A worker operates a compressed air, percussion-type rock drill near the East Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel), of the Colorado-Big Thompson Water Diversion Project, in Grand County, Colorado. The man wears a safety...
Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Boring--Colorado--Grand County--1940-1950.; Construction workers--Colorado--Grand County--1940-1950.; Drilling & boring machinery--Colorado--Grand County--1940-1950.;...
View of construction at the East Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Larimer County, Colorado.; shows tracks, sheds, pipes, pipe sections, tailings, rocky crags, cirrus and cumulus...
Alva B. Adams Tunnel (Colo.)--1940-1950.; Larimer County (Colo.)--1940-1950.; Construction--Colorado--Larimer County--1940-1950.; Hydraulic facilities--Colorado--Larimer County--1940-1950.
View of the East Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Larimer County, Colorado. Shows tracks, pipes, rocks and signs that read: "U.S. Department of Interior, Bureau of Reclamation,...
Alva B. Adams Tunnel (Colo.)--1940-1950.; Larimer County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Larimer County--1940-1950.; Tunnels--Colorado--Larimer County--1940-1950.
Senators with hard hats ride in a train through the East Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Larimer County, Colorado. Shows rocks, pipe, tracks, possibly a walkway and signs that...
Alva B. Adams Tunnel (Colo.)--1940-1950.; Larimer County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Larimer County--1940-1950.; Railroads--Colorado--Larimer County--1940-1950.; Tunnels--Colorado--Larimer County--1940-1950.
Interior view of a machine shop near the East Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Larimer County, Colorado. Men pose next to machinery, tools, prongs and an anvil.
Alva B. Adams Tunnel (Colo.)--1940-1950.; Larimer County (Colo.)--1940-1950.; Employees--Colorado--Larimer County--1940-1950.; Interiors--Colorado--Larimer County--1940-1950.; Machine shops--Colorado--Larimer County--1940-1950.;...
[between 1940 and 1950?]
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