Non-current Exploration Licence polygons across Tasmania, with tenement information derived from the Tasmanian Information on Geoscience and Exploration Resources (TIGER) system; administered by Mineral Resources Tasmania (MRT), Department of State Growth. Non-current licences includes licences which were registered but never granted (e.g. application was withdrawn, lapsed or refused) as well as licences that were granted and later ceased to be current (expired, surrendered, renewal refused etc.). In cases where a partial surrender was approved during the term of the exploration licence, only the final area is represented in this dataset. Exploration licence polygons delineate areas in which licence holders are permitted to explore for the listed categories of minerals. Exploration licences may be granted over both Crown and private land, so long as that land falls under the Mineral Resources Development Act 1995. Mineral exploration activities may include: geological, geophysical and geochemical surveys, drilling, and taking samples of rock, soil, water or other substances for analysis. Mining is not an exploration activity and cannot occur on an exploration licence.

Non-current exploration licence polygons are derived from the TIGER system. Boundaries are based on map coordinates, geographic features (e.g. coastline) or administrative boundaries (e.g. World Heritage Area) and show areas excluded from the licence (e.g. National Parks). The TIGER database is updated on a daily basis.

Positional Accuracy: The positional accuracy of the boundaries is dependent on the accuracy of the underlying data it follows. Where possible polygon boundaries follow MGA grid (legacy data follows AGD grid), geographic features or administrative boundaries. Attribute Accuracy: Tenement attributes are maintained in the TIGER system and are in accordance with the requirements of the legislation. Logical Consistency: All data is topologically related, all polygons close and all polygons are labelled. There are no duplicates. Completeness: Approximately 50%Complete.