Shinkolobwe

Shinkolobwe, or Kasolo, or Chinkolobew, or Shainkolobwe, is a radium and uranium mine in the Haut-Katanga Province of the Democratic Republic of the Congo (DRC), located 20 km west of Likasi, 20 km south of Kambove, and about 145 km northwest of Lubumbashi.
The mine produced uranium ore for the Manhattan Project. It was officially closed in 2004.
History.
Shinkolobwe is the name of a nearby village, long since gone, and the name of an indigenous thorny fruit. It is also slang for "a man who is easygoing on the surface but who becomes angry when provoked".
The mineral deposit was discovered in 1915 by English geologist Robert Rich Sharp (1881–1958). The mine was worked from 1921 onwards. 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.
Uranium for the Manhattan Project.
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. Nichols wrote:
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 Miniere. 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.
Postwar.
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 Miniere had sealed the mine with concrete.
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. The UNEP/OCHA concluded:
"Uranium for Iran" allegation.
On July 18, 2006, the DRC Sanctions Committee (United Nations Security Council Committee Established Pursuant to Resolution 1533 (2004), to give it its full name) released a report dated June 15, 2006, which stated that artisanal mining for various minerals continues at the Shinkolobwe mine:
On August 9, 2006, the "Sunday Times" published a report claiming that Iran was seeking to import "bomb-making uranium" from the Shinkolobwe mine, quoting the UN report of July 18, 2006. It gives "Tanzanian customs officials" as its sole source for the claim that the uranium was destined for processing in the former Soviet republic of Kazakhstan via the Iranian port of Bandar Abbas. Douglas Farah has compared this to North Korean attempts to get uranium from the same mine.
Geology.
The formations of the Shinkolobwe ore deposit form a spur of the Mine Series wedged into a fold-fault. Uranium minerals, and associated cobalt, silver, nickel, bismuth and arsenic, occur as massive sulfide ore in veinlets along fractures, joints, and minor faults within the Katanga synclinorium. Uraninite mineralization occurred 630 Ma, when uraniferous solutions percolated into the dolomitic shales of the Precambrian Mine Series (Serie des Mines), under the Roche Argilotalqueuse (R.A.T.) nappe. The Mine Series is a Schist-Dolomite System postulated to be in the Roan System. This schistose-dolomite appears structurally between two contacts of the Kundelungu System, the Middle Kundelungu and the Lower Kundelungu, of the Katanga Group. The Lower and Upper Kundelungu form a double syncline, the northern limb of which overlies the Shinkolobwe Fault. These structural complexities aside, the Katanga stratigraphic column consists, top to bottom, of the Precambrian Kundelungu System (Upper, Middle and Lower), the Grand Congomerate and Mwashya Systems, the Schist-Dolomite System (Roan System-Mine Series of R.G.S., C.M.N., S.D., R.S.C., R.S.F., D. Strat., R.A.T. Gr., and R.A.T.) and the Kibara Group. 
Uraninite crystals from 1 to 4 centimeter cubes were common. New minerals identified here include ianthinite, becquerelite, schoepite, curite, fourmarierite, masuyite, vandendriesscheite, richetite, billietite, vandenbrandeite, kasolite, soddyite, sklodowskite, cuprosklodowskite, dewindtite, dumontite, renardite, parsonsite, saleite, sharpite, studtite, and diderichite. Similar uraninite deposits occur 36 km west at Swampo, and 120 km west at Kalongwe.
Surface ores consist of oxidized minerals from supergene alteration above the water table and the formation of uranyl minerals. Below the water table, hypogene ores include uraninite (pitchblende), cobalt-nickel sulfides and selenides.