2. Ore body elements dip Width,thickness hanging wall footwall overburden horizontal exetend Vertical extent
3. Ore body geometry Seam or flat dipping vein Steeply dipping vein Massive deposit Dip < 10 ° Thickness is much less than horizontal extend Medium dipping vein Dip > 45 - 50° Thickness is much less than horizontal and vertical extend 10° < Dip < 45° Thickness is much less than horizontal and vertical extend Horizontals and vertical extends are equal
12. Room-and-pillar mining with backfilling Backfilling with cemented fill Primary extraction Secondary extraction Filling of secondary opening with cemented fill Tertiary extraction Filling of tertiary openings with non cemented fill