Equipment and Handling. Equipment has been a Caterpillar dealer for 89 years. Equipment sells and supports the broadest open cast and underground mining equipment product line in its territories as well as construction equipment and power systems.
Back — The roof or upper part in any underground mining cavity. Backfill — Mine waste or rock used to support the roof after coal removal. Barren — Said of rock or vein material containing no minerals of value, and of strata without coal, or containing coal in seams too thin to be workable.