Common Types of Industrial Mining Equipment & MachineryЯг одоо бидэнтэй нэгдээрэй
Longwall mining usually takes place deep underground, when excavating coal. The process relies on incredibly sophisticated interconnected pieces of equipment that work together in an efficient and safe mining operation. Source: Midwest. A longwall mining site is usually 3 to 4 kilometers long and 250 to 400 meters wide.