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Oceanagold Reports Fourth Quarter 2019 Operational Results

Production Results

MEDIA RELEASE

30 January 2020

OCEANAGOLD REPORTS FOURTH QUARTER 2019 OPERATIONAL RESULTS

(All financial figures in US Dollars unless otherwise stated)

(MELBOURNE) OceanaGold Corporation ( TSX: OGC | ASX: OGC) (the “Company”) is pleased to release

its unaudited full year and fourth quarter 2019 production and costs for the year ended 31 December 2019,

in accordance with the Australian Securities Exchange (“ASX”) Listing Rule 5.1. Note that the numbers

contained in this document are unaudited and subject to finalisation. The Company will release its complete

2019 audited financial and operational results before TSX market open on Thursday February 20, 20 20

(Toronto Eastern Standard Time).

Key Highlights

• Gold production from the United States and New Zealand operations increased by nearly 20%

quarter-on-quarter on the back of stronger production from Haile and Macraes.

• Haile gold production increased by 26% quarter -on-quarter with 46,420 ounces produced in the

fourth quarter.

• Annual gold production of 470,601 ounces including 108,151 ounces produced in the fourth quarter,

in-line with revised 2019 consolidated production guidance of 460,000 to 480,000 ounces.

• Annual copper production of 10,255 tonnes of copper, in line with revised 2019 consolidated

production guidance of 10,000 to 11,000 tonnes.

• Full year 2019 All-In Sustaining Costs (“AISC”)1 of $1,061 per ounce including $980 per ounce in the

fourth quarter, compared to 2019 revised AISC guidance of $1,040 to $1,090 per ounce sold.

• Full year 2019 cash costs of $733 per ounce sold including $757 per ounce sold in the fourth quarter,

compared to revised 2019 guidance of $710 to $760 per ounce sold.

• Continued to advance Ma rtha Underground with approximately 830 metres of development and

construction of the raise bore between the 800-RL and 920-RL drives completed in the fourth quarter.

• Achieved a Total Recordable Injury Frequency Rate (“TRIFR”) of 3.6 per million hours worked

compared to 4.5 per million hours worked in 2018.

Mick Wilkes, President and CEO said, “ We are pleased to report a strong er quarter-on-quarter operating

performance from Macraes and Haile in particular. Despite the weather challenges we experienced and

worked through, Haile managed to achieve its annual production range by delivering a 26% increase in gold

production from the third quarter while continuing to demonstrate continuous productivity improvements and

lower unit costs.”

1 AISC are unaudited, consolidated figures.

“For 2019, the Haile process plant milled 3.2 million tonnes which met our expectations and is currently

operating at an annualised throughput rate of 3.5 million tonnes per annum. We will continue to push

throughput rates higher as we shift our focus to achieving better recoveries. We are pleased with the progress

made on the expansion of Haile throughout the year and have the right team in place to deliver further

efficiencies and lower unit costs while meeting our targets for the further ramp up in annual production.”

“In New Zealand, steady production at Waihi was complemented by a 20% quarter-on-quarter increase in

production from Macraes. We continued to advance dev elopment of the Martha Underground which we

expect will deliver first production in the second quarter of 2021 with a significant mine life that we expect will

take us into the next decade. The Waihi District Study is on track for completion in the first h alf of this year,

and we expect it to outline additional details including timelines, production rates and costs from the multiple

source feeds including Martha Underground and WKP.”

“Last year was challenging for us particularly in the Philippines. We continue to have positive engagement

with the National Government and we continue to see very strong support from our local communities. The

FTAA renewal is currently with the Office of the President for review, and we remain committed to providing

the market with updates related to the advancement of the renewal and other impacts related to Didipio’s

operating status.”

“We are focused on resolving the suspension of Didipio as soon as we can, executing at our operations and

the timely delivery of key proje cts. We are progressing and prioriti sing our robust project pipeline in New

Zealand and North America in accordance with our principle to always pursue opportunities that can deliver

strong economic returns.”

