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    • Workers close covers on a bulk railroad car full of moly.

    • Workers prepare a railroad car for transporting molybdenum at the Henderson Mine and mill in Empire, Clear Creek County, Colorado.
    • Molybdenum--Colorado--Empire--1980-1990.; Empire (Colo.)--1980-1990.; Henderson Mine (Clear Creek County, Colo.)--1980-1990.; Interiors--Colorado--Empire--1980-1990.; Mining--Colorado--Empire--1980-1990.; Railroad freight...
    • September 6, 1980
    • ASEA locomotives, built in Sweden, power ore trains between the Henderson Mine and Mill

    • An engineer sits in ASEA electric locomotive number 3502, it pulls ore cars on the rail line between the Henderson Mine and Mill (Grand County) Colorado.
    • ASEA (Firm)--Products--1970-1980.; Henderson Mine (Clear Creek County, Colo.)--Equipment & supplies--1970-1980.; Grand County (Colo.)--1970-1980.; Mine railroads--Colorado--Grand County--1970-1980.; Mining--Colorado--Grand County--1970-1980.;...
    • [between 1976 and 1980]
    • Double tracks allow quick return of empty ore trains over the 14.2 mile trip from the mill to the...

    • An engineer sits in ASEA electric locomotive number 3508 as it pulls empty mine cars between the Henderson Mine and Mill in Grand County, Colorado.
    • ASEA (Firm)--Products--1970-1980.; Henderson Mine (Clear Creek County, Colo.)--Equipment & supplies--1970-1980.; Grand County (Colo.)--1970-1980.; Mine railroads--Colorado--Grand County--1970-1980.; Mining--Colorado--Grand County--1970-1980.;...
    • [between 1976 and 1980]
    • Reclaimed and seeded tailings offset the Urad Mill

    • View shows the reclamation efforts, using seeded tailings, at the Urad mine, Clear Creek County, Colorado. The mill is in the distance.
    • Clear Creek County (Colo.)--1970-1980.; Mills--Colorado--Clear Creek County--1960-1980.; Mining--Colorado--Clear Creek County--1960-1980.; Reclamation of land--Colorado--Clear Creek County--1960-1980.
    • [between 1963 and 1974]
    • The open pit at Climax mine near Leadville, Colorado.

    • View of an open pit Molybdenum mine near Leadville, Lake County, Colorado; mining machinery includes a scoop-crane, a dump truck, a tracklayer tractor, and a truck.
    • Climax Mine (Lake County, Colo.)--1940-1970.; Leadville (Colo.)--1940-1970.; Dump trucks--Colorado--Leadville--1940-1970.; Hoisting machinery--Colorado--Leadville--1940-1970.; Mining--Colorado--Leadville--1940-1970.
    • [between 1940 and 1970?]
    • Dr. Larry Brown, kneeling, explains the growth processes of experimental grass seed mixture at the...

    • Dr. Larry Brown demonstrates to his co-workers the growth processes of an experimental mixture of grass seed using crushed rock, wood chips, and dried sludge during the reclamation of the Urad mine site, Clear Creek County, Colorado.
    • Henderson Mine (Clear Creek County, Colo.)--People--1970-1980.; Clear Creek (Clear Creek County, Colo.)--1970-1980.; Mining--Colorado--Clear Creek County--1970-1980.; Reclamation of land--Colorado--Clear Creek County--1970-1980.; Brown, Larry.
    • [between 1975 and 1980]
    • Flotation cells are monitored during skimming operation for molybdenum recovery.

    • A worker monitors a row of "Denver Sub-A" flotation machines at the Henderson Mine and mill in Empire, Clear Creek County, Colorado.
    • Molybdenum--Colorado--Empire--1980-1990.; Empire (Colo.)--1980-1990.; Henderson Mine (Clear Creek County, Colo.)--1980-1990.; Interiors--Colorado--Empire--1980-1990.; Mining--Colorado--Empire--1980-1990.
    • September 6, 1980
    • The Urad reclamation starts to take shape

    • View of the reclamation area, in its early stages, at the Urad mine site, Clear Creek County, Colorado. The mine, dam, and mill are in the distance.
    • Clear Creek County (Colo.)--1970-1980.; Urad Mine (Clear Creek County, Colo.)--1970-1980.; Mining--Colorado--Clear Creek County--1970-1980.; Reclamation of land--Colorado--Clear Creek County--1970-1980.
    • [between 1970 and 1980]
    • Flotation cells skim molybdenum

    • A worker monitors a row of "Denver Sub-A" flotation machines at the Henderson Mine and mill in Empire, Clear Creek County, Colorado.
    • Molybdenum--Colorado--Empire--1980-1990.; Empire (Colo.)--1980-1990.; Henderson Mine (Clear Creek County, Colo.)--1980-1990.; Interiors--Colorado--Empire--1980-1990.; Mills--Colorado--Empire--1980-1990.; Mining--Colorado--Empire--1980-1990.
    • September 6, 1980
    • Henderson's modern mill control room monitors every vital function in the milling process.

    • Workers in the control room at the Henderson Mine and mill in Empire, Clear Creek County, Colorado shows: telephones, desk and control panels.
    • Empire (Colo.)--1980-1990.; Henderson Mine (Clear Creek County, Colo.)--1980-1990.; Control rooms--Colorado--Empire--1980-1990.; Interiors--Colorado--Empire--1980-1990.; Mining--Colorado--Empire--1980-1990.
    • September 6, 1980
    • Dr. Larry Brown, kneeling, explains the growth processes of experimental grass seed mixture at the...

