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20260410_DEWA_Laporan Bulanan Aktivitas Eksplorasi_32070033_lamp2.pdf
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LAPORAN TENTANG AKTIVITAS EKSPLORASI
OLEH ANAK PERUSAHAAN PT DARMA HENWA TBK
(EXPLORATION ACTIVITIES REPORT BY SUBSIDIARY of PT DARMA HENWA TBK)
Nama Perusahaan : PT GAYO MINERAL RESOURCES (“PT GMR”)
(Name of Company)
Tahapan Kegiatan IUP : Eksplorasi (Exploration)
(Phase of Activity of Contract Work)
Laporan Eksplorasi Periode : 1 Januari - 31 Maret 2026
(Exploration Report Period)
A Daerah Explorasi Exploration Areas
1. Upper Tengkareng (UT) 1. Upper Tengkareng (UT)
2. Southeast Tengkareng (SET) 2. Southeast Tengkareng (SET)
B Biaya Eksplorasi Exploration Cost
Rp 23,469,664,408 Rp 23,469,664,408
C Bentuk Kegiatan Eksplorasi Exploration Activities
1. Completed the Phase 2a resource drilling
1. Menyelesaikan kegiatan program pengeboran
program at the UT Prospect in February 2026
sumber data fase 2a di Prospek UT pada bulan
and continued the Phase 2b drilling program
Februari 2026 dan melanjutkan program
with a target of 20.000 m, including 3
pengeboran fase 2b dengan target 20,000m,
geotechnical drill holes.
termasuk 3 titik pengeboran geoteknik.
2. Melanjutkan pengiriman sampel batuan inti 2. Continued submission of drill core samples
bor untuk analisis geokomia ICP multi elemen for geochemical analysis (ICP multi-
(Cu, Ag, Mo, As, Pb, Zn, dll) dan Fire Assay elements: Cu, Ag, Mo, As, Pb, Zn, etc.) and
untuk Au ke Laboratorium PT Sucofindo. Fire Assay (Au) to PT Sucofindo Laboratory.
Pengiriman termasuk sampel untuk program The submission includes regular QAQC
regular QAQC sampel protokol. sample control protocol
3. Melanjutkan analisis sample untuk uji
3. Continued metallurgical test work (flotation,
metalurgi (flotasi, pemisahan gravitasi,
gravity separation, leaching, and
pelindian, dan penggerusan) di Laboratorium
comminution) at PT Geoservices Laboratory.
PT Geoservices.
4. Updated internal geological and resource
4. Melakukan pembaruan pemodelan geologi
models for the UT Prospect.
internal dan sumber daya untuk Prospek UT.
5. Melakukan penjajakan beberapa vendor 5. Conducted initial engagement with several
terkait pekerjaan pelaporan standar JORC dan vendors for JORC-compliant standard
pemrosesan metalurgi. reporting and metallurgical processing work.
6. Continued geological mapping activities at
6. Melanjutkan kegiatan pemetaan geologi untuk
the SET Prospect, including additional rock
Prospek SET, termasuk pengambilan
sampling and initial drill plan.
PT Gayo Mineral Resources
Gedung Bakrie Tower Lantai 8, Rasuna Epicentrum,
Jalan H.R. Rasuna Said, Karet Kuningan, Setiabudi, Jakarta Selatan
T. (+62 21) 29912350 – F. (+62 21) 29912364
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tambahan contoh batuan dan perencanaan
lokasi pengeboran awal.
D Pihak-Pihak yang Terlibat Involved Parties
1. PT Arfa Explorindo Nusantara 1. PT Arfa Explorindo Nusantara
2. PT Samgeo Bor 2. PT Samgeo Bor
3. PT Sucofindo 3. PT Sucofindo
4. PT Geoservice 4. PT Geoservice
5. PT MiningOne Indonesia 5. PT MiningOne Indonesia
E Metode Pengujian Testing Methods
1. AAS 1. AAS
2. Specific Gravity 2. Specific Gravity
3. Fire Assay 3. Fire Assay
4. ICP OES 30 elements 4. ICP OES 30 elements
5. Metallurgical Test 5. Metallurgical Test
6. Physical Properties 6. Physical Properties
7. Uniaxial Compressive Strength 7. Uniaxial Compressive Strength
8. Point Load Index 8. Point Load Index
9. Vein Density Analysist 9. Vein Density Analysist
10. Magnetic Susceptibility 10.Magnetic Susceptibility
Kemajuan Eksplorasi Terhadap periode
F Exploration Progress (vs Previous Period)
sebelumnya
1. Total pencapaian pengeboran selama
1. Total drilling achievement during Q1 2026
Triwulan I tahun 2026 adalah 2.747,2 m.
reached 2,747.2 m, completing the Phase 2a
Kegiatan ini merupakan bagian dari
resource drilling program using 4 drilling rigs.
penyelesaian program pengeboran sumber
The program has progressed into Phase 2b
daya fase 2a dengan menggunakan 4 mesin
utilizing 3 drilling rigs, including 3 planned
bor. Program pengeboran berlanjut ke fase 2b
holes for geotechnical and hydrological
dengan menggunakan 3 mesin bor, termasuk
investigations. Total cumulative drilling
rencana 3 lubang bor untuk keperluan
progress Project to Date is 31,485.75 m.
geoteknik dan hidrologi. Total pencapaian
pengeboran (Project to Date) adalah
31,485.75 m.