Table 1 – Fourth Quarter and Full Year Operational Results

Quarter ended 31 Dec 2019 Haile Didipio Waihi Macraes Consolidated

Q4 2019 Q3 2019

Gold Produced koz 46.4 0.4 15.8 45.5 108.2 107.5

Gold Sales koz 42.3 - 18.6 46.4 107.3 94.3

Average Gold Price US$/oz 1,497 - 1,476 1,485 1,404 1,414(2)

Copper Produced kt - 0.1 - - 0.1 2.3

Copper Sales kt - - - - - -

Average Copper Price US$/lb - - - - - -

Total Ore Mined kt 1,365 - 100 1,841 3,306 2,057

Tonnes Processed kt 863 23 97 1,466 2,449 3,026

Gold Grade Processed g/t 2.09 0.67 5.82 1.03 1.59 1.34

Gold Recovery % 80.0 89.9 86.7 81.6 86.4 82.4

Cash Costs US$/oz 772 - 646 788 757 828

All-In Sustaining Costs(1) US$/oz 1,014 - 741 1,039 980 1,122

Full Year 2019 Haile Didipio Waihi Macraes Consolidated

2019 2018

Gold Produced koz 146.1 83.9 68.1 172.5 470.6 533.3

Gold Sales koz 143.3 60.2 69.2 175.8 448.4 532.7

Average Gold Price US$/oz 1,415 - 1,392 1,391 1,360 1,268

Copper Produced kt - 10.3 - - 10.3 15.0

Copper Sales kt - 6.9 - - 6.9 14.5

Average Copper Price US$/lb - 2.84 - - 2.84 3.05

Total Ore Mined Kt 3,217 1,173 433 6,456 11,280 10,518

Tonnes processed Kt 3,204 2,656 435 5,917 12,212 12,219

Gold grade processed g/t 1.80 1.11 5.61 1.04 1.42 1.59

Recovery % 78.6 88.3 86.6 82.5 84.4 86.0

Cash Costs US$/oz 859 481 682 736 733 489

All-In Sustaining Costs(1) US$/oz 1,262 694 825 1,115 1,061 767

(1) AISC for each operation accounts for corporate general and administrative allocations

(2) Realised gains and losses on gold hedging are included in the consolidated average gold price.

For 2019, the Company achieved a TRIFR of 3.6 per million hours worked, which compares to 4.5 per million

hours worked in 2018. The improvement year-on-year reflects significant improvements in health and safety

performance at Haile and Macraes and continued reinforcement of strong health and safety behaviours

across the business.

On a consolidated basis, the Compa ny produced 470,601 ounces of gold for the full year 2019 , including

108,151 ounces in the fourth quarter. Gold production from Haile and the New Zealand operations increased

nearly 20% quarter-on-quarter. Copper production for 2019 was 10,255 tonnes while silver production was

385,853 ounces. Full year gold and copper production w ere within the Company’s revised 2019 production

guidance ranges.

The Company also achieved its revised 2019 cost guidance with AISC of $ 1,061 per ounce on sales of

448,430 ounces of gold and 6,901 tonnes of copper. The Company’s AISC for the fourth quarter was $980

per ounce on sales of 107, 330 ounces of gold and no copper sales . The AISC decreased 13% quarter -on-

quarter on lower costs across each operation and from higher gold sales.

Haile Gold Mine, United States

The Haile Gold Mine produced 146,131 ounces of gold, including 46,420 ounces in the fourth quarter. Haile

gold production increased 11% year -on-year as a result of higher mill feed which was partially offset by a

lower average grade. Quarter-on-quarter gold production increased 26% due largely to higher mill feed and

head grade and better gold recoveries.

AISC for the full year 2019 at Haile was $1,262 per ounce sold with costs significantly higher in the first half

of the year related to the weather impacts to the operation. Reported AISC at Haile includes $50 per ounce

in corporate general and administrative (“G&A”) allocations. For the fourth quarter, Haile’s reported AISC

was $1,014 per ounce sold of which $57 per ounce was allocated for corporate G&A.

Mining operations in the fourth quarter were focused on completing ore mining from Snake phase 1 while

continuing to mine ore from Red Hill. The Company continued to pre -strip Ledbetter phase 1 and Snake

phase 2 with ore mining from lower grade benches now taking place. In the fourth quarter, the Haile operation

mined 7.94 m illion tonnes of material including 1.37 million tonnes of ore representing quarter -on-quarter

increases of 5% and 104% respectively. Mining operations were supported by the increased number of larger

Komatsu 730-E haul trucks of which ten were operational as at the end of the year.

