Antofagasta : Financial Reporting Document

Bank of America

Global Metals, Mining & Steel Virtual Conference

Iván Arriagada | Chief Executive Officer

17th May 2022

Developing mining for a better future

Cautionary statement

This presentation has been prepared by Antofagasta plc. By reviewing and/or attending this presentation you agree to the following conditions:

This presentation contains forward-looking statements. All statements other than historical facts are forward-looking statements. Examples of forward- looking statements include those regarding the Group's strategy, plans, objectives or future operating or financial performance; reserve and resource estimates; commodity demand and trends in commodity prices; growth opportunities; and any assumptions underlying or relating to any of the foregoing. Words such as "intend", "aim", "project", "anticipate", "estimate", "plan", "believe", "expect", "may", "should", "will", "continue" and similar expressions identify forward-looking statements. Forward-looking statements involve known and unknown risks, uncertainties, assumptions and other factors that are beyond the Group's control. Given these risks, uncertainties and assumptions, actual results could differ materially from any future results expressed or implied by these forward-looking statements, which apply only as of the date of this presentation. Important factors that could cause actual results to differ from those in the forward-looking statements include: global economic conditions; demand, supply and prices for copper; long-term commodity price assumptions, as they materially affect the timing and feasibility of future projects and developments; trends in the copper mining industry and conditions of the international copper markets; the effect of currency exchange rates on commodity prices and operating costs; the availability and costs associated with mining inputs and labour; operating or technical difficulties in connection with mining or development activities; employee relations; litigation; and actions and activities of governmental authorities, including changes in laws, regulations or taxation. Except as required by applicable law, rule or regulation, the Group does not undertake any obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Certain statistical and other information about Antofagasta plc included in this presentation is sourced from publicly available third party sources. Such information presents the views of those third parties and may not necessarily correspond to the views held by Antofagasta plc.

This presentation is for information purposes only and does not constitute an offer to sell or the solicitation of an offer to buy shares in Antofagasta plc or any other securities in any jurisdiction. Further it does not constitute a recommendation by Antofagasta plc or any other person to buy or sell shares in Antofagasta plc or any other securities.

Past performance cannot be relied on as a guide to future performance.

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Our purpose Developing mining for a better future

CULTURE

Shared values and the way we work

STRATEGY

People

Safety & Sustainability

Competitiveness

PEOPLE

Growth

Innovation

ORGANISATION

Designed to deliver results and growth

Antofagasta plc | 2022 BofA Global Metals, Mining & Steel Conference

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Safety and health

Our top priority

A fatality after

High Potential

Safety performance: Fatalities, HPI and LTIFR

	316
		217
			86	65
1.53	1.59			1.34	13
				1.06
		1.01	0.86
	1			1
2017	2018	2019	2020	2021	Q1
	Fatalities			2022

Lost Time Injury Frequency Rate (LTIFR)1

33 months

Incidents

High Potential Incidents (HPI)

decreased by 24%

1 LTIFR: the number of lost time injuries per 1 million hours worked

Antofagasta plc | 2022 BofA Global Metals, Mining & Steel Conference

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2022 Performance and guidance

Drought impact continues at Los Pelambres

Copper production

Los Pelambres

Forecast

Cash costs

+$0.35/lb	1.75
0.10	$1.55/lb

164

178

0.14

0.11

147

99

115

$1.20/lb

0.66 0.65 0.68 0.66 0.63

H1 21

H2 21

Q1 22

H1 22

H2 22

Throughput (ktpd) Grade (%)

Centinela		Forecast
161	165	159	163	164
0.60	0.63	0.65	0.64	0.74
0.59	0.61
		0.44	0.48	0.51
H1 21	H2 21	Q1 22	H1 22	H2 22

Throughput (ktpd)	Grade Cathodes (%)
Grade Concentrate (%)

Net cash	Lower copper	Lower by-	Higher	Net cash	Net cash
costs	production	product	input prices	costs	costs
FY 2021		production		2022E	Q1 2022

and price

Production

• Guidance for the year is unchanged: 660-690,000 tonnes
• Copper production is expected to increase quarter-on-quarter throughout the year

Net cash costs

• Guidance unchanged at $1.55/lb

Capital expenditure

• Expected to be $1.9 billion, at the top end of the original guided range

Antofagasta plc | 2022 BofA Global Metals, Mining & Steel Conference

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