Patent ID: 8434706

Claim:
A system for receiving excavated material at a mine, for comminuting the material and for transporting the material to another site, the system comprising in combination: (a) a mobile sizer having (i) a body supported on three spaced apart crawler track assemblies, with at least two of said assemblies being pivotal and capable of providing serpentine movement to the mobile sizer; (ii) a feed assembly having a feed hopper for receiving the excavated material and a feed conveyor to transport the material from the feed hopper to a rock crusher spaced apart from the feed hopper; and (iii) a discharge conveyor having a first end portion below the rock crusher and a second end portion spacedly outward of the body; (b) a telescoping conveyor for receiving material from the discharge conveyor, the telescoping conveyor having a first end portion movably attached to the body proximate the second end portion of the discharge conveyor, and a second end portion distal from the body operatively interconnected to a mobile hopper; (c) a mobile bridge conveyor carrying the mobile hopper and operatively communicating with a conveyor system for transporting the material to a distal site; and (d) a control system operatively interconnected to the mobile sizer, the discharge conveyor, the telescoping conveyor, the mobile hopper, the bridge conveyor and the conveyor system to monitor and control functions and maintain a continuously operative interconnection therebetween for movement of the material while stationary and while moving, and for actuating the crawler track assemblies and for pivoting the pivotal crawler track assemblies in a first direction for movement through first half of a serpentine turn and for pivoting the pivotal crawler track assemblies in a second direction for movement through second half of a serpentine turn to advance the mobile sizer in a direction perpendicular to the elongate length of the body.