California Department of Conser, Office of Mine Reclamation, Abandoned , 20010605, Topographically Occurring Mine Symbols (TOMS) -- Points: Topographically Occurring Mine Symbols (TOMS) Points.Online Links:
This is a Point data set. It contains the following vector data types (SDTS terminology):
The map projection used is Albers Conical Equal Area.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 5.0
Ordinates (y-coordinates) are specified to the nearest 5.0
Planar coordinates are specified in meters
The horizontal datum used is North American Datum of 1927 (CONUS).
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.978698213898.
Range of values | |
---|---|
Minimum: | 1 |
Maximum: | 51336 |
Resolution: | 1 |
Range of values | |
---|---|
Minimum: | 00000A1 |
Maximum: | 90180Z9 |
Value | Definition |
---|---|
Asphalt Pit | Asphalt Pit |
Borrow Pit | Borrow Pit |
Building | Building |
Cave | Sometimes used interchangeably with "Mine Tunnel", though typically 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 | Similar to "Diggings". |
Prospect | Area of mineral exploration. |
Quarry | Surface 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 linear excavation. |
Tunnel | Similar to "Mine Tunnel", but labeled as a "Tunnel". |
Any text.
Value | Definition |
---|---|
0 | False. |
1 | True |
Value | Definition |
---|---|
0 | False. |
1 | True |
Eric Miller, Jonathan Mistchenko, Sarah Reeves, Mike Tuffly, Consumnes College, Shasta College, University of California at Davis,
916-323-9198 (voice)
916-322-4862 (FAX)
omr@consrv.ca.gov
To develop a statewide digital spatial dataset of accurately located mining features. Other digital datasets covering the state are limited to mining operations (or claims) but do not locate physical features resulting from mining.
Stephen P. Teale Data Center, 1998, DRG - Digital Raster Graphic, USGS 7.5-minute Quad Images (trimmed): Stephen P. Teale Data Center, Sacramento, CA.
Data sources used in this process:
Ten percent of the quads were sampled for omission and attribute accuracy. From the sampled population, there were approximately ten percent errors on the attributes and ten percent on omission. All found errros were corrected.
Positional accuracy is reliant on the accuracy of the original source maps. USGS topographic quadrangles typically state that the maps comply with national map accuracy standards. Human digitization of the mining symbols has likely added slight deviations from the original source map, though no formal method has been undertaken to quantify this additional error.
Data is statewide in extent. Coverage varies from quadrangle to quadrangle due to revisions of the source maps.
Logical consistency was insured by ocular inspection. No specific systematic tests were employed.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints: The State of California, Department of Conservation, its employees, agents or contractors make no warranty of any kind, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any of the maps and associated information. The locations and extent of these mine sites have not been confirmed by field investigations. The information is subject to change as more accurate and up-to-date information becomes available. While the Department may update this information from time to time, available resources may prevent the Department from updating this information on a timely basis. The Department therefore does not warrant that this information is the most current and up-to-date information. The user of the information assumes all responsibility for ensuring that they have the most current and accurate information. All maps are designed for use at the designated scale and should not be enlarged or used for making site-specific decisions of any kind. Distribution of this data is intended for informational purposes and should not be considered authoritative or relied upon for navigation, engineering, legal, or other site-specific uses, including but not limited to the obligations of sellers of real property and their disclosure obligations under California law. The Department makes no warranty of any kind, express or implied, nor assumes any legal liability or responsibility for the integration of the information, programs or software into any other personal or private computer system or hardware. The user of this information assumes any and all risks and understands that this information is provided on an “as is” basis. All warranties of any kind, express or implied, including but not limited to the implied warranties of merchantability, fitness for a particular purpose, freedom from contamination computer viruses and non-infringement of proprietary rights are disclaimed.
916-323-9198 (voice)
916-322-4862 (FAX)
omr@consrv.ca.gov
TOMS
The Department of Conservation makes no warranties as to the suitability of this product for any particular purpose.
916-323-9198 (voice)
omrcal@consrv.ca.gov