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No. 058/GEMS-CS/VII/2026 Jakarta, 10 Juli 2026
Kepada Yth.:
Direksi PT Bursa Efek Indonesia
Gedung Bursa Efek Indonesia Tower I
Jln. Jend. Sudirman Kav 52-53
Jakarta 10190
U.p. : : Kepala Divisi Penilaian Perusahaan 2) /
Head of Corporate Valuation Division 2
Perihal : Laporan Aktivitas Eksplorasi periode Q2 2026 Subject : Exploration Activity Q2 2026 Report
Dengan hormat, Sincerely,
Sehubungan dengan Peraturan PT Bursa Efek Indonesia In accordance to Indonesia Stock Exchange Regulation
Nomor I-E tanggal 12 Desember 2025 tentang Kewajiban No. I-E dated 12 Desember 2025 concerning
Penyampaian Informasi, maka dengan ini kami Information Submission Obligation, we hereby submit
sampaikan Laporan Aktivitas Eksplorasi Pertambangan the Exploration Activity for the period of Q2 2026 of the
periode Q2 2026 di lingkungan anak-anak Perusahaan Company’s subsidiaries as attached.
PT Golden Energy Mines Tbk (“Perseroan”) sebagaimana
terlampir.
Dalam hal terdapat perbedaan penafsiran In the event there is any difference of
informasi yang diumumkan dalam Bahasa Inggris dan interpreting the information notified in English
Bahasa Indonesia, maka informasi yang digunakan language and Indonesian language, the Indonesian
sebagai acuan adalah informasi dalam Bahasa language shall prevail.
Indonesia.
Demikian kami sampaikan. Atas perhatiannya kami Thank you for your attention and co-operation.
ucapkan terima kasih.
Hormat kami/Sincerely yours,
PT Golden Energy Mines Tbk
Sudin, SH
Corporate Secretary
Tembusan/Copies :
- Direksi Perseroan/Board of Directors of the Company.
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Page 2
1. PT Kuansing Inti Makmur (“KIM”) dan anak perusahaan
(KIM Blok) / and its subsidiaries (KIM Block)
Tidak ada kegiatan eksplorasi di area KIM Blok pada There is no exploration activity in the mine area of
periode Q2 2026. KIM Block for the period of Q2 2026.
2. PT Borneo Indobara (“BIB”)
2.1. Daerah Eksplorasi 2.1. Exploration Activity
Kegiatan pengeboran eksplorasi meliputi 3 kegiatan Exploration drilling activities include 3 main
utama, yaitu pengeboran eksplorasi preproduksi, activities, namely preproduction exploration
pengeboran eksplorasi pengembangan, dan drilling, development exploration drilling, and
pengeboran geoteknik. geotechnical drilling.
Kegiatan pengeboran preproduksi dilakukan untuk Preproduction drilling activities are carried
melengkapi data pemodelan geologi dan kualitas out to complement geological modeling data
batubara pada masing-masing area. Pengeboran and coal quality in each area. Development
eksplorasi pengembangan bertujuan untuk exploration drilling aims to obtain lithology
mendapatkan data litologi dan kualitas batubara and coal quality data for geological modeling
untuk pembuatan model geologi serta mendukung and to support the addition of new coal
penambahan sumberdaya batubara baru pada area resources in areas where exploration has
yang belum pernah dilakukan kegiatan eksplorasi. never been carried out. Geotechnical drilling
Kegiatan pengeboran geoteknik dilakukan untuk activities are carried out to determine the
mengetahui daya dukung tanah dan sifat fisik carrying capacity of the soil and the physical
batuan pada area pit penambangan dan disposal properties of the rock in the mining area and
serta di area project perusahaan. disposal area in the company.
Kegiatan pengeboran periode Q2 2026 dilakukan Drilling activities in Q2 2026 were carried out
pengeboran eksplorasi preproduksi di area Kusan - by preproduction exploration in Kusan –
Girimulya dan pengeboran geoteknik di area Kusan. Girimulya and geotechnical drilling in Kusan.
