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  Date-Issued

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  • West portal Continental Divide Tunnel
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    View of the entrance to the west portal of the Alva B. Adams Tunnel of the United States Reclamation Bureau Colorado Big Thompson Project water diversion tunnel in Grand County County, Colorado. A sign reads: "West Portal Continental Divide Tunnel,...
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    Colorado-Big Thompson Project (U.S.)--1940-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Tunnels--Colorado--Grand County--1940-1950.
  • 
    [between 1940 and 1947]
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  • West Port[al] CD cable car & electronics
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    Men pose by cable driven cars inside the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado.
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    Colorado-Big Thompson Project (U.S.)--People--1940-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Cable railroads--Colorado--Grand County--1940-1950.; Construction workers--Colorado--Grand County--1940-1950.;...
  • 
    [between 1940 and 1950?]
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  • West Port[al] CD timbering - from top of tunnel
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    Men work with metal shoring near the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel), part of the Colorado Big Thompson project, in Grand County, Colorado
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    Colorado-Big Thompson Project (U.S.)--People--1940-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Construction--Colorado--Grand County--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.;...
  • 
    [between 1940 and 1950?]
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  • WPCD Priming stick of powder in powder house
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    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
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  • WPCD exterior powder house
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    View of a mine 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. Crates of dynamite by snow and the corrugated metal building read: "Dupont...
  • 
    Colorado-Big Thompson Project (U.S.)--Facilities--1940-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Explosives--Colorado--Grand County--1940-1950.; Metal buildings--Colorado--Grand County--1940-1950.
  • 
    [1941?]
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  • WPCD
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    Workers stand beside railroad tracks, tools and ladders inside the the west portal of the Alva B. Adams Tunnel of the United States Reclamation Bureau Colorado Big Thompson Project water diversion tunnel (west portal of the Continental Divide...
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    Colorado-Big Thompson Project (U.S.)--People--1940-1950.; 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.;...
  • 
    [between 194 and 1947]
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  • West Port[al] CD Supt Kane, Walles, Morris, Robt.
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    Men, possibly Walles Kane and Robert Morris, converse at a desk; one holds a pipe, the other wears a hard hat in an office at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand...
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    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Conversation--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Men--Colorado--Grand County--1940-1950.; Offices--Colorado--Grand...
  • 
    [between 1940 and 1950?]
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  • WPCD house Grand Lake and track
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    View near the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. Railroad tracks, metal buildings, fuel tanks, and snow are by Grand Lake (frozen).
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    Colorado-Big Thompson Project (U.S.)--Equipment & supplies--`1940-1950.; Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Grand Lake (Colo. : Lake)--1940-1950.; Buildings--Colorado--Grand County--1940-1950.; Hydraulic...
  • 
    [between 1940 and 1950?]
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  • W.P.C.D. powder car
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    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?]
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  • 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?]
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  • 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?]
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  • 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?]
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  • W.P.C.D. office
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    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
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  • W.P.C.D. mucking
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    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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  • WPCD surface bldgs.
  • 
    View of multi-level buildings at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Larimer County, Colorado. Shows pipes, gabled buildings, smoke stacks and the snow covered ground.
  • 
    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Buildings--Colorado--Grand County--1940-1950.; Pipes--Colorado--Grand County--1940-1950.
  • 
    [between 1940 and 1942?]
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  • W.P.C.D. tunnel at portal
  • 
    Interior view of the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. Shows tracks, pipes, wires and possibly a switch.
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    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Tunnels--Colorado--Grand County--1940-1950.
  • 
    [between 1940 and 1947?]
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  • West Port[al] CD shanking steel - blacksmith shop
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    Interior view of a machine shop at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. Men work in a corrugated steel shed.
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    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Machine shops--Colorado--Grand County--1940-1950.
  • 
    [between 1940 and 1950?]
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  • West Port[al] CD muck train coming out of tunnel
  • 
    Men stand by a muck train that emerges from the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. Sign reads: "Positively No Admittance."
  • 
    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Cable railroads--Colorado--Grand County--1940-1950.; Construction workers--Colorado--Grand County--1940-1950.; Construction--Colorado--Grand County--1940-1950.; Hydraulic...
  • 
    [between 1940 and 1947?]
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  • West Port[al] CD timbering action
  • 
    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
  • 
    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.;...
  • 
    [between 1940 and 1950?]
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  • West Port[al] CD office man at office door
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    Men smile and pose at night by a metal building and a sign: "Office Platt Rogers, Inc. Contractors - Continental Divide Tunnel at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand...
  • 
