this post was submitted on 04 Aug 2023
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I inherited my grandfather's WWII compass, and had it sitting around for a long time on a shelf. I recently got a Geiger counter, and find that it's radioactive. Around 10 microsieverts/hr. Apparently they used radium paint to make them glow in the dark. I can't just throw it away, but I don't want it potentially causing a danger to others in the room. Is there some sort of lead lined box I can put it in, or some kind of prevention I can do? Is there anyone experienced with this sort of thing that can offer some advice?

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[โ€“] ArgentRaven@lemmy.world 2 points 1 year ago (1 children)

It's in really good condition, and checking the shelf where it's been sitting for a decade, there no residual radiation. So I have to assume it won't flake off easily.

A perspex box might be a good idea, but for now it's sitting on a far away garage shelf with a label. I'd prefer to keep it even if it's an outdated method compared to my phone, as it was a gift from my grandfather as he had it from his deployment in WWII in the 45th infantry. But now we're all aware of what it might do, so we'll definitely limit exposure time if we do show it off. It's good to know that it's still a fairly small amount of danger, comparatively.

Thank you!

[โ€“] Emperor@feddit.uk 2 points 1 year ago

Sounds like you should be fine. Most radioactive particles don't travel far or penetrate very far (why the main danger is from ingestion) so if you aren't carrying it around and it's not in a high traffic area of the house then you should be fine. If you want to be sure, you can pop it into ziplock bag.