Mine Entry Zone of Influence Metadata
Published 9 October 2014
© Crown copyright 2014
This publication is licensed under the terms of the Open Government Licence v3.0 except where otherwise stated. To view this licence, visit nationalarchives.gov.uk/doc/open-government-licence/version/3 or write to the Information Policy Team, The National Archives, Kew, London TW9 4DU, or email: psi@nationalarchives.gov.uk.
Where we have identified any third party copyright information you will need to obtain permission from the copyright holders concerned.
This publication is available at https://www.gov.uk/government/publications/coal-mining-data-potential-zone-of-influence/mine-entry-zone-of-influence-metadata
1. Description
1.1 Keywords
Mine Entry, Coal Mining, Zone of Influence, Underground, Mining Report, Ground Stability
1.2 Abstract
A Mine Entry with Potential Zone of Influence is the area of the ground that might be affected if subsidence of the mine entry was to occur.
1.3 Purpose
Mining and geographical data held on the National Coal Mining Database.
1.4 Supplementary Information
Each mine entry has a zone of influence buffer around the mine entry calculated from the same algorithm used in producing a ‘Mine Entry Interpretive Report’. The Zone of Influence (ZOI) highlights the area on the surface that could potentially be affected in the unlikely event a collapse was to occur. The calculation takes into account the size of the mine entry entrance, the geological ‘drift’ deposits for the area and the original source from which the mine entry was captured.
The layer shows a mathematical area, which may be affected and does not attempt to take into account the varying local geological conditions that may affect this. Where the calculated ZOI is less than 20m then a default value of 20m is used.
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: MineEntryZOI
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 at: http://www.nationalarchives.gov.uk/doc/open-government-licence/
If you need any additional advice please contact the Customer Service Team on +44 (0) 345 762 6848 or at groundstability@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 mailing and physical address: 200 Lichfield Lane Mansfield Nottinghamshire NG18 4RD England Phone: +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: http://www.esri.com/metadata/esriprof80.html
2. Spatial Information
2.1 Horizontal coordinate system
Projected coordinate system name: British_National_Grid
Geographic coordinate system name: GCS_OSGB_1936
2.2 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
West: -5.973728
East: 1.952598
North: 58.029351
South: 50.977168
In projected or local coordinates Left: 165007.000000
Right: 633740.000000
Top: 904433.880000
Bottom: 125147.990000
Spatial data description Vector data information ESRI description
2.8 MineEntryZOI
ESRI feature type: Simple
Geometry type: Polygon
Topology: FALSE
Feature count: 171995
Spatial Index: TRUE
Linear referencing: FALSE
2.9 SDTS description
Feature class: SDTS feature type, feature count
MineEntryZOI: G-polygon, 171995
3. Attributes
3.1 Details for MineEntryZOI
Type of object: Feature Class
Number of records: 171995
3.2 Attributes
3.3 FID
Alias: FID
Data type: OID
Width: 4
Precision: 0
Scale: 0
Definition: Internal feature number.
Definition Source: ESRI
3.4 Shape
Alias: Shape
Data type: Geometry
Width: 0
Precision: 0
Scale: 0
Definition: Feature geometry.
Definition Source: ESRI
3.5 OBJECTID
Alias: OBJECTID
Data type: Number
Width: 9
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 data 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