Monument Announces First 16 Drill Hole Results of Selinsing MINE Expansion Drilling Program
1 | 19
December 3, 2025 News Release Release #08-2025
MONUMENT ANNOUNCES FIRST 16 DRILL HOLE RESULTS
OF SELINSING MINE EXPANSION DRILLING PROGRAM
Vancouver, B.C., December 03, 2025 -Monument Mining Limited (TSX -V: MMY and FSE:
D7Q1)("Monument" or the "Company") is pleased to announce the first 16 drill hole results from its first
BR/Felda mine expansion drilling program and update mine expansion drilling activities at the Selinsing
Gold Mine including Selinsing and Buffalo Reef gold projects, located in Pahang State on the Central Gold
Belt of Western Malaysia.
Ms. Cathy Zhai, President and CEO of Monument Mining commented: "We are encouraged by the first 16
drill hole assay results from the exploration drill program within targeted potential mine expansion areas,
including both outside of Buffalo Reef/Felda pit shells (“BR/Felda mine expansion drilling”) and Selinsing
pit shells (“Selinsing mine e xpansion drilling”) with boundary covering all existing defined resources
(www.SedarPlus.ca: NI43-101 Technical Report “Selinsing Gold Sulphide Project”, January 31, 2019) (the
“targeting mine expansion areas”). Objective of expansion drilling is aimed to increase gold resources and
potentially expanded the life of mine at Selinsing Gold Mine.”
BR/Felda mine expansion target Area covers 115
acres of land, laying the foundation to evaluate
the potential to extend the currently defined
Mineral Resources, which may inform future
LOM planning subject to further studies (Figure
1). Success of the current drilling would have the
potential to support the pit expansion at Buffalo
Reef/Felda.
Buffalo Reef/Felda expansion drilling started on
May 7 th, 2025. To date 27 drill holes have been
completed for 2,952m.
Figure 1. Plan view of Buffalo Reef Central
depicting LOM pit shells the footprint of
the Expanded Pit Shell.
2 | 19
DRILL PROGRAM HIGHLIGHTS
The first twenty-seven (27) drill holes of the Buffalo Reef/Felda Mine Expansion Drill ing Program have
been completed, with high gold assay results returned.
• Assay results for sixteen (1 6) drill holes have been received ; results from eleven (11) holes are
outstanding.
• Significant highlights include:
o MBRRC579: 22m @ 0.86g/t from 2m including 1m @ 1.41g/t Au from 2m and
6m @ 1.9g/t Au from 8m
o MBRRCDD01: 5m @ 2.01g/t Au & 0.47%Sb from 149m and
1m @ 1.14g/t Au & 0.2%Sb from 160m
o MBRDD600: 4m @ 3.42g/t Au & 0.49%Sb from 55m
o MBRDD601: 7m @ 4.79g/t Au & 0.61%Sb from 43m includes
5m @ 6.33g/t & 0.79%Sb from 45m
o MBRDD602: 3m @ 1.82g/t Au & 0.61%Sb from 22m and
8m @ 2.17g/t & 0.30%Sb from 26m
o MBRDD611: 3m @ 4.66g/t Au & 1.28%Sb from 6.9m
The mine expansion drilling program includes 118 planned drill holes for 17,477m comprised of 109 drill
holes for 15,377m at Buffalo Reef Gold Project and Felda mine expansion target Areas (Buffalo Reef/Felda
Mine Expansion Drilling), and 9 drill holes for 2,100m will be followed up at the Selinsing Gold Project
mine expansion target Area (Selinsing Mine Expansion Drilling) to test the dip and strike extension of the
mineralized structure, providing an important guide for future work.
Monument has budgeted USD $2.5 million to complete both expansion drilling programs targeting full
completion by the end of June 2026 : the mine expansion drilling is targeting completion in March 2026
with final assay results expected by the end of June 2026.
The success of the drilling program may potentially develop a large-scale open pit. The Mine Expansion
Drill Program including drilling strategy and prioritization of target Areas and holes will be closely
monitored with regular review and may be altered accordingly.