2. Total sampel batuan inti bor untuk analisis 2. The total drill core samples for geochemical
geokimia ICP multi elements (Cu, Ag, Mo, As, analysis ICP multi-elements (Cu, Ag, Mo, As,
Pb, Zn, dll) dan Fire Assay untuk Au ke Pb, Zn, etc.) and Fire Assay for Au submitted
Laboratorium PT Sucofindo yang telah keluar to PT Sucofindo Laboratory with analytical
hasil analisisnya selama Triwulan I tahun results returned during Q1 2026 was 928
2026 adalah 928 sampel, dan akumulasi samples, and the cumulative sample with
sampel yang telah keluar hasilnya adalah completed results is 14.567 samples.
14,567 sampel. Pengiriman sampel ini Sample submissions include the standard
termasuk program protokol standar QAQC. QAQC sample protocol program.
3. Telah menyelesaikan rangkaian uji metalurgi 3. Metallurgical test work (flotation, gravity
(flotasi, pemisahan gravitasi, pelindian, dan separation, leaching, and comminution) has
penggerusan) untuk domain sampel QDP. been completed for the QDP domain.
Selanjutnya akan dilakukan untuk domain Testing will continue for the QFD and
QFD dan Sediment Breccia. Sediment Breccia domains.
PT Gayo Mineral Resources
Gedung Bakrie Tower Lantai 8, Rasuna Epicentrum,
Jalan H.R. Rasuna Said, Karet Kuningan, Setiabudi, Jakarta Selatan
T. (+62 21) 29912350 – F. (+62 21) 29912364
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4. Total 36 sampel batuan tambahan telah 4. An additional 36 rock samples from the SET
dikirimkan untuk analisis geokimia ICP multi Prospect were submitted for geochemical
elements (Cu, Ag, Mo, As, Pb, Zn, dll) dan FA analysis (ICP multi-elements: Cu, Ag, Mo,
untuk Au ke Laboratorium PT Sucofindo dari As, Pb, Zn, etc.) and Fire Assay (Au) to PT
Prospek SET. Sucofindo Laboratory.
5. Persiapan penyusunan dokumen Studi 5. Preparation of Feasibility Study (FS) and
Kelayakan dan AMDAL untuk disampaikan ke AMDAL documents for submission to ESDM
ESDM sebagai persyaratan perubahan as part of the requirements for upgrading the
perizinan menjadi IUP Operasi Produksi. license to IUP Production Operation status.
G Rencana Selanjutnya Next Plan
1. Melanjutkan pengeboran fase 2b di Prospek 1. Continuing Phase 2b drilling at the UT
UT untuk meningkatkan tingkat keyakinan Prospect to improve resource confidence,
sumber daya, studi geoteknik, hidrologi, dan including geotechnical, hydrological and
metallurgy. metallurgy studies.
2. Melanjutkan pemetaan geologi detail di area 2. Continuing detailed geological mapping in
Prospek SET and rencana pengeboran awal SET Prospect area and initial exploration
eksplorasi. drilling plan.
3. Melanjutkan pengiriman sampel batuan inti ke 3. Continuing submission of drill core samples
Laboratorium PT Sucofindo. to PT Sucofindo Laboratory.
4. Melakukan percepatan perpanjangan IUP 4. Accelerating the extension of IUP
Eksplorasi dan peningkatan izin menjadi IUP Exploration and upgrading to IUP Production
Operasi Produksi. Operation.
H Hambatan Eksplorasi Exploration Constraints
1. Keadaan kahar berupa bencana alam banjir 1. Force majeure conditions due to flash floods
bandang dan tanah longsor yang melanda and landslides in Aceh Province and
Provinsi Aceh dan sekitarnya yang surrounding areas, causing disruption to site
menyebabkan akses dan logistik terhambat. access and logistics.
2. Sedang dalam proses perpanjangan IUP 2. Currently undergoing the extension process
Eksplorasi of the Exploration IUP
I Perizinan/Persetujuan Baru Yang Diperoleh New Permits/Approvals Obtained
- -
PT Gayo Mineral Resources
Gedung Bakrie Tower Lantai 8, Rasuna Epicentrum,
Jalan H.R. Rasuna Said, Karet Kuningan, Setiabudi, Jakarta Selatan
T. (+62 21) 29912350 – F. (+62 21) 29912364
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PT GAYO MINERAL RESOURCES
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PT MiningOne Indonesia
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PT Sucofindo Laboratory
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