2.2. Metode Pengeboran 2.2. Drilling Methods
Pada periode Q2 2026, pengeboran eksplorasi For the period of Q2 2026, preproduction
preproduksi dilakukan dengan metode open hole exploration drilling was carried out using
dan part coring. Kegiatan geofisika logging open holes and part coring. Geophysical
dilakukan di seluruh lubang bor yang telah selesai logging activities are carried out in all drilled
dilakukan untuk memastikan kedalaman top dan holes that have been completed to ensure
bottom batubara sehingga ketebalan batubara the depth of the top and bottom of the coal
dapat diketahui lebih akurat dan untuk mengetahui so that the thickness of the coal can be
varian dan karakteristik batuan non batubara known more accurately and to determine the
berdasarkan perekaman gelombang gamma ray dan characteristics of non-coal rock based on
density. recording gamma ray waves and density.
2.3. Pelaksanaan dan Pengawasan Kegiatan Eksplorasi 2.3. Exploration Activities Progress & Supervision
Kegiatan pengeboran eksplorasi dan geoteknik Exploration and geotechnical drilling activities
dilakukan oleh Departemen Survey, Geotech & carried out by the Survey, Geotech &
Exploration (SGE) BIB. Exploration (SGE) Department of BIB.
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Page 3
Untuk mendukung kegiatan pengeboran eksplorasi To support the preproduction exploration
preproduksi dan eksplorasi pengembangan berupa drilling and development exploration
pengeboran open hole dan coring digunakan 2 unit activities such as open hole and coring
rig inhouse yaitu 1 unit rig tipe Jacro 175 dan 1 unit geotechnical drilling, units type of inhouse rig
rig tipe Jacro 500. Untuk pengeboran geoteknik were used, which are 1 unit Jacro 175 and 1
dengan metode SPT digunakan 1 unit rig tipe Jacro unit Jacro 500. For geotechnical drilling using
200. Seluruh unit rig dioperasikan oleh drilling the SPT method, 1 unit Jacro 200 was used.
operator BIB. All rig units were operated by BIB drilling
operator.
Seluruh kegiatan pengeboran disupervisi langsung All drilling activities are directly supervised by
oleh Wellsite Geologist, Departemen SGE dan the Wellsite Geologist, SGE Department and
Evaluator Geologist Departemen Strategic, Plan & Geologist Evaluator, Strategic, Plan &
Optimization (SPO), seluruhnya dibawah Divisi Mine Optimization (SPO) Department, all under the
Development & Contract Management (MDC) BIB. Mine Development & Contract Management
(MDC) Division of BIB.
2.4. Kemajuan Eksplorasi 2.4. Exploration Progress
Kegiatan pengeboran eksplorasi selama periode Q2 Drilling exploration for the period of Q2 2026
2026 adalah sebagai berikut : are as follows :
Tabel 1.1. Kemajuan Pengeboran Ekplorasi dan Geoteknik periode Q2 2026/
Progress in Exploration and Geotechnical Drilling Period of Q2 2026
Lubang Geoteknik (m) / Lubang Eksplorasi (m) /
Geotech Drilling Exploration Drilling
Lokasi Jumlah Total kedalaman (m) / Jumlah Total kedalaman (m) /
Location lubang Total Depth lubang Total Depth
/ /
Total Drilling Logging Total Drilling Logging
Holes Holes
Girimulya - - - 55 2.961 2.802,55
Kusan 2 70 42,15 4 1.076 1.056,55
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Page 4
2.5. Biaya Eksplorasi 2.5. Drilling Cost
Untuk biaya eksplorasi selama periode Q2 2026 The exploration costs for the period of Q2
adalah sebagai berikut : 2026 are as follows :
Tabel 1.2. Biaya Pengeboran Eksplorasi dan Geoteknik RIG Inhouse periode Q2 2026 /
Exploration and Geotechnial Drilling Cost for the period of Q2 2026
Year to Date
Operating Expense
Anggaran / Plan (Rp) Realisasi / Realisation (Rp)
Biaya Pengeboran / Rp. 3.355.381.327,- Rp. 2.600.084.864,-
Drilling Cost
3. PT Trisula Kencana Sakti (TKS)
Tidak ada kegiatan eksplorasi di area TKS pada periode There is no exploration activity in the mine area of
Q2 2026. TKS for the period of Q2 2026.