BUFFALO REEF/FELDA MINE EXPANSION DRILLING PROGRAM
Total of 109 drill holes for 15,377m of drilling planned (Table 1) for the Buffalo Reef/Felda Mine Expansion
drilling (Figure 2 and Figure 3) are broken down into Stage 1 of 73 drill holes for 10,365m and Stage 2 of
36 drill holes for 5,012m.
3 | 19
Figure 2. Plan view of the Buffalo Reef Central (BRC2, BRC3 & BRC4), showing all the proposed and
completed drill holes collars of the Buffalo Reef/Felda Mine Expansion drilling program as well as assay
results received to date. Drilling is generally carried out orthogonal to the domain being targeted.
4 | 19
Figure 3. Long section A-A through Buffalo Reef Central depicting Mine Expansion target Areas (Stage 1
and Stage 2) targeted in the Mine Expansion Drilling, looking west.
Current Progress
Twenty-seven (27) drill holes for 2,952m of drilling (Table 2) have been completed to date; eleven (11) of
these holes are still waiting for assay results. Results to date have been encouraging (Figure 2, Table 3)
with mineralized gold intersections being intersected within the BRC3 and BRC4 gap area and outside of
the current geology model. The focus of the drilling and targeted areas remains flexible so as not to disrupt
mining activities.
Drilling progress has now been accelerated. It was previously behind schedule as anticipated due to a drill
rig re-allocation to prioritize grade control activities. Two additional diamond drilling rigs are now
provided by a local contractor and were placed for drilling at the end of November 2025. An updated
geology model, resource estimate, and resource statement will follow targeting completion by October
2026.
To assist in developing the mine expansion drilling program, the Company utilized an Expanded Pit Shell
generated from an open pit optimization study including Selinsing and Buffalo Reef Projects. The pit shell
was generated by removing spatial constraints such as infrastructure to generate an Expanded Pit Shell
around the project Mineral Resources. The expanded pit shell encompasses areas outside the current
LOM that have the potential of generating additional Mineral Resources, which may inform future LOM
planning subject to further studies.
The two-stage approach drilling is outlined below.
Buffalo Reef/Felda Mine Expansion Drilling - Stage 1
Stage 1 of 73 drill holes for 10,365m are presented in Figure 2.
Stage 1 Buffalo Reef/Felda Expansion drilling program focuses on Mine Expansion target Areas to evaluate
the potential to extend the currently defined Mineral Resources, which may inform future LOM planning
subject to further studies , beyond the current LOM pit shells at the Buffalo Reef/Felda (Figure 3) as
5 | 19
defined below:
1. Buffalo Reef Central (BRC3) and Buffalo Reef Central (BRC4) gap, mineralization outside the LOM
pit but within and adjacent to an expanded pit shell.
2. Buffalo Reef Central (BRC2) and Buffalo Reef Central (BRC3) gap, mineralization outside the LOM
pit but within and adjacent to expanded pit shell.
3. Buffalo Reef Central (BRC4) dip extension, mineralization outside the LOM pit shape but within
and adjacent to the expanded pit shell.
4. Buffalo Reef Central (BRC 2) structural extension and step out drilling, outside the LOM pit shape
but within and adjacent to the expanded pit shell.
The gap between BRC 2 and BRC 3 pits (Figure 4) and BRC3 and BRC 4 pits remain prospective for shallow-
depth mineralization. Still, it remains undeveloped and requires additional drilling to improve geological
modelling and potentially expand the current Mineral Resources.
Observation from the drilling results obtained post -2016 resource modelling highlights the continuation
of high-grade gold mineralization at the BRC2/BRC3 gap and the BRC3/BRC4 gap, and probable steepening
of the deposit on the eastern shear structure indicates potential dip extension.
The gold mineralization at BRC2, BRC3, and BRC4 is hosted in two main west and east shear structures
(Figure 5) that swell and pinch along strike and down dip. The large volume of high -grade gold
mineralization is enriched along the bend of the shear or trap by antiforms or other cross structures at
depth.
