20260409_AMMN_Laporan Bulanan Aktivitas Eksplorasi_32069371_lamp3.pdf

Batu Hijau Block I

No exploration field work or costs incurred in Q1 2026.

Forward Plan:
   • Exploration drilling program at West Nangka (1 rig), for 2 holes or 1200 m.




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Elang Block II

Expenditure:
   • Exploration activities included drilling and geological mapping. Costs were circa
      USD $ 2.75 M.

Work Areas:
  • Elang Cu-Au Project.
  • Gerbang East Cu-Au Project.
  • Elang North-East.

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 (3 rigs).
   • Geological mapping.
   • 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.
   • The exploration drilling program in the Gerbang East area is designed to evaluate
       the mineralization potential and to obtain sufficient geological and grade data to
       support the classification of mineral resources within the newly discovered Cu-Au
       deposit in the region.
   • Geological mapping at Elang Northeast. The objective is to guide exploration
       toward the most prospective zones, thereby enabling precise drill-hole targeting.

Exploration Results:
   • Elang Cu-Au project diamond drilling (7 holes for 3,863.5 m):
           o Resource infill, Elang - 3 holes (1,789.8 m) completed or in progress,
           o Exploration drilling, Gerbang East - 4 holes (2,073.7 m) completed or in
              progress.
   • Core samples submitted to the assay lab amounted to 1,463.
   • The geological mapping program covered an area of 88.7 ha at Elang Northeast.

Forward Plan:
   • Continue resource drilling at Elang and exploration drilling at Gerbang East (2 rigs).
   • Exploration drilling at Sebu East (1 rig), 2 holes or 2000 m




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Figure 2. Elang Block II Q1 2026 – Exploration Locations.




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Rinti Block III

Expenditure:
   • Exploration activities included drilling and geological mapping. Costs were circa
      USD $307 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 and Bekolar. (Figure 3).
   • The objective of geological mapping is to reconfirm the extent and boundaries of
       alteration and mineralization around the SW Sane and Bekolar lithocap system.

Exploration Result:
   • Exploration drilling - 2 holes (1,283.7 m) completed or in progress.
   • Core samples submitted to the assay lab amounted to 480.
   • The geological mapping program covered an area of 16.9 ha at Bekolar.


Forward Plan:
   • Exploration drilling (1 rig); upon completion, the rig will be allocated to Sebu East
      (Elang Block).




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Figure 3. Rinti Block III Q1 2026 – Exploration Locations.




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Lampui Block IV

No exploration field work or costs incurred in Q1 2026.

Forward Plan:
   • Review of previous exploration results




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