20260109_AMMN_Laporan Bulanan Aktivitas Eksplorasi_32018735_lamp3.pdf

Batu Hijau Block I

No exploration field work or costs incurred in Q4 2025.

Forward Plan:
   • Review of previous exploration results.




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Elang Block II

Expenditure:
   • Exploration activities included drilling and geological mapping. Costs were circa USD
      $ 2.8 M.

Work Areas:
  • Elang Cu-Au Project.
  • Gerbang East Cu-Au Project.
  • Sebu Cu-Au Project.
  • Elang waste dump plan at Semamu area.

Exploration Parties:
   • Manager - AMNT Exploration.
   • Drilling contractor - PT Minera Nusa Drillindo (PT MND).
   • Assay Laboratory (drill core, rock) - Intertek Utama Service (ITS).

Assessment Methods:
   • Diamond drilling (4-5 rigs).
   • Geological mapping and soil sampling.
   • Alteration analyses using an ASD TerraSpec 4 Mineral Spectrometer.

Objectives:
   • Resource development drilling continued at the Elang Cu-Au deposit (Figure 2). The
       purpose of this infill program was to address data gaps, refine the geological model,
       and enhance the confidence level of mineral resource classifications.
   • Exploration drilling at Gerbang East is targeting the Cu-Au porphyry mineralisation
       potential below a lithocap and diatreme breccias.
   • Exploration drilling at Sebu East was conducted as a follow-up to the Q2 2025 IP
       survey results, which indicated anomalies in chargeability and resistivity.
   • Geological mapping and ridge-spurs soil sampling at Semamu. The objective is to
       delineate the extent of the surficial Cu-Au geochemical anomalies and to define new
       drill targets.
   • Sterilisation drilling and geological mapping in the proposed Elang waste dump at
       Semamu were carried out to ensure that no economically viable mineralisation is
       present beneath or surrounding the planned dump site.

Exploration Results:
   • Elang Cu-Au project diamond drilling (18 holes for 6,438.5 m):
           o Resource infill, Elang - 9 holes (3,161.9 m) completed or in progress,
           o Exploration drilling, Gerbang East - 3 holes (2,142.0 m) completed or in
              progress.
           o Exploration drilling, Sebu East - 1 hole (184.4 m) completed.
   • Sterilisation holes at Elang waste dump plan - 5 holes (949.8 m) completed.
   • Core samples submitted to the assay lab amounted to 2,722.
   • Geological mapping program – 131 rock samples and 42 soil samples from Elang
       waste dump plan area were submitted to the lab.




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Forward Plan:
   • Continue resource drilling at Elang and exploration drilling at Gerbang East (3 rigs).




                 Figure 2. Elang Block II Q4 2025 – Exploration Locations.




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Rinti Block III

Expenditure:
   • Exploration activities included drilling and geological mapping. Costs were circa USD
      $ 226 K.

Work Areas:
  • Rinti Cu-Au Project.

Exploration Parties:
   • Manager - AMNT Exploration.
   • Drilling contractor - PT Minera Nusa Drillindo (PT MND).
   • Assay Laboratory (drill core, rock) - Intertek Utama Service (ITS).

Assessment Methods:
   • Diamond drilling (1 rig).
   • Geological mapping.
   • Alteration analyses using an ASD TerraSpec 4 Mineral Spectrometer.

Objective:
   • Exploration drilling at Rinti is targeting the Cu-Au porphyry mineralisation potential
       below a lithocap in SW Sane. (Figure 3).
   • The objective of geological mapping is to reconfirm the extent and boundaries of
       alteration and mineralization around the SW Sane lithocap system

Exploration Result:
   • Exploration drilling - 2 holes (1,033.4 m) completed or in progress.
   • Core samples submitted to the assay lab amounted to 313.
   • Geological mapping program – 2 rock samples from Rinti were submitted to the lab.


Forward Plan:
   • Continue exploration drilling (1 rig) at lithocap zone.




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Figure 3. Rinti Block III Q4 2025 – Exploration Locations.




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Lampui Block IV

No exploration field work or costs incurred in Q4 2025.

Forward Plan:
   • Review of previous exploration results.




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