Figure 4. Typical cross section through Buffalo Reef Central Pit 2 and Pit 3 gap at 3650mN looking north
(80m wide window, note the limited drilling).
6 | 19
Figure 5: Shows the mineralized gold domains (actual ore mined at mRL500, mRL475, and mRL450)
hosted within western and eastern shear structures at BRC 2, BRC 3, and BRC 4.
Buffalo Reef Expansion Drilling - Stage 2
Stage 2 Buffalo Reef drilling program focuses on mine expansion target Areas with potential to define new
mineralized zones and structural and down dip extensions to mineralization outside of the expanded pit
shell (Figure 3).
A total of 36 holes for 5,012m of drilling is planned for Stage 2 to expand the current Mineral Resources,
especially in the gaps between and underneath the existing Buffalo Reef BRC2, BRC3, and BRC4 pits
outside of the expanded pit shell.
The drill programs are being completed by Monument’s own drilling crews and equipment using
predominately PQ (large) and HQ (medium) diamond drilling technique, supplemented with minor RC
drilling. This technique provides continuous rock samples that are the n studied to analyze mineral
content, rock types, and geological structures. The entire length of each hole will be half core sampled.
7 | 19
To meet the completion schedule, two additional outsource drill rigs were engaged in mid -November
2025, bringing the total to 4 rigs for the mine expansion drilling program.
At the BRC3/BRC4 gap, shallow sub-surface gold mineralization has been intersected in:
• MBRRC579: 22m @ 0.86g/t from 2m including 1m @ 1.41g/t Au from 2m and
6m @ 1.9g/t Au from 8m
• MBRDD611: 3m @ 4.66g/t Au & 1.28%Sb from 6.9m
Note: the reported intervals are downhole lengths and do not represent true widths.
MBRDD611 intersection occurs 20m along strike of a previously modelled gold structure. MBRRC579
intersected is an isolated mineralization in the FW to modelled ore structures. Both intersections occur
outside of the current geology model, the results are still being assessed to gain a complete understanding
of their impact.
Five (5) holes were drilled as part of Buffalo Reef Expansion drilling (Figure 2) returned positive results:
• MBRRCDD01: 5m @ 2.01g/t Au & 0.47%Sb from 149m and
1m @ 1.14g/t Au & 0.2%Sb from 160m
• MBRRCDD02: no significant result
• MBRDD600: 4m @ 3.42g/t Au & 0.49%Sb from 55m
• MBRDD601: 7m @ 4.79g/t Au & 0.61%Sb from 43m includes
5m @ 6.33g/t & 0.79%Sb from 45m
• MBRDD602: 3m @ 1.82g/t Au & 0.61%Sb from 22m and
8m @ 2.17g/t & 0.30%Sb from 26m
Note: the reported intervals are downhole lengths and do not represent true widths.
MBRRCDD01 intersected mineralization outside and along strike of the previously modelled gold
structure. MBRDD600, MBRDD601 and MBRDD602 (Figure 6) confirmed existing but poorly drilled gold
structures. Identification of gold ounces within the gap zone will enable the pits to be combined and
expanded, which may inform future LOM planning subject to further studies . The reported intervals are
downhole lengths and do not represent true widths. True widths will be determined once geological
modelling has been completed.
Assay results are yet to be received for MBRDD612, MBRDD615, MBRDD616, MBRRC610, MBRRC611 and
MBRRC612 testing BRC2/BRC3 gap and, MBRDD614, MBRRC580 and MBRRC581 testing the BRC3/BRC4
gap. These results will be reported once received.
8 | 19
Figure 6. Cross-section through Buffalo Reef Central Pit 3 at 3880mN looking north (40m wide
window) and depicting historic drilling and recently completed MBRDD600, MBRDD601, and
MBRDD602, and 2 main mineralization targets related to the eastern and western shear zone.