mines KCBX Two-Way: Hidden mercury mines in San Luis Obispo County By Tyler Pratt • Mar 28, 2019 David Middlecamp/San Luis Obispo Tribune Listen Listening... / 10:33 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. Issues & Ideas: Law enforcement transparency, hidden mines and Seder traditions By Tyler Pratt, Greta Mart & Fr. Ian Delinger • Mar 26, 2019 Listen Listening... / 58:52 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.