For information about ropeways in the news, both current and historical...
Colorado Chairlift Resource Center, ColoradoSkiHistory.com
ANSI Safety Requirements B77.1-1999. Standard for Passenger Ropeways, Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors.
Countries have their own governing bodies to monitor safety and operation for ropeways. In the US, some states have agencies assigned for this purpose as well. For Colorado --