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Since acquiring the Waihi mining operations in 2015, OceanaGold has been committed to extending the life of mining in Waihi. We have invested in an extensive exploration programme and are currently developing a significant resource through Project Martha.

We are now proposing to further extend the life of mining in Waihi through the development of Project Quattro. The project will integrate with the already consented Project Martha mining activities and has four main components:

• The Martha Open Pit Phase 5 – An expansion of the existing Martha pit.

• The Gladstone Open Pit – A new, smaller pit to the west of the OceanaGold Waihi processing plant.

• Tailings Storage – Increasing tailings storage capacity by constructing a new tailings storage facility (TSF3) immediately east of the current facilities, raising the height of tailings storage facility 1A (TSF1A) and investigating additional storage options that may include disposal within Gladstone open pit.

• The Northern Rock Stack – A new rock storage facility to the north of the current tailings storage facilities.



Before we can start any project, we must often obtain resource consents. Following a period of consultation and further investigation into the effects of the proposed project, and dependent on the results, we will lodge Resource Management Act applications with the Hauraki District Council and Waikato Regional Council.

The consenting process will involve a publicly notified process that will require hearings where anyone will be able to have a say on the proposed project. We will keep you informed about where and how you can get involved.


Prior to applying for consent, we want to get the community’s feedback on the proposed project.

We will share details of the project with affected and interested stakeholders and provide opportunities for them to give feedback that will contribute to the final project design.

Ultimately, we want the project to proactively contribute to the goals and aspirations of the community.


As part of this process, we will be conducting a Social Impact Assessment – this is a study that is designed to identify and help us manage the effects of the proposed project on the Waihi community’s lifestyle, culture, health, environment and quality of life. The Social Impact Assessment process will involve working with the community to gather information using surveys, interviews, focus groups, and one-on-one meetings.



OceanaGold Corporation is a gold and copper producer with over 30 years of operating sustainably in New Zealand.

At Waihi, we operate a successful underground mining operation and also are actively exploring in the region.

We have a mine at Macraes Flat in the South Island plus mines in the Philippines and the United States.

At OceanaGold, sustainability is fundamental to the way we do business. We are committed to responsible mining, managing our effects and, more broadly, contributing to our host communities and society.

As part of Project Quattro, we are making a commitment to work collaboratively with our local communities to create opportunities, build resilience, and leave a positive, long-lasting legacy well beyond the mining life cycle.



OceanaGold Waihi is committing to contribute to the sustainable development of Waihi. Consultation will help inform us of the community’s values and aspirations. From this, we will develop and partner in sustainable community development initiatives.