mines

David Middlecamp/San Luis Obispo Tribune

For more than a century, mecury mines were active across San Luis Obispo County. The roughly 150 mines not only drove the county's economy, they helped establish Cambria as a city in the 19th century. They also played a role in America’s history—from the California Gold Rush to World War II. All of the county's mines have long since shuttered, but are still hiding in plain sight.

On this week's episode of Issues & Ideas, major newspapers and public radio stations across California—including KCBX—are collaborating on a statewide project to look at personnel records from local enforcement agencies.