Probable shallow coal mine workings metadata
Published 9 October 2014
1. Description
1.1 Keywords
Probable Shallow Workings, Coal, Mining, Underground, Energy, Mining Report, Ground Stability
1.2 Abstract
Probable shallow coal mine workings contain locations and estimated extents of probable shallow underground workings for which no recorded plan exists, but where it is likely that workable coal at shallow depths has been mined before records were kept. The data has been estimated from available mining records by qualified mining surveyors.
1.3 Purpose
Mining and geographical data held on the National Coal Mining Database.
1.4 Supplementary information
Since 1872 there has been a law that requires all coal mine operators to deposit working plans of the mine with the Government following the cessation of operations. Prior to this date the plans were often destroyed or kept in private ownership.
This layer was constructed to show areas where the Coal Authority believe that there is evidence of past coal mine workings but have no formal abandonment plan for those workings, such as an adjacent mine plan may have the annotation ‘Ancient workings’, located by development and/or site investigation, the workings may even be shown on an estate/surface plan.
This dataset does not therefore constitute a complete dataset and omissions of recorded and unrecorded shallow workings do not constitute virgin un-worked ground; standing advice must prevail.
The National Coal Mining Database, which is based on the records held at The Coal Authority offices in Mansfield, Nottinghamshire, is updated on a regular basis. This dataset has been extracted from this dynamic database on the date stated below and therefore represents a snapshot in time.
1.5 Status of the data
Extract of data from the National Coal Mining Database
Data update frequency: As needed
1.6 Time period for which the data is relevant
Date and time: 14/08/2014
Description: Dataset export from the National Coal Mining Database
1.7 Publication Information
Who created the data: The Coal Authority
Date and time: 26/09/2014
1.8 Data storage and access information
File name: ProbableShallowWorkings
Type of data: vector digital data
Data processing environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 10.0 (Build 2800)
1.9 Constraints on accessing and using the data
Access and use constraints: This data, service or application is provided free of charge under the terms and conditions of the Open Government Licence.
The full terms and conditions of the Open Government Licence can be viewed here.
If you need any additional advice please contact the Customer Service Team on +44 (0) 345 762 6848 or email customerservice@coal.gov.uk.
1.10 Details about this document
Contents last updated: 26/09/2014
1.11 Who completed this document
Louise Tipper, Information Management, The Coal Authority, 200 Lichfield Lane, Mansfield, Nottinghamshire NG18 4RG, England. Telephone +44(0) 345 762 6848
1.12 Standards used to create this document
Standard name: FGDC Content Standards for Digital Geospatial Metadata
Standard version: FGDC-STD-001-1998
Time convention used in this document: local time
Metadata profiles defining additonal information ESRI Metadata Profile
2. Spatial
2.1 Horizontal coordinate system
Projected coordinate system name: British_National_Grid
Geographic coordinate system name: GCS_OSGB_1936
2.2 Details
Map Projection Name: Transverse Mercator
Scale Factor at Central Meridian: 0.999601
Longitude of Central Meridian: -2.000000
Latitude of Projection Origin: 49.000000
False Easting: 400000.000000
False Northing: -100000.000000
2.3 Planar Coordinate Information
Planar Distance Units: meters
Coordinate Encoding Method: coordinate pair
2.4 Coordinate Representation
Abscissa Resolution: 0.000000
Ordinate Resolution: 0.000000
2.5 Geodetic Model
Horizontal Datum Name: D_OSGB_1936
Ellipsoid Name: Airy_1830
Semi-major Axis: 6377563.396000
Denominator of Flattening Ratio: 299.324965
2.6 Altitude System Definition
Resolution: 0.000100
Encoding Method: Explicit elevation coordinate included with horizontal coordinates
2.7 Bounding coordinates
Horizontal
In decimal degrees | In projected or local coordinates |
---|---|
West: -2.094319 | Left: 393739.658742 |
East: -2.079946 | Right: 394692.250000 |
North: 53.469310 | Top: 396983.649563 |
South: 53.457808 | Bottom: 395705.349900 |
Vertical
Minimum elevation: 0.000000 Maximum elevation: 0.000000
2.8 ProbableShallowWorkings
ESRI feature type: Simple
Geometry type: Polygon
Topology: FALSE
Feature count: 12474
Spatial Index: TRUE
Linear referencing: TRUE
2.9 SDTS description
Feature class: SDTS feature type, feature count
ProbableWorkings: G-polygon, 12474
3. Attributes
3.1 Details for ProbableShallowWorkings
Type of object: Feature Class
Number of records: 12474
3.2 FID
Alias: FID
Data type: OID
Width: 4
Precision: 0
Scale: 0
Definition: Internal feature number.
Definition Source: ESRI
3.3 Shape
Alias: Shape
Data type: Geometry
Width: 0
Precision: 0
Scale: 0
Definition: Feature geometry.
Definition Source: ESRI
3.4 OBJECTID
Alias: OBJECTID
Data type: Number
Width: 9
3.5 NAME
Alias: NAME
Data type: String
Definition:
The local name for the Coal Mining Reporting Area
Width: 80
3.6 FEATURE_TYPE
Alias: FEATURE_TYPE
Data type: String
Definition: The coal mining feature type
Width: 50
3.7 HYPERLINK
Alias: HYPERLINK
Data type: String
Definition: Web URL for further information
Width: 50
3.8 SHAPE_Length
Alias: SHAPE_Length
Data type: Float
Width: 19
Number of decimals: 11
3.9 SHAPE_Area
Alias: SHAPE_Area
Data type: Float
Width: 19
Number of decimals: 11
Definition: Area of feature in internal units squared.
Definition Source: ESRI