ADVANTAGE OF L/W ADVANCING METHOD
Ful l production may be attained rapidly with little development work. I n L/W ADVANCING all the seam section is extracted in one operation,so a maximum degree of extension can be achieved. High degree of roof control can be obtend by sutable method of packing or caving. The good ventilation system is mantaion than board and pillar method. The method are suitable for seam with dirt band which is utilised for extaction of pack well.