LAS VEGAS — Nevada is home to more than 300,000 abandoned mines — mines that can kill you in an almost unimaginable number of ways. But those mines from Nevada’s olden days are attracting a modern-day problem for state and federal officials in charge of taking care of those death traps: vloggers and YouTubers. Interest in abandoned mines has spiked in recent years, according to Sean Derby, chief of Nevada’s abandoned mine lands program with the state Division of Minerals.