Topographically Occurring Mine Symbols (TOMS) -- Lines

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator:

California Department of Conservation, Office of Mine Reclamation, Abandoned Mined Lands Unit

Publication_Date: 20010605

Title: Topographically Occurring Mine Symbols (TOMS) -- Lines

Edition: 1.2

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: Topographically Occurring Mine Symbols (TOMS)

Issue_Identification: Lines

Online_Linkage:

<http://www.consrv.ca.gov/OMR/abandoned_mine_lands/toms/index.htm>

Description:

Abstract:

Mining feature symbols digitized from 1:24000 scale, 7.5 minute USGS topographic quadrangles as scanned by the Stephen P. Teale Data Center (July, 1998).

Purpose:

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.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: unknown

Ending_Date: 1998

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -122.831790

East_Bounding_Coordinate: -116.387140

North_Bounding_Coordinate: 41.405722

South_Bounding_Coordinate: 33.711693

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Mine

Access_Constraints: None

Use_Constraints: None

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Office of Mine Reclamation

Contact_Person: Jonathan Mistchenko

Contact_Position: Environmental Scientist

Contact_Address:

Address_Type: mailing and physical address

Address: 801 K St., MS 09-06

City: Sacramento

State_or_Province: CA

Postal_Code: 95814

Country: USA

Contact_Voice_Telephone: 916-323-9198

Contact_Facsimile_Telephone: 916-322-4862

Contact_Electronic_Mail_Address: omr@consrv.ca.gov

Hours_of_Service: 8-5, M-F

Data_Set_Credit:

Eric Miller, John Mistchenko, Sarah Reeves, Mike Tuffly, Consumnes College, Shasta College, University of California at Davis,

Native_Data_Set_Environment: ESRI's ArcView 3.x

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

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 omision. All found errros were corrected.

Logical_Consistency_Report:

Logical consistency was insured by ocular inspection. No specific systematic tests were employed.

Completeness_Report:

Data is statewide in extent. Coverage varies from quadrangle to quadrangle due to revisions of the source maps.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

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.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Stephen P. Teale Data Center

Publication_Date: 1998

Title:

DRG - Digital Raster Graphic, USGS 7.5-minute Quad Images (trimmed)

Geospatial_Data_Presentation_Form: raster digital data

Publication_Information:

Publication_Place: Sacramento, CA

Publisher: Stephen P. Teale Data Center

Source_Scale_Denominator: 24000

Type_of_Source_Media: CD-ROM

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1996

Ending_Date: 1998

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: trimdrg

Source_Contribution:

All data in the dataset is derived from the 1:24,000 7.5-minute USGS topographic quadrangles. See trimdrg1.txt for source metadata

Process_Step:

Process_Description:

Each DRG covering a quadrangle was occularly inspected for mining features (as markers, lines or areas). Features were digitized from the DRG's and attributes were completed concurrently. The feature layers for each quadrangle were then merged to form a statewide dataset. Several quality control inspections were undertaken to identify errors of omission, comission and positional errors. Such errors have been corrected where identified.

Source_Used_Citation_Abbreviation: trimdrg

Process_Date: 2001

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Complete chain

Point_and_Vector_Object_Count: 94

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Albers Conical Equal Area

Albers_Conical_Equal_Area:

Standard_Parallel: 34

Standard_Parallel: 40.5

Longitude_of_Central_Meridian: -120

Latitude_of_Projection_Origin: 0

False_Easting: 0

False_Northing: -4000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 5.0

Ordinate_Resolution: 5.0

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1927 (CONUS)

Ellipsoid_Name: Clarke 1866

Semi-major_Axis: 6378206.4

Denominator_of_Flattening_Ratio: 294.978698213898

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: toms_line.dbf

Entity_Type_Definition:

Attributes of linear mine features as they exist on USGS 7.5-minute (1:24000) topographic quadrangles.

Entity_Type_Definition_Source: Office of Mine Reclamation

Attribute:

Attribute_Label: ID

Attribute_Definition: Unique integer identifier.

