Latest / The History of Belgium: A Small Country with a Giant Colonial Legacy — Fexingo History / The 1930s Belgian Congo Uranium Rush
Transcript
- Lucas: So we've covered a lot of the rubber and ivory and cotton extraction in the Congo, but there's one resource that Belgium stumbled into that ended up having global consequences far beyond what anyone imagined at the time. Luna: You're talking about uranium, aren't you? Lucas: Exactly. And specifically the Shinkolobwe mine in the Katanga province. Now, Shinkolobwe wasn't originally dug for uranium at all — it was a radium mine. Radium was incredibly valuable in the 1920s for medical purposes and luminous paint. The Belgian firm Union Minière du Haut-Katanga owned the concession, and they started extracting radium from the ore in 1922. Lucas: But the ore they were pulling out had this heavy, dense byproduct — uranium oxide. At the time, uranium was basically a waste product. It had some limited use as a ceramic glaze, but nowhere near the value of radium. So they just stockpiled it. Huge piles of uranium ore sat around the mine site for years. Luna: So when did they realize what they actually had? Lucas: That's the thing — they didn't, not really, until the late 1930s. In 1938, Otto Hahn and Fritz Strassmann in Berlin discovered nuclear fission, and suddenly uranium was the most strategically important mineral on earth. But here's the twist: the Shinkolobwe ore was phenomenally rich. Most uranium deposits have a concentration of maybe 0.1% or 0.2% uranium oxide. Shinkolobwe averaged over 65% in some veins. It was the highest-grade uranium deposit ever found. Luna: Wait, 65%? That's not even comparable. Lucas: No, it's in a league of its own. And that meant whoever controlled Shinkolobwe effectively controlled the world's supply of weapons-grade uranium. Enter Edgar Sengier. He was the Belgian director of Union Minière, a very sharp and discreet man. By 1939, with war looming, Sengier realized the strategic value of what they had. He arranged for half of the existing uranium stockpile — about 1,200 tons — to be secretly shipped to New York and stored in a warehouse on Staten Island. Lucas: This was before the Manhattan Project even existed. Sengier acted on his own initiative, without any formal request from the US government. He just had a hunch that this stuff would be important, and he wanted to keep it out of Nazi hands. The ore sat in that warehouse for nearly three years. Luna: So the US didn't even know they had it? Lucas: Not at first. It wasn't until 1942, when the Manhattan Project was desperately looking for high-grade uranium, that a US Army colonel named Kenneth Nichols was sent to find some. He contacted Sengier, and Sengier said, 'Well, I have 1,200 tons sitting in New York.' Nichols later said it was the single most important factor in the success of the project. Without that ore, the atomic bomb might have been delayed by years. Luna: That's an incredible story. But what about the conditions at the mine itself? Because we know what Belgian colonial mining was like. Lucas: Right. And we should talk about that. The Shinkolobwe mine was worked largely by forced labor under the colonial regime. The Luba people and other local communities were conscripted through the Force Publique and the local chiefs under the system of 'prestations' — mandatory unpaid labor. Men were taken from their villages to work underground in dangerous conditions, with little to no protective equipment. Lucas: The ore was radioactive, of course, but nobody understood the health risks at the time. Miners breathed in radon gas and dust. Many died of lung diseases, but records are sparse. The colonial authorities didn't exactly track African health outcomes. Mine accidents were common — cave-ins, explosions from blasting. And if workers tried to flee, the Force Publique would hunt them down. Luna: So the same brutal system that extracted rubber and ivory was now extracting uranium for the atomic age. Lucas: Exactly. And the irony is that the mine's output was so crucial to the Allies winning World War II, but the people who actually dug the ore saw none of the benefits. Not even recognition. The mine itself was closed in the 1940s after the war, but then reopened in the 1950s as the Cold War escalated. Belgium kept tight control over the uranium trade, negotiating directly with the US and Britain. Luna: What happened to the mine after Congolese independence? Lucas: After independence in 1960, the mine was nationalized under Mobutu, but production had already declined. The high-grade veins were largely exhausted. But there was one more strange chapter: in the 1990s, it was discovered that the US had secretly shipped some Shinkolobwe ore to Israel in the 1960s, allegedly as part of a covert deal. So the mine's legacy extends into the nuclear programs of multiple countries. Lucas: Before we move on, I want to mention something about listener support. You know, episodes like this one — digging into these less-known corners of colonial history — they take a lot of research and time. And we keep the show ad-free, which means we rely on people who find value in these conversations to help us keep going. If you've been stepping into history with us episode by episode, and you'd like to support the show, you can do that at buy me a coffee dot com slash fexingo. It's a simple way to chip in. And it really does make a difference. Luna: Yeah, I think a lot of listeners appreciate that we can go deep without commercial breaks. So if you enjoy the show, consider it. Lucas: Back to Shinkolobwe. One more important figure: Sengier himself. After the war, he was awarded the Medal of Merit by the US government, but he remained a controversial figure in Belgium. Some saw him as a patriot who secured a vital resource for the Allies. Others criticized him for keeping the mine's conditions secret and for the colonial exploitation that made the uranium possible. Luna: It's a complicated legacy, for sure. Lucas: And it's a story that connects Belgium's colonial past directly to the nuclear age. The bombs dropped on Hiroshima and Nagasaki contained uranium that almost certainly came from Shinkolobwe. So that small mine in Katanga helped shape the 20th century in a way that Leopold II never could have imagined. Luna: It's a sobering thought — that the atomic age was built on the backs of Congolese laborers. Lucas: Absolutely. And it's a reminder that history's biggest events often have roots in places we don't expect. Next time, we'll look at another aspect of Belgium's colonial economy: the copper belt, and how Union Minière became a corporate empire.