The high-power unit had 300 grams of Pu-238 in 1965. Given its 87.7 years half-life, only 187g of Pu-238 remaining. It's very hard to do much damage with this amount of radioactive material.

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onion2k 2 hours ago | parent [-]

It decays to uranium-234 though, which still isn't exactly nice. It'll be a long time before it's a block of inert lead.

	▲	krasin 2 hours ago \| parent [-]
		U-234 is ~3000x less radioactive than Pu-238, so having ~120g of U-234 is negligible. I really fail to see a problem with these tiny amounts of non-brittle material embedded into a solid case. It's still very dangerous, but it's locally dangerous (meters away), not at the scale of whole countries.