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  • All fields: Hydraulic
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Display: 50

    • Denver Municipal Facts: Volume 2 Number 6, 1910 February 5

    • Newsletter produced by the City of Denver highlighting the civic, administrative, and informational aspects of government within the City.
    • Local government--Colorado--Denver.; Cities and towns--Colorado--Denver.
    • 19100205
    • Denver Municipal Facts: Volume 1 Number 17, 1909 June 12

    • Newsletter produced by the City of Denver highlighting the civic, administrative, and informational aspects of government within the City.
    • Local government--Colorado--Denver.; Cities and towns--Colorado--Denver.
    • 19090612
    • Denver Municipal Facts: Volume 3 Number 6, 1911 February 4

    • Newsletter produced by the City of Denver highlighting the civic, administrative, and informational aspects of government within the City.
    • Local government--Colorado--Denver.; Cities and towns--Colorado--Denver.
    • 1911024
    • Denver Municipal Facts: Volume 1 Number 9, 1909 April 17

    • Newsletter produced by the City of Denver highlighting the civic, administrative, and informational aspects of government within the City.
    • Local government--Colorado--Denver.; Cities and towns--Colorado--Denver.
    • 19090417
    • Denver Municipal Facts: Volume 2 Number 22, 1910 May 28

    • Newsletter produced by the City of Denver highlighting the civic, administrative, and informational aspects of government within the City.
    • Local government--Colorado--Denver.; Cities and towns--Colorado--Denver.
    • 19100528
    • Place names of Colorado : a genealogical & historical guide to Colorado sites

    • The primary objective of this index is to contain a comprehensive listing of place names or sites in Colorado that would direct the researcher to recent and readily available publications. Included in this publication for each site or place name,...
    • Names, Geographical--Colorado.; Colorado--History, Local.
    • 1999
    • Ye old mill

    • View of hydraulic mine processing facility ruins, in (probably) Colorado or Utah; shows a log-sided building with a frame water-wheel.
    • Abandoned buildings--1890-1910.; Hydraulic mining--1890-1910.; Log buildings--1890-1910.; Mining--1890-1910.; Waterwheels--1890-1910.
    • [between 1890 and 1910?]
    • Waterwheel

    • View of mine processing facility ruins with a waterwheel and flume, in (probably) Glenwood Springs, Garfield County, Colorado.
    • Abandoned buildings--Colorado--1880-1900.; Flumes--Colorado--1880-1900.; Hydraulic mining--Colorado--1880-1900.; Mining--Colorado--1880-1900.; Waterwheels--Colorado--1880-1900.
    • [between 1880 and 1900?]
    • Idaho waterwheel

    • View of gold mine ore processing facility ruins in Idaho; men examine the collapsing frame structure and waterwheel.
    • Abandoned buildings--Idaho--1940-1960.; Hydraulic mining--Idaho--1940-1960.; Mining--Idaho--1940-1960.; Waterwheels--Idaho--1940-1960.
    • [between 1940 and 1960?]
    • Abandoned mine

    • Prospectors dig near an abandoned mine and a sluice in Colorado.
    • Abandoned mines--Colorado--1880-1900.; Hydraulic mining--Colorado--1880-1900.; Miners--Colorado--1880-1900.; Mining--Colorado--1880-1900.; Prospecting--Colorado--1880-1900.
    • [between 1940 and 1960]
    • Old workings of a pit

    • View of an abandoned gold placer mining pit near Breckenridge, Summit County, Colorado shows: pipes and tailings with valley and mountains in background.
    • Abandoned mines--Colorado--Breckenridge--1880-1890.; Breckenridge (Colo.)--1880-1890.; Gold mining--Colorado--Breckenridge--1880-1890.; Hydraulic Mining--Colorado--Breckenridge--1880-1890.; Mining--Colorado--Breckenridge--1880-1890.
    • [between 1880 and 1890?]
    • Old mining works Montgomery Spanish arastra

    • View of an abandoned placer mine operation near Montgomery (Park County), Colorado. Wooden sluices and cabins are nearby.
    • Abandoned mines--Colorado--Montgomery--1870-1880.; Sluices--Colorado--Montgomery--1870-1880.; Montgomery (Colo.)--1870-1880.; Hydraulic mining--Colorado--Montgomery--1870-1880.; Mining--Colorado--Montgomery--1870-1880.
    • [between 1870 and 1880]
    • Old dredge near Fairplay, Colo.

