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A technician works on detectors for the DAMA/LIBRA project. DAMA/LIBRA uses 250 kg of sodium iodide inside a high-purity copper shield that sits in the Gran Sasso mine in Italy. In 2008, the DAMA/LIBRA collaboration announced a result that could not be explained by ordinary WIMPs, challenging theorists to come up with alternative explanations. (Unit: 10)