There are many mines across the country, but one old mining town has been signaled out as especially dangerous for its 300 residents and various visitors. A government audit found that Rand Mining District in Randsburg, CA--some 2 1/2 hours north of LA by car--is especially hazardous. Officials found it so bad, they discovered "contaminated mine waste in residents' backyards and arsenic-laden trails openly used by thousands of off-road bikers," according to the Associated Press. more ›