English: 500 tons of TNT are detonated at Suffield Experimental Station, Alberta on July 17, 1964 as part of Operation Snowball. Black smoke in the background is from burning crude oil to produce a better background for contrast.
Date
Taken on 17 July 1964
Source
History of Shock Waves, Explosions and Impact: A Chronological and Biographical Reference, Peter O. K. Krehl p 992
Author
Defence Research Board currently Defence Research and Development Canada
Licensing
Public domainPublic domainfalsefalse
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