Karen Silkwood (1946-1974), a nuclear plant laborer who died while investigating safety violations made by her employer, is viewed as a martyr by anti-nuclear activists. Her story was made into a film, Silkwood, in 1983.

On the night of November 13, 1974, Karen Silkwood, a technician at the Kerr-McGee Cimarron River nuclear facility in Crescent, Oklahoma, was driving her white Honda to Oklahoma City. There she was to deliver a manila folder full of alleged health and safety violations at the plant to a friend, Drew Stephens, a New York Times reporter and national union representative. Seven miles out of Crescent, however, her car went off the road, skidded for a hundred yards, hit a guardrail, and plunged off the embankment. Silkwood was killed in the crash, and the manila folder was not found at the scene when Stephens arrived a few hours later. Nor has it come to light since...