[Talk-ca] circular roads north west of Medicine Hat

[James Ewen]

On Tue, Jul 7, 2009 at 11:15 PM, Simon Wood<simon at mungewell.org> wrote:

> What are these?
> http://www.openstreetmap.org/?lat=50.534&lon=-110.879&zoom=10&layers=B000FTF
>
> They appear in Google's photos, but not on the mapping layer.

As Jason said, bomb test range markings... used in the late 60's and
early 70's for nuclear explosion simulations. Here are some links.

http://www.globalsecurity.org/wmd/ops/dial-pack.htm
http://www.globalsecurity.org/wmd/ops/prairie-flat.htm

James
VE6SRV