Manhattan Project notebooks hold a secret - radioactivity Oct. 7, 2009 In March 2009, papers and notebooks from experiments conducted by Princeton chemists for the Manhattan Project were uncovered. Some thought the notebooks would be great additions to Princeton’s Mudd Library collections. However, many of the documents and notebooks were contaminated with radioactive material. The documents were… Filter News By Year 2024 (1)2023 (5)2022 (16)2021 (3)2020 (4)2019 (1)2009 (1)(selected)