88.442.14; History Colorado.; Title penciled on negative sleeve with: "1336" and "safety film."; R7200054611
Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Construction workers--Colorado--Grand County--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Tunnels--Colorado--Grand County--1940-1950.