The Short Version
Welsome did uncover obscure records at Kirtland that helped expose secret U.S. human radiation experiments, but the claim misstates key details. The discovery is generally traced to 1987, not the early 1990s, and strong sources describe the records as declassified documents she was authorized to inspect, not misplaced classified files. What is accurate is that her reporting later brought previously unpublicized experiments to public attention.