LONDON - Keith Richards has acknowledged consuming a raft of illegal substances in his time, but this may top them all. In comments published Tuesday, the 63-year-old Rolling Stones guitarist said he had snorted his father’s ashes mixed with cocaine. “The strangest thing I’ve tried to snort? My father. I snorted my father,” Richards was quoted as saying by British music magazine NME. “He was cremated, and I couldn’t resist grinding him up with a little bit of blow. My dad wouldn’t have cared,” he said, adding that “it went down pretty well, and I’m still alive.” Richards’ father, Bert,...