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32 Cards in this Set
- Front
- Back
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Strike |
A horizontal line on a vein or stratum |
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Apex |
A portion of the surface of the undisturbed rock formation which is included between walls or sides of the mineral deposit |
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Heave |
Is the distance between the two parts of the same vein which is divided by a fault, measured along a strike. |
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Spad |
Is the small nail or hook in the roof which marks a survey station and from which a plumb-bob maybe hung. |
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Dip |
The angle at which beds on a strata are inclined from the horizontal |
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Adit |
An approximately horizontal underground passageway for drainage or ventilation |
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Back of Roof |
The top of a passage way |
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Borehole |
A hole sometimes of great depth, drilled for exploration or to facilitate operations. |
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Collar |
Timbers or concrete around the top of the shaft |
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Connection |
A passageway driven from one part of underground workings to another |
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Heading |
A preliminary passageway driven for exploration or as an aid to future work |
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Levels |
Horizontal passageways at different elevations |
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Outcrop |
The portion of the vein or stratum exposed at the surface of the ground |
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Raise |
An excavation from which ore has been extracted either above or below a level |
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Tunnel |
A relatively horizontal passageway open at both ends |
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Winze |
A vertical or inclined opening driven downwards from a point inside a mine for the purpose of connecting with a lower level |
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Drift |
A horizontal opening in or near a mineral deposit and parallel to the course of the vein or long dimension of the deposit |
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Back |
The top of a drift, cross-cut and it also called a roof |
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Cage |
Elevators for workers and minerals in a mine shaft |
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Chute |
A channel or trough underground or inclined through above ground through which ore falls or is shot by gravity from a higher to a lower level |
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Cross-cut |
A horizontal opening driven from a shift to a vein across the course of the vein in order to reach the ore zone |
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Face |
It is the end wall of a drift or crosscut or of bedded deposits |
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Footwall |
A wall under a vein |
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Garogue |
Undesired minerals associated with ores |
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Hanging wall |
The wall on the upperside of steeply inclined deposits . It is called roof in bedded deposits |
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Headframe |
A construction at top of a shaft location of noisting equipment |
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Pillar |
An ore support to decrase the roof subsidence as excavation progresses |
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Rib |
A wall in an entry |
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Shaft |
A principal opening through which mine is exploited |
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Sill |
It is a floor in underground survey |
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Stope |
It is the underground working area |
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Sump |
An excavation made at the bottom of a shaft to collect water |
