English settlers discovered coal in Eastern North America in 1673 but commercial coal mining did not begin until the 1740s It remained a small industry until the early 1800s as American settlers preferred to use the plentiful supplies of wood.
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