The dataset was derived by the Bioregional Assessment Programme from the Groundwater Modelling Report for Duralie Coal Mine dataset. The source dataset is identified in the Lineage field in this metadata statement. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement.
The dataset is a shapefile representing the approximate extents of the open cut pits (both existing and proposed) for the Duralie coal mine in the Gloucester sub-region. These were digitised from map image taken from Heritage Computing (2009) Environmental Assessment Duralie Extension Project Gloucester Coal - Appendix B Groundwater Assessment, Fig B-35, pp B-86
http://www.gloucestercoal.com.au/documents/Enviro_EAD_DCM_2010_Appendix_B_Groundwater Assessment.pdf
A map image from the report listed below was scanned. These were georectified to MGA 56 geotiffs using recognised features of known locations in the various map images as control points (eg road junctions, corners of administrative boundaries etc).
Selected features representing the open cut pits (both existing and proposed) shown on the map were manually digitised off the computer screen using a georectified map as a backdrop. Features were saved as ESRI shapefiles in the MGA z56 projection. Pits were tagged as existing or proposed in the attribute table.
Heritage Computing (2009) Environmental Assessment Duralie Extension Project Gloucester Coal - Appendix B Groundwater Assessment, Fig B-35, pp B-86
http://www.gloucestercoal.com.au/documents/Enviro_EAD_DCM_2010_Appendix_B_Groundwater Assessment.pdf
Bioregional Assessment Programme (XXXX) GLO Duralie Open Cut Pits v01. Bioregional Assessment Derived Dataset. Viewed 18 July 2018, http://data.bioregionalassessments.gov.au/dataset/6f45e667-93a9-4d0e-97da-6ef9b82df87a.