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Page 1 OCR 0.916
———— !
4f-antam o

Until June 30, 2025, ANTAM's
total exploration cost totalled
to Rp107.68 billion (unaudited
preliminary figure), focusing
on gold, nickel and bauxite.

FOR MORE INFORMATION
PLEASE CONTACT:

Syarif Faisal Alkadrie
(Corporate Secretary)
Tel :(6221) 789 1234

Email : corsecoantam.com
Website : www.antam.com

Exploration Report

Jakarta, July 10, 2025

PT Aneka Tambang Tbk (ANTAM: IDX: ANTM: ASX: ATM) is
pleased to announce its exploration report for periods
ended June 30, 2025 in accordance with the Indonesia Stock
Exchange listing rules.

ANTAM's exploration activities until June 30, 2025 were
focused on gold, nickel and bauxite with total
unaudited preliminary cost of Rp107.68 billion.

GOLD
Until June 30, 2025, ANTAM conducted gold exploration
activities in Pongkor, West Java. In Pongkor, ANTAM

conducted in mine drilling (underground) and deep drilling
(surface).

NICKEL

ANTAM's nickel exploration until June 30, 2025 is conducted
in North Konawe and Pomalaa, Southeast Sulawesi.
In addition, exploration activities were also conducted on the
Mining Business Permits of  ANTAM's  subsidiary,
PT Sumberdaya Arindo (PT SDA), in Buli, North Maluku.

In the North Konawe area, activities carried out include
geological mapping, core sampling, core logging, grid
measurement & re-measurement, installation of predrill and
postdrill stakes, resistivity measurement, single tube drilling
and laboratory preparation and analysis.

In the Pomalaa area, activities included geological mapping,
core sampling, core logging, grid measurement &
re-measurement, installation of measuring stakes, single tube
drilling, as well as preparation and laboratory activities.

Meanmwhile, exploration activities in the Buli area by PT SDA
include core logging, grid & re-measurement, measurement
and installation of stakes, and single tube drilling.
Page 2 OCR 0.906
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“W antam “
Exploration Report

BAUXITE

Bauxite exploration activities until June 30, 2025 were conducted in Tayan, Landakand Mempawah
- Toho, West Kalimantan. In the Tayan area, the exploration activity was test pit excavation,
geological mapping, measurement with the installation of measuring stakes and test pit grid
traverse measurements. In the Mempawah - Toho area, the activities carried out were land
identification, measurement by installing pre-measured stakes and test pit grid traverse
measurements

Meanmhile, in Landak area, conducted land identification, geological mapping, excavation of wells,
measurement with the installation of measuring stakes and test pit grid traverse measurements.

ANTAM through the Geomin Unit undertakes integrated mineral exploration activities which
include area survey activities, geological exploration, geophysical exploration, geodesy survey,
drilling, physical and chemical analysis, calculation of mineral reserves and resources supported by
integrated Geographic Information System (GIS). Exploration activities conducted to ensure the
adeguacy of the Company's strategic mineral resources and reserves potential.

ANTAM'S EXPLORATION AREAS UNTIL JUNE 30, 2025

Bauxite:
| Tayan

Nickel:
Buli

Nickel: »
Pomalaa

Pongkor

The information in this report that relates to Exploration Results, Mineral Resources or Ore Reserves is
based on information compiled by Mr. Bronto Sutopo who isa Member of The Australasian Institute of
Mining and Metallurgy. Mr. Bronto Sutopo is a full-time employee of the company. Mr. Bronto Sutopo has
sufficient experience which is relevant to the style of mineralisation and type of deposit under
consideration and to the activity which he is undertaking to gualify as a Competent Person as defined in
the 2012 Edition of the 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore
Reserves'. Mr. Bronto Sutopo consents to the inclusion in the report of the matters based on his
information in the form and context in which it appears.

File

File Open PDF
Source IDX
Size0.56 MB
Published10 Jul 2025
Pages2
Characters3,935
Text sourceOCR
OCR confidence0.911

Names mentioned 6 people and organisations named in the text · linked when the evidence is strong

linked person Syarif Faisal Alkadrie p.1
linked org Aneka Tambang Tbk p.1 ×2
unresolved org Indonesia Stock Exchange p.1
unresolved org PT Sumberdaya Arindo p.1
unresolved org PT SDA p.1 ×2
unresolved person Bronto Sutopo p.2 ×4

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