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Legacy mine inventory and current projects
An inventory of legacy mine sites is currently being developed. The inventory will identify high risk sites with the potential to cause significant environmental impact.
The inventory and associated risk based assessment will be used to determine priority sites and the allocation of resources within the legacy mines unit (LMU) and the fund.
The inventory commenced in 2014 will take 18 months to two years to develop due to the remote locations of many of the sites and the limited access during the wet season.
The inventory will be dynamic and will continually evolve as site conditions change and further information becomes available.
Current work program
While the inventory is being developed, the unit has commenced work programs at sites known to be high risk.
Monitoring equipment was installed at four sites across the Northern Territory in 2014.
Stations provide real-time data on environmental conditions such as pit water level, electroconductivity, creek flow and weather.
Mine shaft remediation
Backfilling and covering of mine shafts from legacy mines commenced in 2015. Mine shafts present a significant public safety risk and have been given a high priority for remediation.
Works have now been completed at Fossicking Area 4 and are nearing completion at the Eldorado Area in Tennant Creek. Further works have been completed in the Hatches Creek area the Arltunga Historical Reserve.
Ongoing works are planned as part of a three year public safety program in the Tennant Creek and surrounding areas.
Weed control and surveys on selected mining tenements around Tennant Creek commenced in late 2015.
A baseline weed survey has also been completed at the former Goodall Mine Site.
A 12 month dust survey at the Peko Mine Site is underway to determine if there is the potential for human health impacts from windblown tailings.
A groundwater investigation is being undertaken at the Redbank Mine Site to determine the mechanisms for seepage of contaminated water into sensitive waterways.