Material used as an electrolyte to disperse mineral particles in a liquid
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Category: <span>D</span>
An unintentional change in the course of drilling
A unit of temperature or angle
Damping an explosion
A gradually descending pathway in a mine, a ramp
The area used for loading personnel and tools into mine cage for descent or ascent
A mix of rock, water, and/or other materials
A barrier to pool water
A type of light-colored volcanic rock, rich in silica (63-68%)
Volcanic movements of rock including folding, shearing, compression and expansion