For immediate release, 20 May 2015

Antofagasta plc (the "Company") Results of Annual General Meeting

At today's Annual General Meeting, a poll was held on each of the resolutions proposed in the Notice of

Meeting dated 16 March 2015.

The results of the polls are:

Resolution Votes For

(1) Adopt the 2014 Annual Report

Votes

Against

Votes Cast as

% of Issued Share Capital

Votes withheld

and Financial Statements 1,059,530,270 10,907 89.35% 79,128

100.00% 0.00%

(2) Approve the 2014 Remuneration
Report 1,049,760,797 9,754,030 89.35% 105,477

99.08% 0.92%

(3) Declare a final dividend 1,059,554,171 0 89.35% 64,983

100.00% 0.00%

(4) Re-elect Jean-Paul Luksic as a
Director 1,042,361,880 17,051,339 89.34% 205,934

98.39% 1.61%

(5) Re-elect William Hayes as a
Director 1,058,884,826 520,862 89.34% 213,465

99.95% 0.05%

(6) Re-elect Gonzalo Menendez as a
Director 1,050,075,469 9,474,853 89.35% 68,831

99.11% 0.89%

(7) Re-elect Ramon Jara as a
Director 1,045,373,466 14,176,856 89.35% 68,831

98.66% 1.34%

(8) Re-elect Juan Claro as a Director 1,052,819,622 6,730,400 89.35% 69,131

99.36% 0.64%

(9) Re-elect Hugo Dryland as a
Director 1,043,428,285 16,123,370 89.35% 68,649

98.48% 1.52%

(10) Re-elect Tim Baker as a Director
(11) Re-elect Ollie Oliveira as a
1,059,035,202 517,272 89.35% 67,831

99.95% 0.05%

Director 1,059,026,803 518,671 89.35% 74,831

99.95% 0.05%

(12) Re-elect Andronico Luksic as a
Director 1,008,121,257 49,980,771 89.23% 1,518,275

95.28% 4.72%

(13) Re-elect Vivianne Blanlot as a
Director 1,059,242,238 310,718 89.35% 67,349

99.97% 0.03%

(14) Re-elect Jorge Bande as a
Director 1,059,478,072 73,402 89.35% 68,831

99.99% 0.01%

(15) Appoint PricewaterhouseCoopers
LLP as auditors 1,059,492,275 61,622 89.35% 66,408

99.99% 0.01%

(16) Authorise the Directors to fix the
auditor's remuneration 1,059,506,976 46,064 89.35% 67,265

100.00% 0.00%

(17) Grant Directors authority to allot
securities 1,039,810,962 18,566,392 89.25% 1,242,951

98.25% 1.75%

(18) Grant Directors authority to allot securities for cash other than on a
pro rata basis to shareholders 1,056,567,047 1,937,529 89.26% 1,115,729

99.82% 0.18%

(19) Authorise purchase of own shares 1,057,737,004 779,213 89.26% 1,104,088

99.93% 0.07%

(20) Permit general meetings to be called on not less than 14 days'
clear notice 1,025,102,247 34,452,904 89.35% 65,153

96.75% 3.25%

VOTES EXCLUDING CONTROLLING SHAREHOLDERS ON THE RESOLUTIONS CONCERNING THE ELECTION OR RE-ELECTION OF THE INDEPENDENT NON-EXECUTIVE DIRECTORS

Resolution Votes For

Votes

Against

Votes Cast as

% of Issued Share Capital (excluding controlling

shareholders)

Votes withheld

(5) Re-elect William Hayes as a
Director 228,232,696 520,862 65.34% 213,465

99.77% 0.23%

(10) Re-elect Tim Baker as a Director 228,383,072 517,272 65.38% 67,831

99.77% 0.23%

(11) Re-elect Ollie Oliveira as a
Director 228,374,673 518,671 65.38% 74,831

99.77% 0.23%

(13) Re-elect Vivianne Blanlot as a
Director 228,590,108 310,718 65.38% 67,349

99.86% 0.14%

(14) Re-elect Jorge Bande as a
Director

Notes to the poll results

1. Any proxy votes that were at the discretion of the Chairman are included in the total of "votes for" each resolution.

2. Percentages of votes for and votes against each resolution are included on the basis of votes cast and therefore exclude abstentions.

3. The Company had in issue 985,856,695 Ordinary Shares carrying one vote each, and 2,000,000 5% Cumulative Preference Shares carrying 100 votes each. Accordingly, the total number of votes available was 1,185,856,695 votes and the total number of votes available excluding the controlling shareholders was 538,325,690 votes at the Annual General Meeting.

These results will be published within "press releases" in the media section of the website of Antofagasta plc, www.antofagasta.co.uk.

In accordance with Listing Rule 9.6.2, copies of resolutions 17, 18, 19 and 20 passed at the Annual General

Meeting will be submitted to the UKLA today and will shortly be available for inspection via the National

Storage Mechanism, www.hemscott.com/nsm.do, which can be searched by company name together with filing date and/or document type.

Investors - London Public Relations Advisors - London