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20251010_ANTM_Laporan Bulanan Aktivitas Eksplorasi_31966768_lamp2.pdf
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Exploration Report
Until September 30, 202 5, Jakarta, October 10, 202 5
ANTAM’s total exploration cost
totalled to Rp176.9 5 billion PT Aneka Tambang Tbk (ANTAM; IDX: ANTM; ASX: ATM) is
(unaudited preliminary figure), pleased to announce its exploration report for periods
focusing on gold, nickel and ended September 30, 2025 in accordance with the Indonesia
bauxite. Stock Exchange listing rules.
ANTAM’s exploration activities until September 30, 2025 were
focused on gold, nickel and bauxite with total
unaudited preliminary cost of Rp 176.95 billion.
GOLD
Until September 30, 202 5, 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 September 30, 202 5 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 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
FOR MORE INFORMATION postdrill stakes , resistivity measurement , single tube drilling ,
PLEASE CONTACT: preparation, analysis laboratory and support activity.
In the Pomalaa area, activities included geological mapping,
Wisnu Danandi Haryanto core sampling, core logging, grid measurement &
(Corporate Secretary) re-measurement, installation of measuring stakes, single tube
Tel : (6221) 789 1234 drilling, as well as preparation and laboratory activities.
Email : corsec@antam.com
Website : www.antam.com Meanwhile, exploration activities in the Buli area by PT SDA
include core logging, measurement and installation of
benchmark (BM), installation of measuring stakes,
re-measurement, and drilling .
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Exploration Report
BAUXITE
Bauxite exploration activities until September 30, 202 5 were conducted in Tayan , Landak and
Mempawah - Toho, West Kalimantan. In the Tayan area, the exploration activity was test pit
excavation , measurement and installation of benchmark (BM), grid test pit measurement , and
development of t est pit . 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 land identification , geological
mapping , test pit sampling , polygon grid /trajectory measurement , and development of t est pit.
ANTAM through the Geomin Unit undertakes integrated mineral exploration activities which
include area survey activities, geological exploration, geophysical exploration, geodesy survey,
drilling, physical and chemic al analysis, calculation of mineral reserves 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 SEPTEMBER 30, 202 5
Bauxite:
Tayan
Nickel:
Buli
Bauxite:
Mempawah -
Toho
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 i n the form and
context in which it appears.
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PT Sumberdaya Arindo
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PT SDA
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