    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Men--Colorado--Grand County--1940-1950.; Metal buildings--Colorado--Grand County--1940-1950.; Night--Colorado--Grand County--1940-1950.
  • 
    [between 1940 and 1947?]
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  • WPCD drilling
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    Men work with pneumatic drilling equipment at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado.
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    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Drilling & boring machinery--Colorado--Grand County--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.;...
  • 
    [between 1940 and 1950?]
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  • WPCD loaded face
  • 
    View of a tunnel charged with dynamite at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado.
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    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Explosives--Colorado--Grand County--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.;...
  • 
    [between 1940 and 1950?]
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  • WPCD mucking left 3/4
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    A man loads rubble onto an ore car 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.
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    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Laborers--Colorado--Grand County--1940-1950.;...
  • 
    [between 1940 and 1950?]
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  • WPCD mucking right 3/4
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    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.
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    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Laborers--Colorado--Grand County--1940-1950.;...
  • 
    [between 1940 and 1950?]
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  • WPCD mucking bucket spilling
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    Men work 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.
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    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Laborers--Colorado--Grand County--1940-1950.;...
  • 
    [between 1940 and 1950?]
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  • WPCD mucking bucket spilling
  • 
    Men load rubble 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. One man smokes a cigarette.
  • 
    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Laborers--Colorado--Grand County--1940-1950.;...
  • 
    [between 1940 and 1950?]
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  • WPCD setting jumbo - upper deck
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    Men work with pipes and hoses in the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado.
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    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Hydraulic facilities--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.; Laborers--Colorado--Grand County--1940-1950.;...
  • 
    [between 1940 and 1950?]
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  • EPCD camp from above portal
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    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...
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    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.
  • 
    [between 1940 and 1950?]
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  • EPCD Portal
  • 
    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.
  • 
    [between 1941 and 1951?]
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  • EPCD senators on man train
  • 
    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.
  • 
    [between 1941 and 1951?]
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  • EPCD, blacksmith shop
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    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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  • WPCD, man car
  • 
    View of a train car fitted for people near the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project located in Grand County, Colorado. Shows tracks, pipes, a gabled shed, a barrel, and possibly a...
  • 
    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Mine railroads--Colorado--Grand County--1940-1950.
  • 
    [between 1940 and 1950?]
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  • 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?]
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  • WPCD locomotives in yard
  • 
    View of the locomotive yard at the West Portal construction site of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. Shows men, mine locomotives, corrugated sheds, power station, a...
  • 
    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Mine railroads--Colorado--Grand County--1940-1950.; Railroad locomotives--Colorado--Grand County--1940-1950.
  • 
    [between 1940 and 1942?]
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  • WPCD yard
  • 
    View of the mine locomotive yard at the West Portal construction site of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. Shows tracks, power station, pipes, gabled metal sheds and...
  • 
    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Metal buildings--Colorado--Grand County--1940-1950.; Mine railroads--Colorado--Grand County--1940-1950.; Sheds--Colorado--Grand County--1940-1950.
  • 
    [between 1940 and 1942?]
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  • WPCD, general-outside
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    View of automobiles, a dump truck and gabled buildings at the West Portal construction site of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. Shows buildings and a snow covered...
  • 
    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Automobiles--Colorado--Grand County--1940-1950.; Construction--Colorado--Grand County--1940-1950.; Metal buildings--Colorado--Grand County--1940-1950.
  • 
    [between 1940 and 1942?]
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  • WPCD, unpacking Hercules Powder
  • 
    A man with a hat unpacks boxes of "Hercules Powder" explosives, probably at the West Portal of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Grand County, Colorado. Shows the corrugated powder house...
  • 
    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Employees--Colorado--Grand County--1940-1950.; Explosives--Colorado--Grand County--1940-1950.; Metal buildings--Colorado--Grand County--1940-1950.; Sheds--Colorado--Grand...
  • 
    [between 1940 and 1942?]
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  • WPCD sorting primers
  • 
    Interior view of the powder house at the West Portal site of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Big Thompson project in Grand County, Colorado. A man wears a hat and sorts the explosive primers. The boxes read: "Hercules...
  • 
    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Employees--Colorado--Grand County--1940-1950.; Explosives--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.
  • 
    [between 1940 and 1942?]
• • 
    
    
  • WPCD, making up primer
  • 
    Interior view of the powder house at the West Portal construction site of the Alva B. Adams Tunnel (Continental Divide Tunnel) of the Colorado Big Thompson project in Larimer County, Colorado. A man holds an explosive and shows the primer and fuse....
  • 
    Alva B. Adams Tunnel (Colo.)--1940-1950.; Grand County (Colo.)--1940-1950.; Employees--Colorado--Grand County--1940-1950.; Explosives--Colorado--Grand County--1940-1950.; Interiors--Colorado--Grand County--1940-1950.
  • 
    [between 1941 and 1942?]

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