Multinational gold producer OceanaGold is serious about sustainability.
However, unlike many other mining companies, OceanaGold's commitment to achieving sustainable outcomes does not end when their mining operations cease.
Rather, for OceanaGold, the closure of a mine site is simply a transition to a new phase of operations, and a new opportunity to achieve additional important sustainability targets.
The former Globe Progress Mine, located in New Zealand's South Island, is a leading example of OceanaGold's commitment to achieving sustainable outcomes after mining operations cease.
OceanaGold operated the Globe Progress Mine for about 10 years, and on average, moved approximately 23 million tonnes of material each year. As a result of more than 610,000 ounces of gold being extracted from the site, the depth of the main pit was 275 m below the highest ground surface. However, in 2016, the mine transitioned from an operational phase to closure and a rehabilitation phase and has since come to be known as the Reefton Restoration Project.
Environmentally Sustainable Outcomes
The Reefton Restoration Project is largely focused on achieving environmentally sustainable outcomes. Central to the project is the re-establishment of vital ecosystems in the new post-mining landscape.
In order to achieve this, OceanaGold has already undertaken a large-scale reforestation programme, covering 118 hectares. To date, approximately 700,000 seedlings have been planted, and a further 200,000 seedlings will be planted over the next three years.
The reforested areas predominately include species native to New Zealand, such as Beech and Manuka varieties, to provide homes for local wildlife species and enhance biodiversity outcomes.
In addition to planting, the progressive rehabilitation also includes waste rock reshaping, backfilling operations, spreading of topsoil, and pest management, to ensure that the environment is visually integrated into the surrounding landscape.
Furthermore, the Reefton Restoration Project includes impressive social sustainability targets to benefit the local community. A major target of the project was to support local community projects and since the rehabilitation phase began, OceanaGold has provided funding for a local socio-economic development officer (NZ$150,000), and further funding for local community projects (NZ$50,000). They have also provided reinvigoration funding (NZ$50,000) to the local I-SITE visitors centre to encourage tourism for the area.
The restoration project also aimed to offer employment opportunities for local community members, and several positions have been filled by local people, while the local and regional economy has also been bolstered through the procurement of goods and services.
Rewarding Experience
Steph Hayton, the Environmental and Restoration Coordinator at OceanaGold, said that working on the project has been a hugely rewarding experience.
She stated that working on a project like this has required an adaptive management style whereby research and trial work informs decisions on all aspects of closure. This includes restoration trials determining rehabilitation methods at the beginning of the operation, all the way through to the establishment of passive treatment trials for long-term management of onsite water when the first went into closure. This approach has meant innovative techniques creating some great long-term solutions.
While some aspects of closure have been easier than others the work towards closure has been extremely satisfying, with rehabilitated areas of the site now hosting many native bird species including the nationally vulnerable South Island Kaka.
Contact:
Sam Pazuki
Tel: +1 720 602 4880
Email: IR@oceanagold.com
OCEANAGOLD CORPORATION 
