After 40 years, how advances in technology have allowed us to revisit Watergate:
“On November 19, 2009, hyperspectral imaging (HSI) of the documents was undertaken at the Library of Congress Preservation Research and Testing Division HSI Laboratory in Washington, DC. On December 11, 2009, and January 13, 2010, electrostatic detection analysis (ESDA) and video spectral comparison (VSC) examinations of the documents were undertaken at the Treasury Inspector General for Tax Administration Forensic Science Laboratory in Beltsville, MD. In support of these examinations, high resolution scans of the original documents and of the ESDA results were prepared at the NARA Special Media Preservation Reformatting Division Digital Imaging Laboratory in College Park, MD.
None of these efforts revealed or recovered additional content regarding H. R. Haldeman's 11:30 A.M. meeting with President Nixon in the Executive Office Building on June 20, 1972. “
Read more at US National Archives
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