For the full year, the Haile operation processed 3.2 million tonnes of ore representing a 34% increase from

2018 and in-line with the Company’s ramp up plans. The year-on-year increase related to investments made

by the Company to debottleneck the process plant, which continues to achieve daily throughput rates that

annualise to over 3.5 million tonnes. A primary focus for plant operations in the first quarter of 2020 will be to

commission the final components of the new fine grinding circuit and achieve average gold recoveries in the

mid-80% range for the full year.

On the back of the upgraded fleet, workforce stability and productivity improvements, the Haile operation

reduced its mining unit costs by 11% quarter-on-quarter and 4 4% from the first quarter of 2019 . The

processing unit costs decreased 9% quarter -on-quarter and 12% from the first quarter of 2019. The AISC

and cash costs continued to trend lower with quarter-on-quarter decreases of 8% and 13% respectively and

decreases of 43% and 34% respectively from the first quarter of 2019.

Looking ahead, the Company expects increased gold production with continued decrease in AISC for 2020.

Production in the second half of the year is expected to deliver tw o-thirds of the year’s gold output at

significantly lower AISC than the first half. The variability in production and costs relate to mine sequencing

whereby mined and processed grades increase as the year progresses. The fourth quarter is expected to

deliver the highest production while the first quarter is expected to have the lowest production for the year.

The Company continues to enhanc e open pit operations by accelerating mining activities. The Company

expects to have 15 Komatsu 730 -E haul trucks in operation in the second quarter to support the mining

activities. For 2020, the Company will bring forward mining of the Haile and Mill Zone phase 2 pits, both

previously scheduled for mining in 2021. With enhanced open pit operations, the Company is furth er

optimising the Horseshoe underground design to incorporate a larger expected resource and longer mine

life, plus reviewing the mining method to potentially improve project economics. To achieve this , portal

development may be deferred to start in 2021.

Waihi Gold Mine, New Zealand

At Waihi, the operation produced 68,082 ounces of gold, including 15,778 ounces in the fourth quarter, which

was relatively flat quarter-on-quarter. For the year, AISC was $82 5 per ounce on sales of 69, 186 ounces of

gold and $741 per ounce on sales of 18,649 ounces of gold in the fourth quarter . Waihi’s reported full year

AISC includes approximately $72 per ounce in corporate G&A allocations. For the fourth quarter, corporate

G&A allocations accounted for $75 per ounce of the reported AISC.

Looking ahead, mining from Correnso Deeps is expected to be completed in the first quarter with processing

temporarily shutting down at that point . Mining of narrow veins in the Correnso area will continue for the

duration of the year with this ore stockpiled ahead of processing in the fourth quarter. Following completion

of processing of this ore, the process plant will be shut down temporarily and is expected to restart in the

second quarter of 202 1 with ore sourced exclusively from Ma rtha Underground. The Waihi operation is

expected to produce approximately 12,000 ounces of gold in the first quarter of 2020 with an additional 8,000

ounces in the fourth quarter. The Waihi district study is currently underway and expected to be completed in

the first half of 2020. This preliminary economic assessment will provide longer-term production rates, costs

and schedules related to the Waihi District, including Martha Underground and WKP.

Macraes, New Zealand

At Macraes, the operation produced 172,475 ounces of gold, including 45,505 ounces in the fourth quarter.

The 20% quarter-on-quarter increase in production was attributable to a higher head grade from Coronation

stage 5 and the Frasers Underground . AISC was $1,115 per ounce on sales of 175, 819 ounces of gold for

the full year and $1,039 per ounce of sales o n 46,355 ounces of gold sold in the fourth quarter . Macraes

reported full year AISC includes approximately $57 per ounce in corporate G&A allocations. For the fourth

quarter, corporate G&A allocations accounted for $63 per ounce of the reported AISC.

Looking ahead, the Company expects steady production and flat AISC from Macraes while plans to increase

the mine life are progressing well. The Company is currently working on a pre -feasibility study in relation to

an underground mine at Golden Point and expects to complete this study in the second half of 2020.

Didipio, Philippines

In the Philippines, Didipio produced 83,913 ounces of gold and 10,255 tonnes of copper in 2019 before

processing was suspended in October. The Company continues to work constructively with regulatory

stakeholders related to the renewal o f Didipio’s FTAA, which is currently under review with the Office of the

President with no specific timeline on when a decision will be made. The mine currently remains in a state of

operational readiness.

The Didipio operation continues to receive strong community support. A community coalition comprising

Indigenous Peoples from the host community of Didipio and 10 adjacent communities ha ve held numerous

rallies to demonstrate their support for the continued operation of the mine. The most recent, held at

Malacañang (the Presidential Palace) in Manila.

