An estimate or estimates may be the principal data used to assess the coal resources and reserves of an area See economic assessment and geologic assessment auger mining A method often associated with contour strip mining to recover additional coal after the overburden to coal ratio has become too great for further contour mining.
Jaw crusher is the vital equipment in crushing industry.Detail
Roll crusher (roller crusher) is suitable for the fine crushing of the materials with feeding size less than 110mm, and finished particle size 3-30mm.Detail
Sand maker is also known as impact crusher or sand making machine.Detail
Ball mill is the vital equipment for recrushing after being crushed.Detail
Circular vibrating screen is mainly used to screen the dry materials used for metallurgy, coal, ore, etc.Detail
Raymond mill is also known as Raymond, Raymond machine.Detail