METHOD OF MINING

摘要

A method of mining includes striking the surface of friable to brittle, essentially homogeneous mineral materials (21) with a plurality of concave-faced cutting tools (16) rotating about a longitudinal axis (18) disposed substantially parallel with the surface of the mineral material (21). Segments of the mineral material (21) are cleaved by the cutting tools (16) as the tools strike the surface (20) and then pass along a predetermined path (34) completely through the mineral material (21).