A mine material processing apparatus may include a rotatable drum to process mine material, and wheel assemblies configured for rotation of the rotatable drum. Each wheel assembly may include an inner rim, an outer rim surrounding the inner rim, and gas springs operatively coupled between the inner rim and the outer rim.

A control method and system for avoiding collisions between components of a machine includes a controller that receives position signals from sensors associated with movable components of the machine. The controller determines the positional coordinate representations of the components within a coordinate system based upon the position signals and the outer dimensions of the respective components. If any of the components are within preset collision slowdown or shutdown zones within the coordinate system, then the speed of those components is restricted or the components are shutdown, respectively, in the direction of collision.

A control method and system for avoiding collisions between components of a machine includes a controller that receives position signals from sensors associated with movable components of the machine. The controller determines the positional coordinate representations of the components within a coordinate system based upon the position signals and the outer dimensions of the respective components. If any of the components are within preset collision slowdown or shutdown zones within the coordinate system, then the speed of those components is restricted or the components are shutdown, respectively, in the direction of collision.