    • Abandoned hydraulic placer gold mining dredge on the frozen South Platte River near Fairplay, Park County, Colorado.
    • Abandoned mines--Colorado--Park County--1920-1930.; Dredges--Colorado--Park County--1920-1930.; Gold dredging--Colorado--Park County--1920-1930.; Park County (Colo.)--1920-1930.; South Platte River (Colo. and Neb.)--1920-1930.; Hydraulic...
    • January 1929
    • An old timer panning gold

    • An elderly man placer mines along the banks of an unidentified stream, Colorado.
    • Aged persons--Colorado--1900-1920.; Hydraulic mining--Colorado--1900-1920.; Mining--Colorado--1900-1920.
    • [between 1900 and 1920?]
    • Billy Class, who prospected the Snowy Range area for many years.

    • Miner Billy Class squats, panning for gold (hydraulic mining), in Albany County, Wyoming.
    • Albany County (Wyo.)--1910-1920.; Gold mining--Wyoming--Albany County--1910-1920.; Hydraulic mining--Wyoming--Albany County--1910-1920.; Miners--Wyoming--Albany County--1910-1920.; Mining--Wyoming--Albany County--1910-1920.; Class, Billy.
    • [between 1910 and 1915?]
    • Hydraulic gold mining, Alder gulch, near Virginia City

    • Miners sit and stand near hydraulic mining equipment at a placer mining operation in Alder gulch, Madison County, Montana. Water runs from the top of the gulch. Shows sluice boxes; water sprays from a monitor nozzle.
    • Alder Gulch (Madison County, Mont.)--1870-1880.; Madison County (Mont.)--1870-1880.; Expeditions & surveys--Montana--Madison County--1870-1880.; Hydraulic Mining--Montana--Madison County--1870-1880.; Mining--Montana--Madison County--1870-1880.;...
    • [between 1870 and 1880?]
    • Virginia City, Montana

    • View of Virginia City, looking north in (Madison County) Montana. Shows a rocky barren landscape with a gulch, a main street lined with frame buildings, log buildings and fences at the foot of Alder Gulch, a placer mining district.
    • Alder Gulch (Madison County, Mont.)--1870-1880.; Virginia City (Mont.)--1870-1880.; Cities & towns--Montana--Virginia City--1870-1880.; Expeditions & surveys--Montana--Virginia City--1870-1880.; Hydraulic mining--Montana--Virginia City--1870-1880.;...
    • [1871.]
    • Hydraulic Mining

    • View of placer mining operations in probably Alder Gulch (Madison County), Montana. Men spray water at an embankment with monitor nozzles.
    • Alder Gulch (Madison County, Mont.)--1880-1900.; Madison County (Mont.)--1880-1900.; Gold mining--Montana--Madison County--1880-1900.; Hydraulic mining--Montana--Madison County--1880-1900.; Miners--Montana--Madison County--1880-1900.;...
    • [between 1880 and 1900?]
    • Hydraulic, gold mining, Alder Gulch near Virginia City

    • Miners monitor the flow of water through hoses and sluice boxes in Alder Gulch, Madison County, Montana. Water from the top of the gulch and from a monitor nozzle erodes the soil of the hill.
    • Alder Gulch (Mont.)--1870-1880.; Madison County (Mont.)--1870-1880.; Expeditions & surveys--Montana--Madison County--1870-1880.; Hydraulic Mining--Montana--Madison County--1870-1880.; Miners (Mont.)--Montana--Madison County--1870-1880.;...
    • [1871]
    • Virginia City, M.T.

    • View of Virginia City, Madison County, Montana. Shows houses and commercial buildings. A sluice box sits at the edge of Alder Gulch. Mountains are in the distance.
    • Alder Gulch (Mont.)--1870-1880.; Virginia City (Mont.)--1870-1880.; Canyons--Montana--Virginia City--1870-1880.; Cities & towns--Montana--Virginia City--1870-1880.; Hydraulic mining--Montana--Virginia City--1870-1880.; Mining--Montana--Virginia...
    • [1871]
    • Alma Colorado, where Hilma Hanson was born in 1877

    • This view west of Alma, (elevation, 10,353 feet) in Park County, Colorado, includes wood frame barns, sheds, false front commercial buildings, log cabins, smelting works with long wood piles, and a church. Lettering painted on commercial buildings...
    • Alma (Colo.)--1870-1880.; Mountains--Colorado--1870-1880.
    • [between 1875 and 1880]
    • Alma, Colo. placer mining

    • Miners work inside a gold placer mine pit with a hydraulic nozzle (monitor) and a crane, Summit County, Colorado.
    • Alma (Colo.)--1880-1890.; Gold mining--Colorado--Alma--1880-1890.; Hydraulic Mining--Colorado--Alma--1880-1890.; Mining--Colorado--Alma--1880-1890.
    • 1885
    • Placer mining Alma Colo

