The Grateful Dead’s offshoot band, Dead and Company, says this summer was their last tour. And their final stop on that tour was in San Francisco, where fans celebrated the end of an era.  Reporter: Izzy Bloom, The California Report Doctors in California say a growing number of workers are getting really sick and dying from inhaling silica dust, while they sand and cut artificial stone to make kitchen countertops. State regulators are considering a petition Thursday for emergency rules.  Reporter: Farida Jhabvala Romero, KQED Learn more about your ad choices. Visit megaphone.fm/adchoices