Full Year Results and Webcast

The Company will release its financial and operational results for the fourth quarter and full year ending 31

December 2019 before the TSX market open on Thursday February 20, 2020 (Toronto, Canada time). The

results will be posted on OceanaGold’s website at www.oceanagold.com

The Company will host a conference call / webcast to discuss the results at 8:30 am on Friday February 21,

2020 (Melbourne, Australia Time) / 4:30 pm on Thursday February 20, 2020 (Toronto, Canada time).

Webcast Participants

To register, please copy and paste the link below into your browser:

https://event.on24.com/wcc/r/2176515/C9CEED65CE90A57B28C14F899D74EC51

Teleconference Participants (required for those who wish to ask questions)

Local (toll free) dial in numbers are:

Canada & North America: 1 888 390 0546

Australia: 1 800 076 068

New Zealand: 0 800 453 421

United Kingdom: 0 800 652 2435

Switzerland: 0 800 312 635

All other countries (toll): + 1 416 764 8688

Playback of Webcast

If you are unable to attend the call, a recording will be available for viewing on the Company’s website.

- ENDS -

For further information please contact:

Investor Relations Media Relations

Sam Pazuki

Tel: +1 720 602 4880

[email protected]

Melissa Bowerman

Tel: +61 407 783 270

[email protected]

www.oceanagold.com | Twitter: @OceanaGold

About OceanaGold

OceanaGold Corporation is a mid -tier, high-margin, multinational gold producer with assets located in the

Philippines, New Zealand and the United States. The Company’s assets encompass the Didipio Gold-Copper

Mine located on the island of Luzon in the Phil ippines. On the North Island of New Zealand, the Company

operates the high-grade Waihi Gold Mine while on the South Island of New Zealand, the Company operates

the largest gold mine in the country at the Macraes Goldfield which is made up of a series of op en pit mines

and the Frasers underground mine. In the United States, the Company operates the Haile Gold Mine, a top-

tier, long-life, high-margin asset located in South Carolina. OceanaGold also has a significant pipeline of

organic growth and exploration opportunities in the Americas and Asia-Pacific regions.

OceanaGold has operated sustainably since 1990 with a proven track-record for environmental management

and community and social engagement. The Company has a strong social license to operate and work s

collaboratively with its valued stakeholders to identify and invest in social programs that are designed to build

capacity and not dependency.

In 2019, the Company produce d 470,601 ounces of gold and 10, 255 tonnes of copper at All -In Sustaining

Costs of $1,061 per ounce sold.

Cautionary Statement for Public Release

Certain information contained in this public release may be deemed “forward -looking” within the meaning of

applicable securities laws. Forward -looking statements and information relate to fu ture performance and

reflect the Company’s expectations regarding the generation of free cash flow, execution of business

strategy, future growth, future production, estimated costs, results of operations, business prospects and

opportunities of OceanaGold Corporation and its related subsidiaries. Any statements that express or involve

discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions or

future events or performance (often, but not always, using word s or phrases such as "expects" or "does not

expect", "is expected", "anticipates" or "does not anticipate", "plans", "estimates" or "intends", or stating that

certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved) are

not statements of historical fact and may be forward -looking statements. Forward -looking statements are

subject to a variety of risks and uncertainties which could cause actual events or results to differ materially

from those expressed in the forward-looking statements and information. They include, among others, the

accuracy of mineral reserve and resource estimates and related assumptions, inherent operating risks and

those risk factors identified in the Company’s most recent Annual Info rmation Form prepared and filed with

securities regulators which is available on SEDAR at www.sedar.com under the Company’s name. There are

no assurances the Company can fulfil forward -looking statements and information. Such forward -looking

statements and information are only predictions based on current information available to management as

of the date that such predictions are made; actual events or results may differ materially as a result of risks

facing the Company, some of which are beyond the Compa ny's control. Although the Company believes

that any forward-looking statements and information contained in this press release is based on reasonable

assumptions, readers cannot be assured that actual outcomes or results will be consistent with such

statements. Accordingly, readers should not place undue reliance on forward -looking statements and

information. The Company expressly disclaims any intention or obligation to update or revise any forward-

looking statements and information, whether as a result of new information, events or otherwise, except as

required by applicable securities laws. The information contained in this release is not investment or financial

product advice.

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