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  • All fields: Colorado-big
(69 results)



Display: 50

    • EPCD, drilling from column

    • 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.;...
    • [between 1940 and 1944?]
    • Alva B. Adams Tunnel

    • View of the West Portal of the Continental Divide Tunnel (Alva Adams Tunnel), a part of the Colorado-Big Thompson Project, during construction on the east end of Grand Lake in Grand County, Colorado. The work was undertaken by the United States...
    • United States. Bureau of Reclamation--Facilities.; Water diversion--Colorado--Grand County--1930-1940.; Water tunnels--Colorado--Grand County--1930-1940.; Alva B. Adams Tunnel (Colo.)--1930-1940.; Grand County (Colo.)--1930-1940.;...
    • [between 1939 and 1940?]
    • WPCD Priming stick of powder in powder house

    • Interior view of an explosives shed at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. A man inserts a fuse into dynamite; crate reads: "Dupont." A calendar,...
    • Colorado-Big Thompson Project (U.S.)--People--1940-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Dynamite--Colorado--Grand County--1940-1950.; Explosives--Colorado--Grand County--1940-1950.;...
    • 1941, March
    • W.P.C.D. powder car

    • A worker holds sticks of dynamite removed from a cart containing explosives at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. The man wears work overalls and a...
    • Colorado-Big Thompson Project (U.S.)--People--1930-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1930-1950.; Explosives--Colorado--Grand County--1930-1950.; Mine railroads--Colorado--Grand County--1930-1950.
    • [between 1930 and 1950?]
    • W.P.C.D. powder car

    • A worker removes blasting powder from an explosives car near the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. Label painted on the box reads "Hercules Powder."...
    • Colorado-Big Thompson Project (U.S.)--People--1930-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1930-1950.; Explosives--Colorado--Grand County--1930-1950.; Mine railroads--Colorado--Grand County--1930-1950.
    • [between 1930 and 1950?]
    • W.P.C.D. powder house loading primers

    • A worker prepares an explosive charge in the powder house near the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County Colorado. The man wears work overalls and a cap. He places a...
    • Colorado-Big Thompson Project (U.S.)--People--1930-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Explosives--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.
    • [1946 July?]
    • W.P.C.D. powder house

    • A worker stacks explosive charges in the powder house at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. He wears work overalls and a cap. Fuses are wrapped...
    • Colorado-Big Thompson Project (U.S.)--People--1930-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Explosives--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.
    • [between 1940 and 1950?]
    • W.P.C.D. office

    • Clerks work in the office of the Colorado Big Thompson project at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) in Grand County, Colorado. One man sits at a desk and works at a typewriter. Ledger books sit open on an oak...
    • Colorado-Big Thompson Project (U.S.)--People--1930-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Offices--Colorado--Grand County--1940-1950.
    • 1942 March
    • W.P.C.D. mucking

    • Men load rubble onto ore cars in a tunnel at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. The men wear work overalls, hard hats, and electric mine lamps....
    • Colorado-Big Thompson Project (U.S.)--People--1930-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Employees--Colorado--Grand County--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Mine...
    • [between 1940 and 1950?]

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