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1

Range_Domain_Maximum: 96

Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: USGSCODE

Attribute_Definition: Alphanumeric code for each 7.5-minute quadrangle.

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 00000A1

Range_Domain_Maximum: 90180Z9

Attribute:

Attribute_Label: TYPE

Attribute_Definition:

The type of mining feature as depicted on the 7.5-minute quadrangle.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Asphalt Pit

Enumerated_Domain_Value_Definition: Asphalt Pit

Enumerated_Domain:

Enumerated_Domain_Value: Borrow Pit

Enumerated_Domain_Value_Definition: Borrow Pit

Enumerated_Domain:

Enumerated_Domain_Value: Building

Enumerated_Domain_Value_Definition: Building

Enumerated_Domain:

Enumerated_Domain_Value: Cave

Enumerated_Domain_Value_Definition:

Sometimes used interchangeably with "Mine Tunnel", though typical refers to a natural geologic feature.

Enumerated_Domain:

Enumerated_Domain_Value: Cinder Pit

Enumerated_Domain_Value_Definition: Cinder Pit

Enumerated_Domain:

Enumerated_Domain_Value: Clay Pit

Enumerated_Domain_Value_Definition: Clay Pit

Enumerated_Domain:

Enumerated_Domain_Value: Conveyor

Enumerated_Domain_Value_Definition:

Used to represent some type of mining infrastructure for moving mined materials.

Enumerated_Domain:

Enumerated_Domain_Value: Dam

Enumerated_Domain_Value_Definition: Dam

Enumerated_Domain:

Enumerated_Domain_Value: Diggings

Enumerated_Domain_Value_Definition:

Area of surface mined land. Sometimes used to refer to hydraulic mine sites.

Enumerated_Domain:

Enumerated_Domain_Value: Dredger Tailings

Enumerated_Domain_Value_Definition: Waste material from dredge mining operations.

Enumerated_Domain:

Enumerated_Domain_Value: Electrical

Enumerated_Domain_Value_Definition: Electric transmission infrastructure.

Enumerated_Domain:

Enumerated_Domain_Value: Gravel Pit

Enumerated_Domain_Value_Definition:

Gravel pit mines. The markings are the same as sand, clay and borrow pits.

Enumerated_Domain:

Enumerated_Domain_Value: Historical Marker

Enumerated_Domain_Value_Definition: Historical marker.

Enumerated_Domain:

Enumerated_Domain_Value: Intricate Surface Area

Enumerated_Domain_Value_Definition: Area of non-specific surface mined land.

Enumerated_Domain:

Enumerated_Domain_Value: Lava Tube

Enumerated_Domain_Value_Definition: Lava tube

Enumerated_Domain:

Enumerated_Domain_Value: Mill Site

Enumerated_Domain_Value_Definition: Area of milling operations.

Enumerated_Domain:

Enumerated_Domain_Value: Mine Dump

Enumerated_Domain_Value_Definition: Usually used to refer to waste rock.

Enumerated_Domain:

Enumerated_Domain_Value: Mine Shaft

Enumerated_Domain_Value_Definition: Vertical opening to underground mine workings.

Enumerated_Domain:

Enumerated_Domain_Value: Mine Tunnel

Enumerated_Domain_Value_Definition:

Horizontal opening to underground mine workings. Commonly used to depict "adits" or "portals".

Enumerated_Domain:

Enumerated_Domain_Value: Mineral Location

Enumerated_Domain_Value_Definition: Area where a mineral resource has been identified.

Enumerated_Domain:

Enumerated_Domain_Value: Open Pit

Enumerated_Domain_Value_Definition:

Surface mined land. Distinguished from a "Quarry" by a notation on the map.

Enumerated_Domain:

Enumerated_Domain_Value: Other

Enumerated_Domain_Value_Definition: Unknown mining feature.

