Longwall coal faces equipped for the automatic starting, stopping, and
steering of power-loading machines as well as the manipulation of electric
trailing cables, including air and water hoses; controlled automatic
advancing of face conveyors as well as advancing and setting of roof
supports. Each and all operations are correctly phased and accomplished
from a remote point. With the advent of electronics and automation
techniques, the prospects of manless coal mining are very promising.
Dictionary of Mining, Mineral, and Related Terms