Karen Silkwood was a labor union activist in Oklahoma. She was about to blow the whistle on her work employers at the Kerr-McGee Plutonium Plant when she found herself contaminated with plutonium. On November 13,1974, as she was heading to meet a journalist, her car crashed, killing her instantly. Police claimed it was an accident, other reports claimed she was murdered. The case remains unsolved.
Karen Silkwood - Wikipedia, the free encyclopedia // "American chemical technician and labor union activist known for raising concerns about corporate practices related to health and safety of workers in a nuclear facility. Her mysterious death received extensive coverage and was the subject of a victorious lawsuit against chemical company Kerr-McGee."