Manitoba Historical Society
     Keeping history alive for over 141 years

 

Pay & Donate in the MHS Online Shop

Endangered Top 10
Endangered
Top 10
2020

Prairie History No. 2
Prairie
History

No. 2

Manitoba Photographers List
Manitoba
Photographers
List

Free Press Manitoba 150
Free Press
Manitoba
150

MHS YouTube Channel
MHS
YouTube
Channel

Manitoba Brick & Blocks
Manitoba
Bricks
& Blocks

Jens Munk at Churchill
Field Trip:
Churchill
2020

War Memorials in Manitoba
War
Memorials
in Manitoba

Fundraising Dinner 2020
MHS
Fundraising
Dinner
2020

This Old Elevator
This Old
Elevator

Abandoned Manitoba
Abandoned
Manitoba

Memorable Manitobans
Memorable
Manitobans

Historic Sites of Manitoba
Historic Sites
of Manitoba

Historic Sites of Manitoba: Fallout Reporting Post GH3 (Northern Manitoba)

Link to:
Photos & Coordinates | Sources

In the spring of 1962, at the height of the Cold War, the Canadian government began building a nation-wide Nuclear Detonation and Fallout Reporting System (NDFRS) to measure the pattern and intensity of radioactive fallout in the event of a nuclear explosion. A network of 2,000 small Fallout Reporting Posts, 200 of them distributed throughout Manitoba, would be constructed to take local fallout measurements. In Manitoba, results from each Fallout Reporting Post would be transmitted to Filter Centres located at the Pine Falls Armoury and Brandon Armoury where teams of women in the Canadian Women’s Army Corps would summarize and pass on the data to one of three Nuclear Detonation Reporting Posts (NUDET), located at RCAF Portage la Prairie and RCAF Gimli, and in the Great Falls Generating System. NUDETs would use the data to determine the location of the explosion and its fallout yield, and transmit this information to the Regional Emergency Government Headquarters (REGHQ) at Camp Shilo.

At least 100 of the 200 Fallout Reporting Posts in the Manitoba complement were constructed by mid-1962. Some were situated in railway stations, buildings belonging to federal and provincial agencies, and RCMP detachment offices. Others in more remote locations were built underground to protect the operators from radiation. This post, designated as GH3, consisted of a 12-foot vertical metal tunnel that led down to a second metal cylinder, about 15 feet long and seven feet in diameter, that housed the radiation monitoring equipment, storage shelves for food, water, and other supplies, and beds for two people. The post, located beside Devil’s Lake along Highway 6 south of Grand Rapids, remained in relatively good condition at the time of a late-2015 site visit. The vertical access tunnel is normally locked and inaccessible.

Photos & Coordinates

Entrance to Fallout Reporting Post GH3

Entrance to Fallout Reporting Post GH3 (October 2015)
Source: Scott Falkingham

Entrance to Fallout Reporting Post GH3

Entrance to Fallout Reporting Post GH3 (October 2015)
Source: Scott Falkingham

Interior of Fallout Reporting Post GH3

Interior of Fallout Reporting Post GH3 (October 2015)
Source: Scott Falkingham

Site Coordinates (lat/long): N52.40471, W98.91156
denoted by symbol on the map above

See also:

Historic Sites of Manitoba: Fallout Reporting Post JG3 (Northern Manitoba)

Sources:

“Exercise planned to confirm fallout patterns,” Brandon Sun, 11 April 1962, page 3.

“100 fallout stations set in province,” Winnipeg Tribune, 23 July 1962, page 25.

“Fallout post still ‘voiceless’,” Winnipeg Free Press, 28 August 1962, page 3.

Simple shelters? Monitoring radioactive fallout across Canada, 1959-63” by Andrew Burtch, Canadian Military History, Volume 20, Number 4, Autumn 2011, pages 49-62.

This page was prepared by Scott Falkingham, Jim Burns, and Gordon Goldsborough.

Page revised: 29 September 2019

Historic Sites of Manitoba

This is a collection of historic sites in Manitoba compiled by the Manitoba Historical Society.

Browse lists of:
Museums/Archives | Buildings | Monuments | Cemeteries | Locations | Other

Please note that inclusion in this collection does not mean that a particular site has special status or protection. Some sites are on private property and permission must be secured from the owner prior to visiting.

Site information is provided by the Manitoba Historical Society as a free public service only for non-commercial purposes.


Search Tips | Suggest a Site | FAQ | Acknowledgements

Send inquiries to the MHS Webmaster.

Back to top of page

   


To report an error on the above page, please contact the MHS Webmaster.

Home  |  Terms & Conditions  |  FAQ  |  Contact Us  |  Privacy Policy  |  Donations Policy

© 1998-2020 Manitoba Historical Society. All rights reserved.