The MP Cone crusher is a compressive crusher in which feed material is crushed between a fixed bowl liner and a moveable mantle. 

Bigger rock particles are crushed directly between the surfaces of the mantle and bowl liner. This is called single layer crushing. 

Smaller rock particles are crushed between other rock particles, which is termed multilayer crushing or inter-particle Comminution.

Multi-layer crushing plays a significant role in the MP cavity. This improves the reduction through the crusher and end product shape.