In subsurface mining, ore is dug unto the ground.

Here's why:

* Ore is the rock that contains valuable minerals.

* Subsurface mining involves digging tunnels and shafts deep underground to access the ore deposits.

* The ore is then extracted from the ground and transported to the surface for processing.

So, while other things might be encountered during subsurface mining (like rock, soil, and water), the primary target is the ore.