A timber used for the support of overhead rock or the hanging wall. A stull may also be used to support a platform. In coal mining, it is often referred to as a prop.
Adit
Chute
Collar
Country Rock   
Cribbing
Crosscut
Crusher
Deposit
Dip
Drift
Exploration
Fault
Footwall
Grizzly
Hanging Wall   
Headframe
Hematite
Hoist
Incline
Inclined Shaft   
Level
Magnetite
Outcrop
Ore
Ore Pass
Orebody
Overburden
Pillar
Pinch
Pitch
Raise
Shaft
Skip
Slope
Stope
Strike
Stull
Tailings
Timber
Vein
Winze
Stull
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