Resource consents require that OceanaGold provide to the Council regular monitoring reports on: noise; vibration; complaints; the location of underground workings; filled and unfilled stopes, seismic & rock movement; ground stability and ground settlement. OceanaGold NZ Ltd owns and operates the Martha open pit mine and the Favona, Trio, Correnso and Slevin underground mines – all of which are in Waihi. Monitoring reports received are made available to the public on this page of the Hauraki District Council’s website as well as on OceanaGold’s website.
View the key monitoring information on:
- Correnso/ SUPA/ Martha Location of Underground Workings - Monthly Mine Development Plan
- Correnso Stability
- Correnso/SUPA Filled/Unfilled Stopes & Seismic & Rock Movement Monitoring
- Social Impact Management Plan Reports
- Noise
- Vibration
- Complaints
- Dewatering & Ground Settlement
- Union Hill Heritage Features
- Trio Stability
For privacy reasons the data has had all references removed that would allow for the identification of individual people or properties.
The following documents are presented in Adobe Acrobat format 
. If you do not have Adobe Acrobat Reader, please visit www.adobe.com to download a free copy of the reader.
Mining Matters - Monthly Mine Plan for Correnso/SUPA/Martha (Location of Underground Workings)
Explanation of verification of the location of underground workings to the surface (97 KB)
- Mining Matters July 2022 [PDF, 2 MB]
- Mining Matters June 2022 [PDF, 1.6 MB]
- Mining Matters May 2022 [PDF, 2.7 MB]
- Mining Matters April 2022 [PDF, 1.4 MB]
- Mining Matters March 2022 [PDF, 2.5 MB]
- Mining Matters February 2022 [PDF, 1.2 MB]
- Mining Matters January 2022 [PDF, 2 MB]
- Mining Matters December 2021 [PDF, 1.6 MB]
- Mining Matters November 2021 [PDF, 1.3 MB] [PDF, 341 KB]
- Mining Matters October 2021 [PDF, 1.9 MB]
- Mining Matters September 2021 [PDF, 1 MB]
- Mining Matters August 2021 [PDF, 1.5 MB]
- Mining Matters July 2021 [PDF, 959 KB]
View earlier Underground Workings reports
Annual Mine Land Stability Reports
- Annual Mine Land Stability Report for 2021 [PDF, 3 MB]
- Correnso/SUPA/MDDP/Project Martha Annual Stability Report 2020 [PDF, 3.4 MB]
- Correnso/SUPA/MDDP/Project Martha Annual Stability Report 2019 [PDF, 4.4 MB]
- Correnso/SUPA/MDDP Annual Stability Report 2018 [PDF, 2.6 MB]
- Correnso/SUPA/MDDP Annual Stability Report 2017 [PDF, 2 MB]
- Correnso Annual Stability Report 2016 [PDF, 1.9 MB]
- Correnso Annual Stability Report 2015 [PDF, 2.4 MB]
- Correnso Annual Stability Report 2014 (2.15 MB)
Correnso/SUPA/Martha Filled/Unfilled Stopes & Seismic & Rock Movement Monitoring
Summary Explanation on Seismic & Rock Movement Monitoring (298 KB)
- Stopes, Seismic & Rock Monitoring report June 2022 [PDF, 581 KB]
- Stopes, Seismic & Rock Monitoring report May 2022 [PDF, 642 KB]
- Stopes, Seismic & Rock Monitoring report April 2022 [PDF, 589 KB]
- Stopes, Seismic & Rock Monitoring report March 2022 [PDF, 490 KB]
- Stopes, Seismic & Rock Monitoring report February 2022 [PDF, 540 KB]
- Stopes, Seismic & Rock Monitoring report January 2022 [PDF, 501 KB]
- Stopes, Seismic & Rock Monitoring report December 2021 [PDF, 478 KB]
- Stopes, Seismic & Rock Monitoring report November 2021 [PDF, 349 KB]
