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Rocky Flats begins to use plutonium to build nuclear weapons triggers.
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Released a small amount of radioactive plutonium comtamination.
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FBI and EPA raid Rocky Flats to investigate allegations of enviornmental crimes.
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Colorado Governer Roy Romer signs agreements with Department of Energy to fund state oversight of Rocky Flats Health and Enviornmental Studies.
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Rocky Flats stops weapon production.
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Rocky Flats starts the clean-up process.