* Sedimentary Rocks: These are formed from the accumulation of sediments, like sandstone, limestone, and shale.
* Igneous Rocks: These form from the cooling and solidification of magma or lava, like granite, basalt, and obsidian.
* Metamorphic Rocks: These form when existing rocks are transformed by heat and pressure, like marble, slate, and gneiss.
So, what kind of rock is being dug out depends on the location and what the rock is being used for.
Can you tell me more about what you're interested in? For example, are you thinking about:
* Mining for specific minerals or gemstones?
* Quarrying for building materials?
* Excavating for construction projects?
Knowing more about your question will help me give you a more specific answer.