    • Gold miners pose at a hydraulic mine in Alma, Park County, Colorado; bluffs in the background have erosion and falling water. A jet of water issues from a "monitor" nozzle; a flume is in the foreground.
    • Alma (Colo.)--1880-1900.; Flumes--Colorado--Park County--1880-1900.; Gold mining--Colorado--Park County--1880-1900.; Hydraulic mining--Colorado--Park County--1880-1900.; Miners--Colorado--Park County--1880-1900.; Mining--Colorado--Park...
    • [between 1880 and 1900?]
    • Placer mining at Alma

    • Gold miners pose with a wheelbarrow at a hydraulic mine in Alma, Park County, Colorado; bluffs in the background have erosion and falling water. A jet of water issues from a "monitor" nozzle.
    • Alma (Colo.)--1880-1900.; Gold mining--Colorado--Alma--1880-1900.; Hydraulic mining--Colorado--Alma--1880-1900.; Miners--Colorado--Alma--1880-1900.; Mining--Colorado--Alma--1880-1900.
    • [between 1880 and 1900?]
    • Alma, Colo.

    • View west from above the icy Middle Fork of the South Platte, to the north side of Alma, (10,353 feet) in Park County, Colorado, includes large piles of tailings from placer and hydraulic dredge mining along the river. Town consists of scattered...
    • Alma (Colo.)--1920-1930.; Mining--Colorado--Alma--1920-1930.
    • [1929]
    • Alma, Colo.

    • View southwest from above the icy Middle Fork of the South Platte, to Alma, (10353 feet) Park County, Colorado, includes large piles of tailings from placer and hydraulic dredge mining along river. Town consists of scattered wood frame residences,...
    • Alma (Colo.)--1920-1930.; Mining--Colorado--Alma--1920-1930.
    • [1929]
    • Alma, Park Co.

    • View west of Alma, (10,353 feet) Park County, Colorado, includes large tailing dumps from placer and hydraulic dredge mining above the Middle Fork of the South Platte River; shows frame residences, commercial buildings on main street, and ruins of...
    • Alma (Colo.)--1920-1930.; Mining--Colorado--Alma--1920-1930.
    • [1929]
    • Arrastra Buckskin Gulch [i. e. Creek]

    • View of an arrastra on Buckskin Creek near Alma (Park County), Colorado.
    • Alma (Colo.)--1940-1950.; Buckskin Creek (Colo.)--1940-1950.; Grinding--Colorado--Alma--1940-1950.; Hydraulic mining--Colorado--Alma--1940-1950.; Mining--Colorado--Alma--1940-1950.
    • [1940]
    • Placer project Alma, Colo.

    • View of the path of a dredge near Alma (Park County), Colorado. The digging arm of a dredge is in the distance.
    • Alma (Colo.)--1940-1950.; Dredging--Colorado--Alma--1940-1950.; Hydraulic mining--Colorado--Alma--1940-1950.; Mining--Colorado--Alma--1940-1950.
    • [1940]
    • Alma Gold Mining Co.

    • Alma Gold Mining Company hydraulic placer dredge, Park County, Colorado shows tailings, settling pond and backhoe with Mosquito Range in background.
    • Alma Gold Mining Company (Colo.)--1930-1940.; Dredges--Colorado--Park County--1930-1940.; Gold dredging--Colorado--Park County--1930-1940.; Park County (Colo.)--1930-1940.; Hydraulic mining--Colorado--Park County--1930-1940.; Mining--Colorado--Park...
    • February 24, 1936
    • Placer mining Alma Placer Park Co, Colo

    • View of the Alma Placer, a hydraulic gold mine in Park County, Colorado; shows eroded embankments, a crane, and miners using monitors to aim jets of water.
    • Alma Placer (Colo.)--1880-1900.; Park County (Colo.); Hoisting machinery--Park County--1880-1900.; Hydraulic mining--Colorado--Park County--1880-1900.; Miners--Park County--1880-1900.; Mining--Colorado--Park County--1880-1900.
    • 1887
    • 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?]
    • 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?]
    • 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?]
    • WPCD drilling

    • 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.
    • 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?]
    • 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.
    • 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?]
    • WPCD mucking left 3/4

    • 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.
    • 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?]
    • WPCD mucking right 3/4

    • 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.
    • 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?]
    • WPCD mucking bucket spilling

    • 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.
    • 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?]
    • 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?]
    • WPCD setting jumbo - upper deck

    • 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.
    • 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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