    • Dr. Larry Brown demonstrates to his co-workers the growth processes of an experimental mixture of grass seed using crushed rock, wood chips, and dried sludge during the reclamation of the Urad mine site, Clear Creek County, Colorado.
    • Henderson Mine (Clear Creek County, Colo.)--People--1970-1980.; Clear Creek County (Colo.)--1970-1980.; Mining--Colorado--Clear Creek County--1970-1980.; Reclamation of land--Colorado--Clear Creek County--1970-1980.; Brown, Larry.
    • [between 1975 and 1980]
    • These huge discs are filters used in the milling circuit for molybdenum at the Henderson mill.

    • A worker tends a 6-disc filter machine at the Henderson Mine and mill in Empire, Clear Creek County, Colorado.
    • Molybdenum--Colorado--Empire--1980-1990.; Empire (Colo.)--1980-1990.; Henderson Mine (Clear Creek County, Colo.)--1980-1990.; Interiors--Colorado--Empire--1980-1990.; Mills--Colorado--Empire--1980-1990.; Mining--Colorado--Empire--1980-1990.
    • September 6, 1980
    • An aerial view of the restabilization of the Urad reclamation

    • Two dump trucks are parked in the reclamation area at the Urad mine site, Clear Creek County, Colorado. Crushed rock from the Henderson mine was hauled here and used as tailings cover and substrate for vegetation. The mill is in the background.
    • Clear Creek County (Colo.)--1970-1980.; Urad Mine (Clear Creek County, Colo.)--1970-1980.; Mining--Colorado--Clear Creek County--1970-1980.; Reclamation of land--Colorado--Clear Creek County--1970-1980.
    • [between 1970 and 1980]
    • The primary crusher pit begins to take shape.

    • Construction site of the primary crusher pit at the Henderson Mine and mill in Empire, Clear Creek County, Colorado. Shows: trucks, bulldozer, and a round foundation.
    • Empire (Colo.)--1980-1990.; Henderson Mine (Clear Creek County, Colo.)--1980-1990.; Digging--Colorado--Empire--1980-1990.; Excavation--Colorado--Empire--1980-1990.; Mining--Colorado--Empire--1980-1990.
    • September 6, 1980
    • Two regrind mills are set in place at this stage of the Henderson Mill

    • Construction inside the Henderson Mine and mill, Empire, Clear Creek County, Colorado. Shows regrind mills with support structures.
    • Empire (Colo.)--1980-1990.; Henderson Mine (Clear Creek County, Colo.)--1980-1990.; Construction--Colorado--Empire--1980-1990.; Interiors--Colorado--Empire--1980-1990.; Mills--Colorado--Empire--1980-1990.; Mining--Colorado--Empire--1980-1990.
    • September 6, 1980
    • A pit is carved out to house the primary crusher at the Henderson Mill.

    • Construction site of the primary crusher pit at the Henderson Mine and mill, Empire, Clear Creek County, Colorado. Shows: cars, trucks, and a round foundation.
    • Empire (Colo.)--1980-1990.; Henderson Mine (Clear Creek County, Colo.)--1980-1990.; Excavation--Colorado--Empire--1980-1990.; Mining--Colorado--Empire--1980-1990.
    • September 6, 1980
    • Crushed rock is dumped and leveled over Urad Mine tailings to provide a firm base for reclamation

    • View of a bulldozer leveling the reclamation area of the Urad mine site, Clear Creek County, Colorado. The mill and tailings pond are in the background.
    • Clear Creek County (Colo.)--1970-1980.; Urad Mine (Clear Creek County, Colo.)--1970-1980.; Bulldozers--Colorado--Clear Creek County--1970-1980.; Mining--Colorado--Clear Creek County--1970-1980.; Reclamation of land--Colorado--Clear Creek...
    • [between 1970 and 1980]
    • The Henderson Mill, shown in early stages of construction.

    • Construction inside the Henderson Mine and mill in Empire, Clear Creek County, Colorado. Shows cement foundation and supports.
    • Empire (Colo.)--1980-1990.; Henderson Mine (Clear Creek County, Colo.)--1980-1990.; Construction--Colorado--Empire--1980-1990.; Interiors--Colorado--Empire--1980-1990.; Mills--Colorado--Empire--1980-1990.; Mining--Colorado--Empire--1980-1990.
    • September 6, 1980
    • Urad Mill site shown at full operation

    • View of the Urad mill site, Clear Creek County, Colorado, shows mine and mill buildings and a large settling pond.
    • Tailings dams--Colorado--Clear Creek County--1960-1980.; Clear Creek County (Colo.)--1960-1980.; Mills--Colorado--Clear Creek County--1960-1980.; Mining--Colorado--Clear Creek County--1960-1980.
    • [between 1963 and 1974]
    • Headquarters for AMAX Western Operations, Golden, Colorado

    • View across the landscaped parking lot of the AMAX Western Operations headquarters, Golden, Jefferson County, Colorado, shows the two- story brick building with intersecting shingle hipped roofs. Parked automobiles include: Camaro, Mercedes, Pinto,...
    • AMAX, Inc.--1980-1990.; Golden (Colo.)--1980-1990.; Mining--Colorado--Golden--1980-1990.
    • [1980]
    • Crushed rock is dumped and leveled over Urad Mine tailings to provide a firm base for reclamation

    • A bulldozer stands by as a dump truck dumps crushed rock used for leveling the reclamation area of the Urad mine site, Clear Creek County, Colorado.
    • Clear Creek County (Colo.)--1970-1980.; Urad Mine (Clear Creek County, Colo.)--1970-1980.; Bulldozers--Colorado--Clear Creek County--1970-1980.; Dump trucks--Colorado--Clear Creek County--1970-1980.; Mining--Colorado--Clear Creek...
    • [between 1970 and 1980]

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