Speakers at the Rotary meeting Tuesday the 14th of October 2025
Rob Van der Mark (vineyard owner Bendigo and Tarras) and Matt Sole (Archaeologist Chatto Creek)
Notes by Denis Flynn
The opposition case against the Rise and Shine mining operation
The presentation was by Rob Van der Mark as a member of the ‘Sustainable Tarras’ organisation. This organisation focuses on concerns about the proposed airport at Tarras and the Santana gold mine project. Rob said that his relationship with Santana had deteriorated over time. Santana has to report to its Australian shareholders and to the ASX, but there is little feedback locally.
Rob showed pictures of open cast goldmines elsewhere (picture below) to illustrate the impact of heavy machinery used in this type of mining on the landscape, compared to alluvial mining such as that at Miller’s Flat. With open cast hard rock mining the rock excavated is pulverised and then submerged in cyanide tanks to extract the gold. This has major concerns related to tailings and rock slurry.
The current high gold price is creating a desire to revisit old mine areas and exploratory drilling is occurring in Omakau, Ophir and sites in places like Lowburn and Bannockburn. This potential proliferation is a major concern for these areas.
Currently there are six companies looking at operating in Otago, but Santana is the flagship operation. There is potential for the landscape to change drastically if all these operations go ahead.
Rob showed pictures of the areas where Santana intends to operate in Bendigo around the 'Battery Hill' and 'Come in Time' battery sites and commented on the impact to various creeks in the area. Modern day mining will involve excavating seams 50 to 60 metres below the surface with the subsequent impact of millions of tons of waste rock. There will also be cyanide tanks and pits up to 1 kilometre long.
To illustrate, Rob showed diagrams of the Macraes mine in east Otago and commented that the Santana operation would eventually have about 15 kilometres of tunnels many of which would be above major acquifers. The mill will have crushers which will require a significant power supply to run and large cyanide tanks will be needed to leach out the gold from the crushed rocks. Also, after the gold has been extracted, the slurry will contain arsenic and cyanide and will be stored in a tailings dam. This slurry is then treated with lime.
Tailing dams can seep acid through drainage areas and these dams can be up to 2 kilometres long and 300 metres wide. Sulphates and nitrates can also leach out in to downstream areas which is a significant risk.
Bendigo station land has DOC covenants over some of it. Some creeks will have to be diverted, for example Shepherds creek and Bendigo creek and pits will impact these areas. Some roads will also have to be closed or diverted.
Heritage Trust have been offered money by Santana to persuade them not to oppose the mining proposals. Rob also talked about ecological issues and the impact on ecosystems and wildlife including lizards etc. The original proposal also included part of the Ida valley.
Comment was also made about the leverage that mining companies apply to local communities with job offers for example, but 60% of jobs will be sourced from elsewhere because of skills needed. As well, mining sites will be visible from the air for travellers to and from Queenstown airport.
Santana was ignorant of the need for access to the Council owned road for some of their operation as well as the ‘Pack Track’ to Thompson saddle which has been there since the 1870’s.
Rob also showed pictures of areas where there would be ratepayer liabilities and potential other drainage issues relating to local creeks and if tailings dams fail, the Clutha could also be polluted. There are also potential landslide or earthquake risks associated with tailing dams.
Diesel storage facilities are another problem, because a large volume of diesel will be required to run the equipment and vehicles. Water being taken from local aquifers for operations is also a problem.
In conclusion, Rob emphasised the difference between West Coast mining and mining in Central Otago because of tourism and related industries. He claimed that Santana is largely ignoring the local community and that the so-called ‘drop-in sessions’ are largely for recruitment. And that Santana is making full use of the fast-track legislation and there is also apparent Government support for Sanatana and particularly through Shane Jones.
The bottom line is that Santana do not really want public consultation, and no real cost benefit analysis relative to the local community has been carried out.
Matt Sole briefly commented on his area of concern which was to do with flora and fauna due to the unique nature of some of the species in the Bendigo area.