OceanaGold Extends Mineralization 200 Metres on the Top-Grade Wharekirauponga Attic

• 9.9 g/t Au over 20.3 m from 410.0 m, EG Vein (WKP129A, conversion)
• 19.4 g/t Au over 7.1 m from 398.0 m, EG HWS Vein (WKP129A, conversion)
• 34.5 g/t Au over 3.8 m from 573.0 m, EG Vein (WKP130A, extension)
• 12.8 g/t Au over 5.6 m from 569.1 m, EG Vein (WKP130, extension)
• 14.2 g/t Au over 3.0 m from 497.1 m, EG Vein (WKP131, extension)
• 5.6 g/t Au over 8.3 m from 644.7 m, EG Vein (WKP130B, extension)

Gerard Bond, President & CEO of OceanaGold, mentioned “Today’s drill results demonstrate a growing high-grade system where the EG Vein extends for at least another 200 metres along strike at WKP. In recent years, we have been focused on infill drilling, so it is very exciting to be able to again demonstrate the growth potential and continuity of high-grade mineralization which remains open in multiple directions.  Successful commissioning of an additional drill site in March 2024 has enabled better drill access to further test potential extensions of the resource throughout the remainder of 2024 and beyond.”

Effects Evaluate

For the reason that March 7, 2024 WKP information leave, drilling has persisted to intersect vital mineralization in all 11 holes at the East Graben (EG) vein and related hanging-wall and foot-wall veins (EG vein gadget) within the high-grade southern zone (Desk 1, Figures 1 and a pair of).

Extensional Drilling

In overdue March 2024, drill website 9 used to be commissioned which has enabled drilling of the southern collision extension of the EG vein gadget (Determine 1). Two holes (WKP134 and WKP132) have been drilled from the unutilized drill website. WKP134 examined up-dip of the southernmost gap around the EG vein and continues to reveal magnificient vein width and grade, with additional expansion alternatives extra up-dip and along-strike to the south at the construction. This result’s ~200 metres clear of the southern extent of the wave useful resource (Determine 2).

There have been 4 useful resource extension holes drilled from drill website 8 and an additional 4 useful resource extension holes from drill website 1 (Determine 1), all of which intersected vital mineralization and reveal robust grade and structural endurance alongside collision of the prevailing useful resource (Determine 2, Desk 1). Alternative alternatives stay for up-plunge, down-plunge, and along-strike extensions of the EG vein gadget with all intercepts extra visible to the south over a vertical window of roughly 200 metres. The EG vein gadget residue the principle, near-term drill goal for the 2024 21-hole expansion and conversion program, with the T-Wave and Western Vein goals providing related expansion doable and warrant past backup drilling (Determine 1).

Useful resource Conversion Drilling

Every other useful resource conversion drillhole, WKP129A, used to be finished from drill website 1 and returned magnificient effects (9.9 g/t Au over 20.3 metres (true width) and 19.4 g/t Au over 7.1 metres (true width). This gap helps the style with vital grade and width, to bring about a ~150 metre collision of high-grade mineralization extra visible up-dip for additional checking out.

2024 Exploration Program

Exploration drilling for the left-overs of the 2024 program will goal useful resource expansion from drill websites 8 and 9, checking out past the wave southern extent of drilling, and up-dip of each wave and past extension holes within the south. The NI 43-101 pre-feasibility learn about, scheduled for leave by way of the tip of the yr, will probably be in line with an period in-between useful resource style with drillhole information as of the tip of Would possibly 2024. Next drill effects will probably be captured in an end-of-year useful resource style replace to be immune with the 2024 Annual Retain and Useful resource observation early upcoming yr.

For maps and categories see Figures 1-3 and Desk 1 for complete effects.

Desk 1: WKP drill intersections next to the March 7, 2024 exploration replace

For additional data in relation to drill gap information for WKP, please the following the Corporate’s website online at https://investors.oceanagold.com/additional-drillhole-data.

About WKP and the Waihi North Undertaking

The WKP low-sulphidation epithermal Au-Ag vein gadget is positioned roughly 10 kilometres north of the Corporate’s Waihi operation. The WKP Indicated Useful resource stands at 2.0 million tonnes grading 15.9 g/t Au for 1.01 million oz of gold with an additional 1.2 million tonnes grading 9.0 g/t Au for 0.35 million oz of gold within the Inferred section as of December 31, 2023.

WKP is a part of the Waihi North Undertaking, which has the possible to build vital socio-economic contributions for the communities within the Waihi pocket and for Pristine Zealand. This contains vital in-country investments and a considerable build up to direct and oblique business alternatives, with the undertaking having the possible to increase operation of the Waihi mine past the upcoming decade. OceanaGold operates to the easiest environmental and social requirements which has enabled it to run a a hit and accountable mining trade in Pristine Zealand for over 3 a long time. The Corporate has lodged a useful resource consent utility for its proposed Waihi North Undertaking with Hauraki District Council and Waikato Regional Council and has additionally sought referral of the undertaking to the proposed “fast-track” procedure.

