This is the model I had at about age 11 in the early 60s. The biggest issue was tracking down a source of dry ice and safely handling it.
II worked at a nuclear power plant as a health physicist and chemist in the mid 70s. Kind of a scaled up version of the kit ;-)


When I first saw this toot in the local feed here, I thought it was some kind of toy simulation, but now that I read some of the verbiage on the box, I see that it's the real deal!

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