Since the 1950s, the Rocky Flats Plant in Golden, Colorado, produced every plutonium trigger for U.S.-made nuclear warheads. But a 1989 raid by the FBI put a stop to the site’s nuclear production, its operators later pleading guilty to criminal violations of environmental law. Five years later, Rocky Flats sat unused and badly contaminated. The Department of Energy (DOE) called the site “one of the country’s most significant nuclear vulnerabilities,” projecting that cleanup would take 70 years and cost $36 billion. That same year, DOE awarded management of the cleanup to Kaiser-Hill Co., where Nancy Tuor served in a series of leadership roles before becoming CEO during completion of the contract. DOE, Kaiser-Hill Co., the Rocky Flats Coalition of Local Governments, and a non-profit Citizens Advisory Board, which included community, activist, and government representatives, worked together to ensure the cleanup effort met the needs of the community and federal regulations. In 2000, Kaiser-Hill and DOE agreed to a second, unique “closure” contract, which fast-tracked site cleanup to be complete by December 2006. Kaiser-Hill completed physical cleanup of Rocky Flats in October 2005, more than 50 years ahead of projections and 14 months ahead of the contracted target. Since 2007, the former nuclear weapons plant has been managed by the U.S. Fish & Wildlife Service as a National Wildlife Refuge, home to herds of mule deer and elk, along with the threatened Preble’s Meadow Jumping Mouse.