Los Alamos National Lab (LANL)

Los Alamos, NM

Community ratings, technical specifications, photos, nearby jobs, satellite map, and per diem rates for Los Alamos National Lab (LANL).

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Reactor Data

Research Reactors

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Research and test reactors, critical assemblies and prototypes at this site, as listed in the IAEA Research Reactor Database: type, thermal power, first criticality, shutdown date, current status and what each is used for.
21 reactors: 20 decommissioned, 1 permanent shutdown.
Reactor Type Thermal Power First Criticality Shutdown Status Used For
LOPO Low Power Boiler Homog (l) 1 Wt 1944-05-09 Decommissioned
HYPO High Power Reactor Homog (l) 5.5 kWt 1944-12-01 Decommissioned nuclear data
Clementine Fast Reactor Fast, Hg Cooled 25 kWt 1946-11-01 Decommissioned nuclear data
Topsy Crit Fast 600 Wt 1948-10-01 Decommissioned
SUPO Super High Power Reactor Homog (l) 35 kWt 1951-03-01 Decommissioned nuclear data
Jezebel Crit Assembly 1 Wt 1954-01-01 Decommissioned nuclear data
Honeycomb Crit Assembly 1 Wt 1956-01-01 Decommissioned nuclear data
Hydro Crit Assembly 1 kWt 1956-01-01 Decommissioned
LAPRE I Homog (l) 2 MWt 1956-02-15 Decommissioned
OWR Omega West Reactor Tank 8 MWt 1956-06-29 Decommissioned isotope production, neutron scattering, neutron radiography, materials testing, activation analysis, nuclear data
Mars Crit Assembly 1 Wt 1958-01-01 Decommissioned nuclear data
LAPRE II Homog (l) 8 kWt 1959-02-01 Decommissioned
LAMPRE I Homog Pul 1 MWt 1961-02-01 Decommissioned materials testing
Fran Prompt Burst 1 Wt 1962-09-01 Decommissioned nuclear data
Parka Crit Assembly 1 Wt 1962-11-30 Decommissioned nuclear data
Supercomet Crit Assembly 500 Wt 1963-01-01 Decommissioned
UHTREX Ultra-High Temperature Experiment Gas 3 MWt 1969-02-01 Decommissioned
Big Ten Crit Fast 5 kWt 1971-04-01 Decommissioned nuclear data
Kinglet Homog (l) 2 MWt 1972-01-01 Decommissioned materials testing, nuclear data
PCA Plasma Core Assembly Crit Assembly 100 Wt 1974-01-01 1987-01-01 Decommissioned materials testing, nuclear data
SHEBA Homog (l) 2 kWt 1980-09-04 2004-12-31 Permanent shutdown materials testing, nuclear data
Source: IAEA Research Reactor Database (RRDB), as of 2026-10-13.

Fuel Cycle Facilities

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Fuel cycle plants at this site, as listed in the IAEA Nuclear Fuel Cycle Facilities Database: what each plant does, its scale and design capacity, the years it operated, its current status and who operates it.
3 facilities: 1 decommissioning, 1 decommissioned, 1 shutdown.
Facility Type Scale Design Capacity Operated Status Operator
DP West Plutonium Facility MOX fuel fabrication (Mox Powder, Pellet, Pin, FA) Commercial 0 t HM/year 1944–1978 Decommissioning Los Alamos National Laboratory
LANL TA-21 Fuel Fabrication (U Pellet, Pin, FA) Commercial 0 t HM/year 1950–1984 Decommissioned Los Alamos National Laboratory
Los Alamos Plutonium Facility Spent Fuel Reprocessing - aqueous route Laboratory 0 t HM/year Shutdown Los Alamos National Laboratory
Source: IAEA Nuclear Fuel Cycle Facilities Database (NFCFDB), as of 2026-10-13.

Working Here

Jobs at Los Alamos National Lab (LANL) 41 active

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Active job listings posted for this specific facility on the NukeWorker job board. Click a job title for details, or the header to see them all.

More Jobs in NM 47 active

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Active nuclear industry job listings in NM from the NukeWorker job board. Click a job title for full details, or click the header to search all jobs in this state.

Per Diem Rates FY 2027

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Per diem covers lodging and meals & incidental expenses (M&IE) for government and contractor travel near this facility. Rates are from GSA for FY 2027.
$113
Lodging/Night
$68
M&IE/Day
$181
Total/Day
Standard Rate, NM

Unemployment Benefits NM

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Maximum state unemployment insurance benefits for NM. Actual benefits depend on your earnings history and may be lower than the maximum. Data as of Jan 2026.
$511
Max Weekly
26
Max Weeks
$13,286
Max Total
7-day waiting period before benefits begin

Photos

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Photos of this facility from the NukeWorker photo gallery. Click the header or any photo to browse the full album.

Facility Map

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Interactive satellite map showing the facility's geographic location. Marker color indicates current status: green for online, red for offline, orange for reduced power. Click the header to open in Google Maps satellite view.

35.8873, -106.322

Location & Contact

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Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
Address:
Los Alamos, NM 87544, USA
Get Directions

NukeWorker Member Ratings 14 votes

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Community ratings from NukeWorker members. Vote to share your experience working at this facility. Score uses a Bayesian average that accounts for vote count — facilities with few votes are pulled toward the fleet average, so rankings reflect confidence, not just raw percentages.
Above Average 6 (42%)
Average 5 (35%)
Below Average 3 (21%)
Score
54.8
Rank
#33 of 97
Mid Quartile

Plant Facts

About This Site

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Written by NukeWorker from public records: facts that do not change. Operator, status and capacity come from the live data elsewhere on this page. Sources: Wikipedia: Los Alamos National Laboratory.

Los Alamos National Laboratory is a U.S. government research laboratory at Los Alamos, New Mexico, a short distance northwest of Santa Fe.

Read more

The laboratory was established in 1943 as Project Y, a secret Manhattan Project site for designing and assembling nuclear weapons. J. Robert Oppenheimer was its first director. The Trinity test took place near Alamogordo on July 16, 1945, and the Little Boy and Fat Man weapons, assembled at Los Alamos, were used in August 1945. It was renamed the Los Alamos Scientific Laboratory on January 1, 1947, and became a national laboratory in name in 1981.