Enumerated_Domain:

Enumerated_Domain_Value: Pipe

Enumerated_Domain_Value_Definition: Pipe

Enumerated_Domain:

Enumerated_Domain_Value: Placer Diggings

Enumerated_Domain_Value_Definition: See "Diggings"

Enumerated_Domain:

Enumerated_Domain_Value: Placer Tailings

Enumerated_Domain_Value_Definition: Simlar to "Diggings".

Enumerated_Domain:

Enumerated_Domain_Value: Prospect

Enumerated_Domain_Value_Definition: Area of mineral exploration.

Enumerated_Domain:

Enumerated_Domain_Value: Quarry

Enumerated_Domain_Value_Definition:

Surfaced mined area. The point symbol is the same as an "Open Pit".

Enumerated_Domain:

Enumerated_Domain_Value: Sand Pit

Enumerated_Domain_Value_Definition:

Surface mined area where the commodity was identified as sand. See also, "Borrow Pit", "Clay Pit" and "Gravel Pit".

Enumerated_Domain:

Enumerated_Domain_Value: Spring

Enumerated_Domain_Value_Definition: Spring.

Enumerated_Domain:

Enumerated_Domain_Value: Stockpile

Enumerated_Domain_Value_Definition: Usually indicates an ore stockpile.

Enumerated_Domain:

Enumerated_Domain_Value: Strip Mine

Enumerated_Domain_Value_Definition: Surfaced mined area. See also "Intricate Surface Area".

Enumerated_Domain:

Enumerated_Domain_Value: Tailings

Enumerated_Domain_Value_Definition: Waste material following milling or other processing.

Enumerated_Domain:

Enumerated_Domain_Value: Tailings Pond

Enumerated_Domain_Value_Definition:

Area used to deposit mill tailings that were in the form of a slurry.

Enumerated_Domain:

Enumerated_Domain_Value: Tank

Enumerated_Domain_Value_Definition: Any type of tank for holding liquids.

Enumerated_Domain:

Enumerated_Domain_Value: Tramway

Enumerated_Domain_Value_Definition: Aerial conveyor system.

Enumerated_Domain:

Enumerated_Domain_Value: Trench

Enumerated_Domain_Value_Definition: A small excavation.

Enumerated_Domain:

Enumerated_Domain_Value: Tunnel

Enumerated_Domain_Value_Definition: Similar to "Mine Tunnel", but labeled as a "Tunnel".

Attribute:

Attribute_Label: MINENAME

Attribute_Definition:

Name of the mine site as depicted on the 7.5-minute topographic map. Unlabeled sites were designated "Unknown".

Attribute_Definition_Source: USGS

Attribute_Domain_Values:

Unrepresentable_Domain: Any text.

Attribute:

Attribute_Label: LENGTH

Attribute_Definition: Length of the linear feature

Attribute_Definition_Source: System generated

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 12000

Attribute_Units_of_Measure: meters

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Office of Mine Reclamation

Contact_Person: Jonathan Mistchenko

Contact_Position: Environmental Scientist

Contact_Address:

Address_Type: mailing and physical address

Address: 801 K St., MS 09-06

City: Sacramento

State_or_Province: CA

Postal_Code: 95814

Country: USA

Contact_Voice_Telephone: 916-323-9198

Contact_Facsimile_Telephone: 916-322-4862

Contact_Electronic_Mail_Address: omr@consrv.ca.gov

Hours_of_Service: 8-5, M-F

Resource_Description: TOMS

Distribution_Liability:

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.

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.

Metadata_Reference_Information:

Metadata_Date: 20050824

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Office of Mine Reclamation

Contact_Person: Eric G. Miller

Contact_Position: Research Analyst

Contact_Address:

Address_Type: mailing and physical address

Address: 801 K St., MS 09-06

City: Sacramento

State_or_Province: CA

Postal_Code: 95814

Country: USA

Contact_Voice_Telephone: 916-323-9198

Contact_Electronic_Mail_Address: omrcal@consrv.ca.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998