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 Location of Underground Workings - Monthly Mine Development Plan
- Correnso Stability
- Correnso/SUPA Filled/Unfilled Stopes & Seismic & Rock Movement Monitoring
- Correnso Social Impact Management Plan – 2015 Annual Report
- 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.
Correnso/SUPA Location of Underground Workings
Monthly Mine Development Plan
Explanation of verification of the location of underground workings to the surface (97 KB)
- The East Ender December 2020 [PDF, 1.2 MB] [PDF, 1.2 MB]
- The East Ender November 2020 [PDF, 1.1 MB]
- The East Ender October 2020 [PDF, 803 KB]
- The East Ender September 2020 [PDF, 921 KB]
- The East Ender August 2020 [PDF, 1021 KB]
- The East Ender July 2020 [PDF, 1.5 MB]
- The East Ender June 2020 [PDF, 1.3 MB]
- The East Ender May 2020 [PDF, 1.2 MB]
- The East Ender April 2020 unavailable due to Covid-19
- The East Ender March 2020 [PDF, 651 KB]
- The East Ender February 2020 [PDF, 2 MB]
- The East Ender January 2020 [PDF, 2.9 MB]
- The East Ender December 2019 [PDF, 2.6 MB]
- The East Ender November 2019 [PDF, 3.7 MB]
- The East Ender October 2019 [PDF, 2.8 MB]
- The East Ender September 2019 [PDF, 3.1 MB]
- The East Ender August 2019 [PDF, 1.8 MB]
- The East Ender July 2019 [PDF, 2.7 MB]
- The East Ender June 2019 [PDF, 1.7 MB]
View earlier Underground Workings reports
Annual Mine Land Stability Reports
- 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 Filled/Unfilled Stopes & Seismic & Rock Movement Monitoring
Summary Explanation on Seismic & Rock Movement Monitoring (298 KB)
- Stopes, Seismic & Rock Monitoring report December 2020 [PDF, 273 KB]
- Stopes, Seismic & Rock Monitoring report November 2020 [PDF, 272 KB]
- Stopes, Seismic & Rock Monitoring report October 2020 [PDF, 254 KB]
- Stopes, Seismic & Rock Monitoring report September 2020 [PDF, 289 KB]
- Stopes, Seismic & Rock Monitoring report August 2020 [PDF, 273 KB]
- Stopes, Seismic & Rock Monitoring report July 2020 [PDF, 270 KB]
- Stopes, Seismic & Rock Monitoring report June 2020 [PDF, 270 KB]
- Stopes, Seismic & Rock Monitoring report May 2020 [PDF, 287 KB]
- Stopes, Seismic & Rock Monitoring report April 2020 [PDF, 268 KB]
- Stopes, Seismic & Rock Monitoring report March 2020 [PDF, 260 KB]
- Stopes, Seismic & Rock Monitoring report February 2020 [PDF, 268 KB]
- Stopes, Seismic & Rock Monitoring report January 2020 [PDF, 269 KB]
- Stopes, Seismic & Rock Monitoring report December 2019 [PDF, 326 KB]
- Stopes, Seismic & Rock Monitoring report November 2019 [PDF, 315 KB]
- Stopes, Seismic & Rock Monitoring report October 2019 [PDF, 316 KB]
- Stopes, Seismic & Rock movement report September 2019 [PDF, 316 KB]
- Stopes, Seismic & Rock movement report August 2019 [PDF, 325 KB]
- Stopes, Seismic & Rock movement report July 2019 [PDF, 331 KB]
View earlier Stopes, Seismic & Rock Movement Monitoring reports
Correnso Social Impact Management Plan – Annual Reports
- 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 - 3rd Qtr 2020 [PDF, 210 KB]
- OGNZ Noise Report - 2nd Qtr 2020 [PDF, 212 KB]
- OGNZ Noise Report - 1st Qtr 2020 [PDF, 199 KB]
- OGNZ Noise Report - 4th Qtr 2019 [PDF, 197 KB]
- OGNZ Noise Report - 3rd Qtr 2019 [PDF, 199 KB]
- OGNZ Noise Report - 2nd Qtr 2019 [PDF, 352 KB]
Vibration
- OGNZ Vibration Report - 3rd Qtr 2020 [PDF, 825 KB]
- OGNZ Vibration Report - 2nd Qtr 2020 [PDF, 884 KB]
- OGNZ Vibration Report - 1st Qtr 2020 [PDF, 801 KB]
- OGNZ Vibration Report - 4th Qtr 2019 [PDF, 838 KB]
- OGNZ Vibration Report - 3rd Qtr 2019 [PDF, 841 KB]
- OGNZ Vibration Report - 2nd Qtr 2019 [PDF, 1.3 MB]
- OGNZ Vibration Report - 1st Qtr 2019 [PDF, 1.2 MB]
View earlier Vibration Reports
Complaints
- Complaints report Jan - Jun 2020 [PDF, 506 KB]
- Complaints list Jan - Jun 2020 [PDF, 236 KB]
- Concerns list Jan - Jun 2020 [PDF, 150 KB]
- Complaints report Jul - Dec 2019 [PDF, 546 KB]
- Complaints list Jul - Dec 2019 [PDF, 195 KB]
- Concerns list Jul - Dec 2019 [PDF, 69 KB]
- Complaints report Jan - Jun 2019 [PDF, 556 KB]
- Complaints list Jan - Jun 2019 [PDF, 200 KB]
- Concerns list Jan - Jun 2019 [PDF, 73 KB]
View earlier Complaints Reports
Dewatering & Ground Settlement
- 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 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)