About OceanaGold

OceanaGold is a rising intermediate gold and copper manufacturer dedicated to soundly and responsibly maximizing the month of Independent Money Current from our operations and turning in robust returns for our shareholders. We’ve got a portfolio of 4 running mines: the Haile Gold Mine in the USA of The us; Didipio Mine in the Philippines; and the Macraes and Waihi operations in Pristine Zealand. For additional data please touch:

Property Promise and Property Keep watch over (QA/QC) at Wharekirauponga, Waihi Gold Mine

All exploration samples are assayed for gold by way of 30g fireplace assay with AAS end. Since mid-2022 drill core pattern periods the place sight electrum is logged are adopted up by way of a next display screen fireplace assay then the regimen 30g fireplace assay. Holes WKP40-45 had core samples shipped for pattern preparation to SGS in Westport (Pristine Zealand). Ready pulps have been later shipped to detached Australian Laboratory Services and products Pty Ltd (ALS) in Brisbane, permitted to ISO/NATA 17025 for gold research by way of fireplace assay and 4-acid digest, and 42 component ICP geochemical research. Holes drilled then WKP45 (i.e., WKP46 to WKP134) have been ready and analyzed at SGS Waihi NZ Ltd (Au by way of 30g fireplace assay and Ag by way of H2O regia digest and nil.3gm AAS end). Decided on pulps are periodically despatched to ALS in Brisbane for a 4-acid digestion and 42 or 48 component ICP geochemical research.

Property of exploration assay effects has been monitored in please see grounds:

• Pattern preparation on the SGS Waihi and Westport labs thru sieving of jaw weigh down and pulp merchandise.
• Tracking of assay precision thru regimen month of replica samples from a 2d crack of the jaw weigh down and calculation of the basic error.
• Tracking of accuracy of the principle SGS assay and ALS effects thru insertion Qualified Reference Fabrics (CRM’s) and blanks into pattern batches.

Emptied, replica and CRM effects are reviewed previous to importing ends up in the AcQuire database and once more on a weekly foundation. The protocol at Waihi calls for CRMs to be reported to inside of 2 same old deviations of the qualified price. The criterion for preparation duplicates is that they have got a relative excess (R-R1/ruthless RR1) of disagree more than 10%. Blanks will have to now not exceed greater than 4 instances the decrease detection price of the assay form. Failure in any of those thresholds triggers an investigation and if suitable re-assay. Drill core is saved inside of store amenities on website to which get right of entry to is managed. Website online workers delivery samples to the analytical laboratory which may be a fix facility. The SGS Waihi NZ Ltd laboratory is an detached industrial geochemistry and effort assay laboratory with ISO 17025: 2017 accreditation, audited by way of an exterior guide in 2020, and is inspected on an annual foundation by way of OceanaGold geologists. Negative sampling dangers had been recorded all through those visits.

Certified Individual Observation

The exploration ends up in this press leave have been ready according to Nationwide Device 43-101 – Requirements of Disclosure for Mineral Tasks of the Canadian Securities Directors (“NI 43-101”).  

Data in relation to Waihi exploration ends up in this report has been verified by way of, is in line with and moderately represents data compiled by way of or ready beneath the supervision of Leroy Crawford-Flett, a Chartered Skilled Member of the Australasian Institute of Mining and Metallurgy and an worker of OceanaGold. Mr Crawford-Flett has ample revel in this is related to the manner of mineralization and form of storage into consideration and to the job being undertaken to qualify as Certified Individuals for the needs of the NI 43-101. Mr Crawford-Flett has the same opinion to the inclusion on this population file of the issues in line with their data within the mode and context by which apparently.

Technical Stories

For additional data, please the following please see NI 43-101 compliant technical file to be had at the SEDAR+ website online at www.sedarplus.com beneath the Corporate’s title and the Corporate’s information leave titled “OceanaGold Reports Mineral Reserves and Resources for the Year Ended 2023” dated February 21, 2024:

Cautionary Observation for Nation Let go

Positive data contained on this population leave is also deemed “forward-looking” throughout the that means of acceptable securities regulations. Ahead-looking statements and knowledge relate to past efficiency and replicate the Corporate’s expectancies in regards to the month of detached money wave, execution of commercial technique, past expansion, past manufacturing, estimated prices, result of operations, trade possibilities and alternatives of OceanaGold Company and its homogeneous subsidiaries. Any statements that categorical or contain discussions with appreciate to predictions, expectancies, ideals, plans, projections, goals, guesses or past occasions or efficiency (steadily, however now not all the time, the use of phrases or words equivalent to “expects” or “does not expect”, “is expected”, “anticipates” or “does not anticipate”, “plans”, “estimates” or “intends”, or pointing out that sure movements, occasions or effects “may”, “could”, “would”, “might” or “will” be taken, happen or be completed) don’t seem to be statements of historic reality and is also forward-looking statements. Ahead-looking statements are topic to plenty of dangers and uncertainties which might motive latest occasions or effects to range materially from the ones expressed within the forward-looking statements and knowledge. They come with, amongst others, the accuracy of mineral secure and useful resource estimates and homogeneous guesses, inherent running dangers and the ones chance elements known within the Corporate’s most up-to-date Annual Data Method ready and filed with securities regulators which is to be had on SEDAR+ at www.sedarplus.com beneath the Corporate’s title. There are not any commitments the Corporate can fulfil forward-looking statements and knowledge. Such forward-looking statements and knowledge are handiest predictions in line with wave data to be had to control as of the month that such predictions are made; latest occasions or effects might range materially on account of dangers going through the Corporate, a few of which can be past the Corporate’s regulate.  Even supposing the Corporate believes that any forward-looking statements and knowledge contained on this press leave is in line with affordable guesses, readers can’t be confident that latest results or effects will probably be in line with such statements. Accordingly, readers will have to now not playground undue reliance on forward-looking statements and knowledge. The Corporate expressly disclaims any aim or legal responsibility to replace or revise any forward-looking statements and knowledge, whether or not on account of unutilized data, occasions or differently, except for as required by way of acceptable securities regulations. The tips contained on this leave isn’t funding or monetary product recommendation.  

SOURCE OceanaGold Company