The role of Congo in creating the bombs dropped on Hiroshima and Nagasaki?

The forgotten mine that built the atomic bomb : Shinkolobwe Mine

The mine's name was taken from the long-gone nearby village of Shinkolobwe, which is the indigenous thorny fruit in the Lingala language. It is also slang for "a man who is easygoing on the surface but who becomes angry when provoked".  

Shinkolobwe, or Kasolo, or Chinkolobew, or Shainkolobwe, was a radium and uranium mine in the Haut-Katanga Province of the Democratic Republic of the Congo (DRC), located 20 km west of Likasi (formerly Jadotville), 20 km south of Kambove, and about 145 km northwest of Lubumbashi.

The mine produced the most economical uranium ore in the world and was used for the Manhattan Project and subsequent nuclear weapons produced by the United States in the 1940s and 50s. Before World War II, uranium extracted here was originally taken to Belgium to be processed; this supply was captured by the Wehrmacht in 1940 and subsequently used for the unsuccessful German nuclear program.

The mineral deposits at Shinkolobwe were discovered in 1915 by English geologist Robert Rich Sharp (1881–1960).

The first mine was opened in the Belgian Congo in 1921. Uranium-bearing ore was initially exported to Olen, Belgium for the extraction of radium, and uranium. Only the richest ore was sent to Olen, with the remainder held in reserve. Open-cut mining was suspended at level 57 m and at the level 79 m underground in 1936, though exploration had commenced at level 114 m, and water pumps installed at level 150 m.

Both Britain and France expressed interest in the Belgium inventory of uranium ore in 1939. Nothing further happened though after the Nazis occupied Belgium in 1940, gaining control of the ore still "on the docks".

Open-cut operations restarted in 1944, and underground in 1945. This required pumping the mine dry since the water table was at about 45 m. The 255 m level was reached in 1955.

The United States used Shinkolobwe's uranium resources to supply the Manhattan Project to construct the atomic bomb in World War II. Edgar Sengier, then director of Union Minière du Haut Katanga, had stockpiled 1,200 tonnes of uranium ore in a warehouse on Staten Island, New York. This ore and an additional 3,000 tonnes of ore stored above-ground at the mine was purchased by Colonel Ken Nichols for use in the project. 

In 1940, 1,200 tons of stockpiled uranium ore were shipped to the US by Sengier's African Metals Corp., a commercial arm of Union Minière. Then, after the September 1942 agreement with Nichols, an average of 400 tons of uranium oxide were shipped to the US each month. Initially, the port of Lobito was used to ship the ore, but later Matadi was used to improve security. Only two shipments were lost at sea. The aerodromes in Elizabethville and Leopoldville were also expanded. Additionally, the mine was reopened with the help of the United States Army Corps of Engineers, which involved draining the water and retooling the facility. Finally, the Office of Strategic Services were enlisted to deal with the threat of smuggling to Germany.

American interest in the Shinkolobwe mine for the purpose of developing of nuclear weapons led to the implementation of extensive security measures. Shinkolobwe's location was removed from maps and journalists were denied access to the mine and official information.

Cold War era

Just as a lack of uranium ore impeded the German and Japanese attempts to make an atomic bomb, the Americans wanted to maintain their monopoly against the Soviets.

Security measures were slightly more relaxed in the wake of World War II, but in the 1950s, most journalists were able to gather only scraps of information on the mine's operation, from unofficial sources. In 1950, a uranium processing plant was said to be under construction near the mine. At the time, Shinkolobwe was believed to contain roughly half of the world's known reserves of uranium.

In 1947, the U.S. received 1,440 tons of uranium concentrates from the Belgian Congo, 2,792 in 1951, and 1,600 in 1953. A processing plant was added nearby, and for increased security, a garrison was also established, with a supporting NATO military base in Kamina. Jadotville became a security checkpoint for foreigners. However, by the time of Congo independence, Union Minière had sealed the mine with concrete.

Despite the US presence in the 1940s and 1950s, in 1960, due to increase opening of Uranium mines from the American Homeland and the independence of the Congo, the United States left the mine. Hence, the sealing of the mine by Union Minière.

Israeli yellowcake

Israeli in 1968 obtained yellowcake (processed uranium ore) to support the Israeli nuclear weapons effort in a clandestine operation after France stopped supplying it with uranium fuel for the Dimona nuclear reactor in reaction to the 1967 Arab-Israeli War. Numerous sources believe that in 1968 Israel managed to obtain 200 tonnes of yellowcake from the Belgian mining company Union Minière. The company collaborated with Mossad in shipping out the ore from Antwerp to Genoa for a European front company which then surreptitiously transferred the ore to another vessel at night on the Mediterranean Sea.

Closure

The mine was officially closed on January 28, 2004, by presidential decree. However eight people died and a further thirteen people were injured in July 2004 when part of the old mine collapsed. Although industrial production has ceased with cement lids sealing off the mine shafts, there is evidence that some artisanal mining still goes on here.  A United Nations inter-agency mission, led by the UN Office for Coordination of Humanitarian Affairs (OCHA) and the United Nations Environment Programme (UNEP), and organised through their Joint Environment Unit, visited the mine.