4. PT Berkat Satria Abadi (BSA) dan PT Wahana Rimba
Lestari (WRL)
Tidak ada kegiatan eksplorasi di area BSA dan WRL pada There is no exploration activity in the mine area of
periode Q2 2026. BSA and WRL for the period of Q2 2026.
5. PT Barasentosa Lestari (BSL)
5.1. Daerah Eksplorasi 5.1. Daerah Eksplorasi
Kegiatan pengeboran eksplorasi BSL periode Q2 Drilling activities of BSL in Q2 2026 was
2026 dilakukan di area Blok Belani pada area Low conducted in the Belani Block area at Low
Wall Pit. Tipe pengeboran meliputi pengeboran full Wall Pit area. The drilling types is full coring
coring bagian dari Bor Piezometer. Pengeboran for Geotech Piezometer drillhole. Geophysical
pada Q2 tahun 2026 tidak dilengkapi dengan logging measurements were not performed
pengukuran Geofisika Logging. during Q2 2026.
5.2. Metode Pengeboran 5.2. Drilling Method
Pelaksanaan pengeboran pada blok Belani Drilling activities at Belani Block is carried out
dilaksanakan dengan memakai sistem grid, dengan using a grid system, with 50-100 meter
jarak antara cross line 50-100 meter dan jarak antar distance of cross line and 10-75 meter drill
lubang bor 10-75 meter, mengikuti jurus dan hole spacing, follow the strike and dip of coal
kemiringan (down dip) pelapisan batuan hingga seam with maximum Depth around 60-90
kedalaman maksimal 60-90 meter. Hal ini bertujuan meter. The purpose of grid system and
untuk memaksimalkan stripping ratio (SR) dan control maximum Dept for determine of
kemenerusan batubara. Rapat nya radius antar titik optimization stripping ratio (SR) and
bor disebabkan adanya indikasi tingkat komplesitas continuity of coal. The drillhole spacing is
geologi yang tinggi pada area pengeboran relatively close, because drilling area have
khususnya adanya struktur geologi patahan dengan high complexity geological condition, such as
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Page 5
offset (throw) lebih besar dari 20 meter, bidang structure geology fault with throw more than
perlapisan (dip) yang berubah terjal dari 26° 20 meter. Beside that there are changed dip
menjadi 88° dan jurus perlapisan (strike) dari N 256 of coal seam from 26° to be 88 °, strike of coal
E menjadi N 135 E dan terdapat pola lipatan pada seam from N 256 E to be N 135 E and fold
lapisan batuan yang telah terbuka (exposed). major presence at exposed of mining area.
Pengeboran yang dilakukan yaitu tipe lubang Drilling was conducted with open hole, part
terbuka (open hole) dan part coring. Unit bor yang coring and full coring type. The drill unit used
digunakan adalah rig tipe Jacro-200 dengan are rigs type Jacro-200 with 4 inch (diameter
diameter lubang bor (outside) HQ 4 inch (Ǿ 96 mm). 96 mm) drill holes (outside) HQ.
5.3. Pelaksanaan dan Pengawasan Kegiatan Eksplorasi 5.3. Implementation and Supervision of
Exploration Activities
Kegiatan pengeboran BSL periode Q2 2026 pada Drilling activities of BSL for the period of Q2
blok Belani dilakukan oleh tim Eksplorasi dengan 1 2026 at Block Belani were carried out by the
unit rig di bawah supervisi Geologist Section Exploration team with 1 rig under the
Geology dan Geotech, Departemen Mine Planning supervision of the Geologist Section Geology
& Technical Service BSL. and Geotech, BSL's Mine Planning & Technical
Service Department.
Kegiatan pengeboran Q2 2026 dilakukan 1 shift Drilling activities on Q2 2026 was conducted 1
yaitu pagi dengan target kedalaman maksimal shift (day shift) with depth target per hole is
meteran per lubang bor sebesar 60-90 meter. 60-90 meter.
