CHARTS: The coming critical minerals trade war is BRICS short of a load
"While a large number of countries around the world continue to talk about securing raw material supply, China is actually doing something about it."
This video by mining equipment manufacturer Joy Global, more educational than promotional, gives an excellent overview of longwall, versus room and pillar underground coal mining techniques.
The video clearly explains the difference between the two techniques and gives descriptions of equipment used, including: continuous miners with cutterheads, conveyor systems, rubber-tired shuttle cars, flexible conveyor trains, continuous chain haulage system, longwall mining entry development equipment, and longwall mining system with shearer, armoured face conveyor and roof supports.
Comments
Roger
very well done.
i especially like the big picture commentary accompanying the technical descriptions of mining methods and equipment