Securing old mines in Las Vegas
The Nevada Division of Minerals and Clark County plan to permanently close at least 40 abandoned mine shafts at the valley's southwestern edge. The hazardous mine openings are left over from a gypsum mine that operated from 1909 until 1931. Work to fill in the shafts is set to start April 2 and take about a month. The project is expected to cost about $250,000.