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Photograph of B Reactor
Photograph by Billatq, CC BY-SA 4.0. Via Wikimedia Commons.

Hanford B Reactor

A National Historic Landmark. Built in 1944. Listed on the National Register of Historic Places in 1992.

From the record

“The B Reactor at the Hanford Site, near Richland, Washington, was the first large-scale nuclear reactor ever built, at 250 MW. This reactor was of vital importance to the Manhattan Project, the United States nuclear weapons development program during World War II.”

Wikipedia article B Reactor, CC BY-SA 4.0.

One of 7 National Register listings published here for Benton County · listed in 1992 · category: Structure · built in 1944 · a National Historic Landmark.

Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

The listing

  • National Historic Landmark. The highest federal designation, held by about 2,600 places in the country against roughly 100,000 Register listings.
  • What is counted as historic. The nomination lists 1 structure as contributing to the listing.
  • Still standing. The Park Service records this property as extant.
  • Address. Near jct. of WA 24 and WA 240, Hanford Site, Richland, 98944
  • When was it listed? April 1992
  • Category. structure
  • Census division. Hanford Site
  • When was it built? 1944
  • National Register reference number. 92000245 - the number the National Park Service assigned this property when it was listed, and the key its nomination file is catalogued under at the National Archives.

Fires near this property

21 since 1992

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 21 fires within 5 miles of Hanford B Reactor between 1992 and 2019, burning about 6,461 acres in total. 7 started naturally. None was recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.

Reported cause Fires
Missing data/not specified/undetermined7
Natural7
Equipment and vehicle use3
Debris and open burning3
Recreation and ceremony1

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

DateCause SizeReported by Name on the report
29 September 1993Missing data/not specified/undetermined111 acresHanford Reach National MonumentPOWERLINE2
24 August 2000Natural132 acresHanford Reach National MonumentVERNTAFLAT
24 August 1999Naturalunder an acreHanford Reach National MonumentNEVBNATOUT
20 August 1992Debris and open burning1.0 acresHanford Reach National MonumentHWY 24
14 August 2002Missing data/not specified/undetermined35 acresHanford Reach National MonumentVERNITA
1 August 2019Recreation and ceremonyunder an acreHanford Reach National MonumentGRAVEL PIT
5 July 2005Missing data/not specified/undetermined4,917 acresHanford Reach National MonumentWEATHER STATION
31 July 2001Debris and open burning26 acresHanford Reach National MonumentRRLOOP

Every fire recorded in Benton County

Mines and quarries near this property

1 within 5 miles

Regional context, not property-specific evidence. The federal mineral resources record lists 1 working within 5 miles of Hanford B Reactor: 1 past producer. None of them still produces. What was taken out: Stone, Crushed/Broken. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Where SiteCommodity StatusRecorded
Borrow PitStone, Crushed/BrokenPast Producer

Every working recorded in Benton County

Storms near this property

14 since 2001

Regional context, not property-specific evidence. The National Weather Service names Richland, the town this property stands in, in 14 storm reports between 2001 and 2020: 9 thunderstorm wind, 1 hail, 1 funnel cloud, 1 dust devil. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.

WhenEvent Place namedHarm What the report says
June 2005Dust DevilRichland$1,000no account filed
March 2020Tornado (EF0)North Richland-Multiple public videos of a weak landspout tornado on the north side of Richland, WA in an open area. No damage reported.
June 2017Flash FloodRichland-Numerous intersections were flooded in Kennewick and Richland Washington, including Canal Drive and Volland Street, Gage Boulevard and Quinault Street. The Columbia Park Trail was closed from Hillwood to Rockwood due to flooding. Vista Field in Kennewick had 1.05 inches in one hour, with spotter reports of 0.64 inches to 0.94 inches in Richland and 0.70 inches to 1.01 inches in Kennewick.
September 2013Thunderstorm WindNorth Richland-Hanford Mesonet measured a 68 mph wind gust.
June 2008Thunderstorm WindRichland-Hanford Army Loop Road station reported 61 mph.
July 2001Thunderstorm WindRichland-A wind gust of 60 mph was measured at one of the observing sites on the Hanford Reservation.
August 2013Thunderstorm WindNorth Richland-no account filed
August 2013Thunderstorm WindNorth Richland-no account filed
August 2013Thunderstorm WindWest Richland-no account filed
May 2006Thunderstorm WindRichland-no account filed
May 2006Thunderstorm WindRichland-no account filed
April 2005Funnel CloudRichland-no account filed
June 2005Thunderstorm WindRichland-no account filed
June 2001HailRichland-no account filed

Every storm recorded in Benton County

Map coverage status

No historic map-sheet match is published for this property yet. That does not mean no map exists. This record needs a coordinate-quality review before it can be joined to a sheet boundary. Browse the county's mapped places while that work is pending.

Sources for this property

National Archives recordThe nomination case file for reference 92000245 in Record Group 79.
Wikipedia articleCommunity-written account of this property, licensed CC BY-SA.
Benton CountyAll 7 listed properties in this county.

Provenance

  • Listing record. National Park Service National Register of Historic Places, listed-properties dataset, current to 2026-05-22.
  • Map join. Address geocoded through the United States Census geocoder, then tested against the published boundary of every sheet in the USGS Historical Topographic Map Collection.
  • How this page is made. Listing fields come from federal records; map-sheet coverage is a labelled coordinate-to-boundary calculation, not a source-field claim.
  • Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
  • Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.
  • Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.