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20260109_ANTM_Laporan Bulanan Aktivitas Eksplorasi_32018829_lamp2.pdf
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Exploration Report
Until December 31, 2025, Jakarta, January 9, 2026
ANTAM’s total exploration
preliminary unaudited cost of PT Aneka Tambang Tbk (ANTAM; IDX: ANTM; ASX: ATM) is
Rp245.76 billion focusing on pleased to announce its exploration report for periods ended
gold, nickel and bauxite. December 31, 2025 in accordance with the Indonesia Stock
Exchange listing rules.
ANTAM’s exploration activities until December 31, 2025 were
focused on gold, nickel and bauxite with total unaudited
preliminary cost of Rp245.76 billion.
GOLD
Until December 31, 2025, ANTAM conducted gold exploration
activities in Pongkor, West Java. In Pongkor, ANTAM
conducted in underground drilling, surface drilling,
geological mapping and sampling.
NICKEL
ANTAM's nickel exploration until December 31, 2025 is
conducted in North Konawe and Pomalaa, Southeast
Sulawesi. In addition, exploration activities were also
conducted on the Mining Business License (IUP) of ANTAM's
subsidiary, PT Sumberdaya Arindo (PT SD A), in Buli, North
Maluku.
In the North Konawe area, activities carried out include single
FOR MORE INFORMATION tube drilling, geological mapping, grid measurement, core
PLEASE CONTACT: sampling, resistivity geophysical , and laboratory analysis.
In the Pomalaa area, activities included single tube drilling,
Wisnu Danandi Haryanto geological mapping, core sampling, and laboratory analysis.
(Corporate Secretary)
Tel : (6221) 789 1234 Meanwhile, exploration activities in the Buli area by PT SDA
Email : corsec@antam.com include single tube drilling, geological mapping, grid
Website : www.antam.com measurement, and sampling.
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Exploration Report
BAUXITE
Bauxite exploration activities until December 31, 2025 were conducted in Tayan, Landak and
Mempawah - Toho, West Kalimantan. In the Tayan area, the exploration activity was test pit,
geological mapping, sampling, and chemical analysis.
In the Landak area, the activities carried out were land identification, geological mapping, test pit
drilling, measurement and installation of benchmark (BM), and grid test pit measurement.
Meanwhile, in Mempawah – Toho, conducted test pit, geological mapping, sampling, and chemical
analysis.
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 reser ves and resources supported by
integrated Geographic Information System (GIS). Exploration activities conducted to ensure the
adequacy of the Company's strategic mineral resources and reserves potential.
ANTAM’S EXPLORATION AREAS UNTIL DECEMBER 31, 2025
Bauxite:
Tayan
Nickel:
Buli
Bauxite:
Mempawah Nickel:
North Konawe
Bauxite:
Landak
Nickel:
Pomalaa
Gold:
Pongkor
The information in this report that relates to Exploration Results, Miner al Resources or Ore Reserves is based
on information compiled by Mr. Bronto Sutopo who is a Member of The Australasian In stitute 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 mineralis ation and type of deposit under consideration and to
the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the
‘Australasian Code for Reporting of Exploration Res ults, Mineral Resources and Ore Reserves’. Mr. Bronto
Sutopo consents to the inclu sion in the rep ort of the matters based on his information in the form and
context in which it appears.
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