Rio Tinto Chief Executive Jakob Stausholm said: “We built further momentum in our Pilbara iron ore business
for the quarter, and now expect to deliver shipments in the upper half of our guidance range for the year. The
ramp-up of the Oyu Tolgoi underground mine progressed ahead of plan, and we remain on track to more than
triple its copper production by the end of the decade. Production downgrades during the quarter highlight that
we still have much more to do elsewhere, as we roll out the Safe Production System to create stability and
achieve excellence across our global portfolio.
“We continued to take disciplined measures to grow in the materials the world needs for the energy transition,
also with investments to expand our low carbon aluminium production and underground copper production at
Kennecott.
“We are taking practical steps and making investments to decarbonise, being the first to convert an open pit
mine to renewable diesel at our Boron operations, signing a memorandum of understanding with Baowu to
explore decarbonisation of the steel value chain and delivering first production from our ground-breaking
BlueSmelting demonstration plant at Sorel-Tracy in Quebec in July.”
Production*
Q2
2023
vs Q2
2022
vs Q1
2023
H1
2023
vs H1
2022
Pilbara iron ore shipments (100% basis) Mt 79.1 -1 % -4 % 161.7 +7 %
Pilbara iron ore production (100% basis) Mt 81.3 +3 % +2 % 160.5 +7 %
Bauxite Mt 13.5 -5 % +12 % 25.6 -8 %
Aluminium kt 814 +11 % +4 % 1,598 +9 %
Mined copper (consolidated basis) kt 145 -1 % 0 % 290 -1 %
Titanium dioxide slag kt 303 +4 % +6 % 589 +4 %
IOC** iron ore pellets and concentrate Mt 2.1 -21 % -18 % 4.6 -8 %
*Rio Tinto share unless otherwise stated
**Iron Ore Company of Canada
Q2 2023 operational highlights and other key announcements
• Our all-injury frequency rate of 0.36 was a small increase from the second quarter of 2022 (0.35), and
from the prior quarter (0.35). Investigations are underway following significant process safety incidents.
There were two incidents at our Rio Tinto Iron and Titanium (RTIT) Sorel-Tracy complex which did not
result in injuries. The Kennecott operation experienced an escape of furnace gas during the
maintenance shut, where all treated people have been cleared. We are heightening our focus on
managing these risks and continue to prioritise the safety, health and wellbeing of our workforce, and
communities where we operate.
• Pilbara operations produced 81.3 million tonnes (100% basis) in the second quarter, 3% higher than the
second quarter of 2022 as Gudai-Darri achieved sustained nameplate capacity during the period.
Shipments were 79.1 million tonnes (100% basis), 1% lower than the corresponding period of 2022,
reflecting the impact of planned major maintenance at the Dampier port and a train derailment. With
continued operational improvements across the Pilbara system, and the implementation of the Safe
Production System, full year shipments are now expected to be in the upper half of the original 320 to
335 million tonne range.
• Bauxite production of 13.5 million tonnes was 5% lower than the second quarter of 2022 as our Weipa
operations were impacted by the higher-than-average first quarter rainfall, which continued to reduce pit
access and led to longer haul distances. Production was further affected by equipment downtime at
both Weipa and Gove. As a result, our bauxite full year production is expected to be at the lower end of
our 54 to 57 million tonne range, as we implement plans to recover lost production at both operations
through the remainder of the year.
• Aluminium production of 0.8 million tonnes was 11% higher than the second quarter of 2022 as we
benefited from the continued ramp-up of the Kitimat smelter. Recovery at the Boyne and Kitimat
smelters is progressing to plan with full ramp-up expected to be completed later in the year. All our
other smelters continued to demonstrate stable performance during the quarter.
Notice to ASX/LSE
Rio Tinto | Second quarter operations report 1
• On 12 June, we announced an investment of $1.1 billion to expand our AP60 aluminium smelter
equipped with low-carbon technology at Complexe Jonquière in Canada. The total investment includes
up to $113 million of financial support from the Quebec government. This expansion will coincide with
the gradual closure of potrooms at the Arvida smelter on the same site. While at our Alma smelter in
Lac-Saint-Jean, Quebec, we commenced construction to increase our capacity to cast low-carbon,
high-value aluminium billets.
