| Value | Definition |
|---|
| Asphalt Pit | Asphalt Pit
|
| Borrow Pit | Borrow Pit
|
| Building | Building
|
| Cave | Sometimes used interchangeably with "Mine Tunnel",
though typical refers to a natural geologic feature.
|
| Cinder Pit | Cinder Pit
|
| Clay Pit | Clay Pit
|
| Conveyor | Used to represent some type of mining infrastructure
for moving mined materials.
|
| Dam | Dam
|
| Diggings | Area of surface mined land. Sometimes used to refer to hydraulic mine sites.
|
| Dredger Tailings | Waste material from dredge mining operations.
|
| Electrical | Electric transmission infrastructure.
|
| Gravel Pit | Gravel pit mines. The markings are the same as sand,
clay and borrow pits.
|
| Historical Marker | Historical marker.
|
| Intricate Surface Area | Area of non-specific surface mined land.
|
| Lava Tube | Lava tube
|
| Mill Site | Area of milling operations.
|
| Mine Dump | Usually used to refer to waste rock.
|
| Mine Shaft | Vertical opening to underground mine workings.
|
| Mine Tunnel | Horizontal opening to underground mine workings. Commonly used to depict "adits" or "portals".
|
| Mineral Location | Area where a mineral resource has been identified.
|
| Open Pit | Surface mined land. Distinguished from a "Quarry" by a notation on the map.
|
| Other | Unknown mining feature.
|
| Pipe | Pipe
|
| Placer Diggings | See "Diggings"
|
| Placer Tailings | Simlar to "Diggings".
|
| Prospect | Area of mineral exploration.
|
| Quarry | Surfaced mined area. The point symbol is the same as an "Open Pit".
|
| Sand Pit | Surface mined area where the commodity was identified as sand. See also, "Borrow Pit", "Clay Pit" and "Gravel Pit".
|
| Spring | Spring.
|
| Stockpile | Usually indicates an ore stockpile.
|
| Strip Mine | Surfaced mined area. See also "Intricate Surface Area".
|
| Tailings | Waste material following milling or other processing.
|
| Tailings Pond | Area used to deposit mill tailings that were in the form of a slurry.
|
| Tank | Any type of tank for holding liquids.
|
| Tramway | Aerial conveyor system.
|
| Trench | A small excavation.
|
| Tunnel | Similar to "Mine Tunnel", but labeled as a "Tunnel".
|