- Stopes, Seismic & Rock Monitoring report October 2021 [PDF, 341 KB]
- Stopes, Seismic & Rock Monitoring report September 2021 [PDF, 435 KB]
- Stopes, Seismic & Rock Monitoring report August 2021 [PDF, 341 KB]
- Stopes, Seismic & Rock Monitoring report July 2021 [PDF, 353 KB]
View earlier Stopes, Seismic & Rock Movement Monitoring reports
Social Impact Management Plan Reports
- Waihi Social Impact Management Plan 2019-2020 Monitoring Report [PDF, 1.4 MB]
- Correnso Social Impact Management Plan - 2018 Annual Report [PDF, 2.5 MB]
- Correnso Social Impact Management Plan – 2017 Annual Report [PDF, 2.2 MB]
- Correnso Social Impact Management Plan – 2016 Annual Report [PDF, 2.5 MB]
- Correnso Social Impact Management Plan – 2015 Annual Report [PDF, 1.5 MB]
Noise
- OGNZ Noise Report - 2nd Qtr 2022 [PDF, 254 KB]
- OGNZ Noise Report - 1st Qtr 2022 [PDF, 249 KB]
- OGNZ Noise Report - 4th Qtr 2021 [PDF, 211 KB]
- OGNZ Noise Report - 3rd Qtr 2021 [PDF, 207 KB]
- OGNZ Noise Report - 2nd Qtr 2021 [PDF, 207 KB]
- OGNZ Noise Report - 1st Qtr 2021
[PDF, 617 KB]
Vibration
- OGNZ Vibration Report - 2nd Qtr 2022 [PDF, 1.3 MB]
- OGNZ Vibration Report - 1st Qtr 2022 [PDF, 1.1 MB]
- OGNZ Vibration Report - 4th Qtr 2021 [PDF, 1.8 MB]
- OGNZ Vibration Report - 3rd Qtr 2021 [PDF, 1015 KB]
- OGNZ Vibration Report - 2nd Qtr 2021 [PDF, 783 KB]
- OGNZ Vibration Report - 1st Qtr 2021 [PDF, 1.3 MB]
View earlier Vibration Reports
Complaints
- Complaints and Concerns Report and Lists Jul - Dec 2021 [PDF, 1.2 MB]
- Complaints Report Jan - Jun 2021 [PDF, 554 KB]
- Complaints list Correnso Jan - Jun 2021 [PDF, 186 KB]
- Complaints list Martha Mine Jan - Jun 2021 [PDF, 113 KB]
- Complaints list Project Martha Jan - Jun 2021 [PDF, 129 KB]
- Concerns list Jul - Dec 2020 Jan - Jun 2021 [PDF, 126 KB]
View earlier Complaints Reports
Dewatering & Ground Settlement
- Dewatering & Settlement Report 2021 [PDF, 5.8 MB]
- Dewatering & Settlement Report 2020 Part 1 [PDF, 9 MB]
Dewatering & Settlement Report 2020 Part 2 [PDF, 7.7 MB] - Dewatering & Settlement Report 2019 [PDF, 8.3 MB]
- Dewatering & Settlement Report 2018 [PDF, 6.7 MB]
- Dewatering & Settlement Report 2017 [PDF, 9.7 MB]
- Dewatering & Settlement Report 2016 [PDF, 6.8 MB]
- Dewatering & Settlement Report 2015 [PDF, 5.3 MB]
- Dewatering & Settlement Report 2014 (7.15 MB)
- Dewatering & Settlement Report 2013 (6.05 MB)
- Dewatering & Settlement Report 2012 (5.23 MB)
Union Hill Heritage Features
- Union Hill Heritage Feature monitoring Report 2020 [PDF, 77 KB]
- Union Hill Heritage Feature monitoring Report 2019 [PDF, 1.1 MB]
- Union Hill Heritage Feature monitoring Report 2018 [PDF, 197 KB]
- Union Hill Heritage Feature monitoring Report 2017 [PDF, 274 KB]
- Union Hill Heritage Feature monitoring Report 2016 [PDF, 149 KB]
- Union Hill Heritage Feature monitoring Report 2015 [PDF, 67 KB]
- Union Hill Heritage Feature Monitoring Report 2014 (3.04 MB)
Trio Stability
- Trio Stability Report 2020 [PDF, 817 KB]
- Trio Stability Report 2019 [PDF, 682 KB]
- Trio Stability Report 2018 [PDF, 770 KB]
- Trio Stability Report 2017 [PDF, 590 KB]
- Trio Stability Report 2015-16 [PDF, 4.7 MB]
- Trio Stability Report 2014-15 (725 KB)
- Trio Stability Report 2013-14 (1.03 MB)