• Mined copper production of 145 thousand tonnes (on a consolidated basis), was 1% lower than the
second quarter of 2022. We benefited from the continued ramp-up of the high grade underground mine
at Oyu Tolgoi. However, this benefit was more than offset by the continued operation of Kennecott’s
concentrator at reduced rates, as we recovered from a conveyor failure in March 2023, and unplanned
maintenance, and lower crusher and conveyor availability, at Escondida.
• Refined copper guidance has been reduced to 160 to 190 thousand tonnes (previously 180 to 210
thousand tonnes) and our copper C1 unit cost guidance has been raised to 180 to 200 US cents/lb
(from 160 to 180 US cents/lb) as completion of the rebuild of the Kennecott smelter is now expected in
September 2023 (previously August 2023). The extension of the rebuild is due to the addition of a full
rebuild of the flash converting furnace to the scope, which is expected to further improve asset stability
and process safety management.
• On 20 June, we announced $498 million of funding to deliver underground development and
infrastructure for an area known as the North Rim Skarn1
(NRS) at Kennecott. Production from the NRS
will commence in 2024 and is expected to ramp up over two years, to deliver ~250 thousand tonnes of
additional mined copper over the next 10 years
2
alongside open cut operations.
• Titanium dioxide slag production of 303 thousand tonnes was 4% higher than the second quarter of
2022, due to improved operational performance at our smelters. Notwithstanding, our RTIT Quebec
Operations experienced two incidents in separate furnaces in June and July which we are investigating.
Given these investigations and weaker market conditions, our full year production is expected to be at
the lower end of the 1.1 to 1.4 million tonne range.
• IOC production was 21% lower than the second quarter of 2022 as we lost ~3.5 weeks of production in
June, primarily due to wildfires in Northern Quebec, together with a slightly extended shutdown.
Operations have resumed, however our full year production guidance has been reduced to 10.0 to 11.0
million tonnes (previously 10.5 to 11.5 million tonnes), and remains subject to further disruption from fire
conditions.
• At our Rincon lithium project in Argentina, our $140 million estimate and schedule to develop the starter
plant remains under review in response to cost escalation.
• In the second quarter, we commenced deployment of the Safe Production System at a further two sites,
taking the total to 20 sites. The Safe Production System focuses on continuously improving safety,
strengthening employee engagement and sustainably lifting operational performance across our global
portfolio. While we still have a lot to do to see sustainable improvement, site deployments are rolling out
according to plan and we expect to be at the upper end of our range of four to eight new sites in 2023.
• On 13 June, we announced that Ivan Vella, Chief Executive, Aluminium, has accepted a new position
outside of Rio Tinto and will leave in December 2023. He will continue to lead Aluminium while a robust
process to identify his successor is undertaken but has stepped down from the Group’s executive
committee.
• We saw a cash outflow from an increase in working capital of circa $0.9 billion in the first half of 2023,
reflecting a build in blasted and mine stocks in the Pilbara to support overall system health, and higher
spares and stores (including seasonality due to the Diavik winter road). Payables were also lower due
to the timing of spend, and normal volatility in amounts due to JV partners and employees. Operating
cash flow was also impacted by lower dividends from Escondida during the first half ($0.3 billion in H1
2023; $0.6 billion in H1 2022).
All figures in this report are unaudited. All currency figures in this report are US dollars, and comments refer to
Rio Tinto’s share of production, unless otherwise stated.
1The NRS Mineral Resources and Ore Reserves, together with the Lower Commercial Skarn (LCS) Mineral Resources and Ore Reserves, form the
Underground Skarns Mineral Resources and Ore Reserves.
2This production target for 2023 to 2033 is underpinned 25% by Probable Ore Reserves, 9% by Indicated Resources, and 66% by Inferred Resources. Mined
copper is reported as total recoverable metal. These estimates of Mineral Resources and Ore Reserves were reported in a release dated 20 June 2023 titled
“Rio Tinto Kennecott Mineral Resources and Ore Reserves” (Table 1 Release) which is available on Rio Tinto's website at resources & reserves (riotinto.com),
and have been prepared by Competent Persons in accordance with the requirements of the Australasian Code for Reporting of Exploration Results, Mineral
Resources and Ore Reserves, 2012 (JORC Code) and the ASX Listing Rules.

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