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* Coal Authority Guidance MINE ENTRY ZONE OF INFLUENCE METADATA Published 9 October 2014 CONTENTS * 1. Description * 2. Spatial Information * 3. Attributes Print this page © 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: [email protected].

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 [email protected] 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 Back to top