Unit Rig yang digunakan pada kegiatan pengeboran Drilling activity used 1 unit of Jacro-200 with
adalah tipe Jacro-200 dengan spesifikasi diameter an outside (HQ) drill hole diameter of 4 inches
lubang bor (outside) HQ 4 inch (Ǿ 96 mm). Selain (Ǿ 96 mm). In addition to the Jacro rig unit,
unit Rig Jacro juga terdapat unit Standart there is also a Standard Penetration Test
penetration Tes (SPT) dengan palu. Unit rig jacro- (SPT) unit equipped with a hammer. This
200 ini merupakan unit dengan spesifikasi target Jacro-200 rig unit is designed to achieve a
kedalaman pengeboran coring hingga 90 meter dan coring drill depth of up to 90 meters, and due
ukuran yang cukup besar, sehingga diperlukan unit to its relatively large size, heavy equipment
alat berat (excavator atau Bulldozer) untuk (such as an excavator or bulldozer) is required
melakukan perpindahan unit dari titik bor satu ke to move the unit from one drill point to
titik bor lainnya. another.
Lubang bor yang telah selesai dilakukan Drill holes that have been finished then
pengeboran kemudian dilakukan pickup collar carried out by a pickup collar survey by the
survey oleh tim survey BSL yang terdiri dari 1 BSL survey team consisting of 1 surveyor
koordinator surveyor dan 2 crew survey. coordinator and 2 survey crews.
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Page 6
5.4. Kemajuan Eksplorasi 5.4. Drilling Progress
Selama periode Q2 2026 kegiatan pengeboran In Q2 2026 the exploration activities (full
geotek full coring (piezometer) menyelesaikan 3 coring piezometer Geotech) have completed
lubang bor. Total kedalaman lubang bor selama 3 bore holes. Total drill hole Depth in Q2 2026
periode Q2 2026 adalah 136,80 meter rincian pada were 136.80 meters as detailed in table 1.3.
tabel 1.3. Drilling was carried out using coring drilling
Pengeboran dilakukan dengan tipe pengeboran type to obtain rock samples and determined
coring dengan tujuan mendapatkan sample geotek of lithology for aquifer layer at piezometer
batuan penentuan litologi sebagai akuifer untuk hole .
titik bor piezometer.
Tabel 1.3 Kemajuan Pengeboran Ekplorasi BSL Periode Q2 2026 /
BSL Drilling Exploration Progress for the period of Q2 2026
Lubang Eksplorasi (m) /
Exploration Drilling
Lokasi / Jumlah Total kedalaman (m) /
Location lubang / Total Depth
Total (m)
Total Coring Full Coring
Holes Open Holes
(Infill) (Geotech)
Belani 3 3,30 133,50 136,80
5.5. Biaya Eksplorasi 5.5. Exploration Cost
Untuk biaya eksplorasi selama periode Q2 2026 The exploration costs for the period of Q2
adalah sebagai berikut : 2026 are as follows :
Tabel 1.4. Biaya Pengeboran Eksplorasi BSL periode Q2 2026 /
BSL Drilling Cost for the period of Q2 2026
Year to Date
Operating Expense
Anggaran / Plan (Rp) Realisasi / Realisation (Rp)
Biaya Eksplorasi BSL /
Rp. 797.458.012,- Rp. 377.436.906,-
Cost of Exploration BSL
PT. Golden Energy Mines Tbk.
Sinar Mas Land Plaza Tower II, 6th Floor Jl. MH. Thamrin No. 51 Kav. 22, Jakarta Pusat 10350
Phone: (62) 21 50186 888 , Fax: (62) 21 3199 0319
Website: www.goldenenergymines.com
Names mentioned 16 people and organisations named in the text · linked when the evidence is strong
unresolved
org
Indonesia Stock Exchange
p.1
unresolved
org
PT Golden Energy Mines Tbk Sudin
p.1
unresolved
person
Sudin, SH
· Corporate Secretary
p.1
unresolved
org
PT Kuansing Inti Makmur
p.2
unresolved
org
Departemen Survey
p.2
unresolved
org
Departemen SGE
p.3
unresolved
org
Departemen Strategic
p.3
unresolved
org
PT Trisula Kencana Sakti
p.4
unresolved
org
PT Berkat Satria Abadi
p.4
unresolved
org
PT Wahana Rimba Lestari
p.4
unresolved
org
PT Barasentosa Lestari
p.4
unresolved
org
Departemen Mine Planning
p.5
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