As tons of toxic soil piled up around cops who worked at the Hunters Point shipyard, San Francisco assured them  they were safe. But the city never knew, and still doesn't. Jason Fagone and Cynthia Dizikes talk about the latest story in their investigation for the San Francisco Chronicle. Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

Why this story matters

A billion-dollar cleanup of a former Navy base in San Francisco has been rocked by fraud. San Francisco Chronicle reporters Jason Fagone and Cynthia Dizikes explore the history of that shipyard and other Navy installations that handled toxic materials, and what’s being done to make sure the land is safe enough for new housing and other development.