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Ryan Manzuk
Geologist and postdoctoral research fellow at Princeton University's Program on Science and Global Security studying uranium mining safeguards and remote sensing.
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Oct 2, 2026
Hidden Uranium in DRC Cobalt Exports to China: Is It a Problem?
22:21

Cobus van StadenHOST
So in, in, in comparison to those, to, to those kind of like chemical spill kind of environmental problems that, that, that people are used to thinking about, how do you contextualize this ongoing kind of like flow of uranium, you know, uh, that, that, that's going on in, in, you know, like how, how should, how should non-experts be making sense of this, um, you know, in terms of like the level of alarm that we should be feeling?
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22:49Ryan ManzukGUEST
I totally agree and kind of like your synopsis that traceability is really what we're talking about here.
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22:55Ryan ManzukGUEST
Um, and so when we're talking about actually measures to put in place to better trace this, um, this problem, right now the, the system is waving a Geiger counter or some type of other, um, some type of other device over shipments as they're crossing borders.
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23:12Ryan ManzukGUEST
Um, and we're doing work right now to understand, okay, is that good enough? Can you actually detect this level of uranium with a Geiger counter? Um, and then there's mixed results there, and you can imagine, you know, user error or, um, packing shipments in a way such that they're, um, a little less traceable.
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23:27Ryan ManzukGUEST
And so what we, we think is probably the best measure is actually sending s- little aliquots or little samples of everything that you're going out.
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23:36Ryan ManzukGUEST
After you, you produce this cobalt powder that's going to be shipped, homogenize it and take a little bit of it and send it off to a lab and then just say, "Okay, that's the representative sample that is for this shipment, and it comes back with this level of, you know, cobalt, iron and, and of course, uranium." And that's supposed to be, that's actually supposed to be done, um, but we found that it was just inconsistent or in laboratory reports Often the uranium column was blank.
9 MINS LATER
