DPM Metals Announces Discovery of High-Grade Porphyry Mineralization Adjacent to Chelopech Mine; Results include 713 Metres at 2.52 g/t AuEq (comprising of 1.31 g/t Au and 1.16% Cu)
p.1 DPM Metals Announces Discovery of High-Grade Porphyry Mineralization Adjacent to the Chelopech Mine; Results include 713 metres at 2.52 g/t AuEq
(comprising of 1.31 g/t Au and 1.16% Cu)
News Release
DPM Metals Announces Discovery of High-Grade Porphyry Mineralization Adjacent to
Chelopech Mine; Results include 713 Metres at 2.52 g/t AuEq (comprising of 1.31 g/t Au and
1.16% Cu)
Toronto, Ontario, June 3 , 202 6 – DPM Metals Inc . (TSX: DPM , ASX: DPM ) (ARBN: 689370894) (“DPM” or “the
Company”) is pleased to announce a major new discovery of high -grade, gold-copper porphyry
mineralization at the Brevene South Porphyry (“BSP”) target, located in the southeastern part of the
Company’s Brevene exploration licence and contiguous with the Chelopech mine concession.
Highlights include:
• Major new discovery of a high-grade gold-copper porphyry system: Initial results from drilling
program at BSP demonstrate potential for scale and continuity with broad, continuous intervals of high-
grade gold-copper porphyry mineralization.
• Selected intercepts include:
▪ EX_BRESPO_03: 713 metres grading 2.52 g/t AuEq, comprising of 1.31 g/t Au and 1.16% Cu from
1,172 metres downhole, including 398 metres grading 3.00 g/t AuEq, comprising of 1.48 g/t Au and
1.45% Cu from 1,487 metres downhole (hole ongoing).
▪ EX_BRES_555_02: 95 metres grading 0.93 g/t AuEq, compris ing of 0.43 g/t Au and 0.48% Cu
from 1,250 metres downhole.
▪ EX_BRES_555_02A: 37 metres grading 1.19 g/t AuEq, comprising of 0.53 g/t Au and 0.63% Cu
from 1,357 metres downhole (hole ongoing).
See Table 1 and associated footnotes for full results from drilling and for details on the gold equivalent
calculation.
• Target remains open: The BSP is located approximately one kilometre from existing Mineral Reserves
and contiguous to the Chelopech mine concession. A large phyllic alteration envelope exceeding 1,000
metres by 1,500 metres indicates a substa ntial hydrothermal system, with the BSP target remaining
open for expansion.
• Intensive ongoing drill program: Given the significance of the BSP discovery, drilling continues with
the aim of expanding known mineralization, with five high-capacity drill rigs dedicated to the target and
up to 15,000 metres planned through the end of 2026.
• Fourth significant discovery by DPM since 2023: Together with the discoveries of Čoka Rakita ,
Dumitru Potok and the Wedge Zone, the Company’s exploration success demonstrates the quality of its
exploration team and the geological potential of the Western Tethyan Belt.
“The Brevene South Porphyry target is emerging as a significant gold-copper discovery. These results
demonstrate both the grade and scale of the target, with over 713 metres grading 2.52 grams per tonne
gold equivalent over a broad, continuous interval of mineralization,” said David Rae, President and Chief
Executive Officer of DPM Metals.
p.2 DPM Metals Announces Discovery of High-Grade Porphyry Mineralization Adjacent to the Chelopech Mine; Results include 713 metres at 2.52 g/t AuEq
(comprising of 1.31 g/t Au and 1.16% Cu)
“This represents an extraordinary moment for DPM and our shareholders as our team continues its
remarkable track record, delivering our fourth significant new discovery since 2023. The BSP discovery has
confirmed our geological understanding within a known mineral belt containing several significant deposits
and which remains open to further extension.
“Given the significance of this discovery, up to 15,000 metres of additional drilling is planned through the
end of 2026, to further define the footprint of the mineralization and allow for a more rapid assessment of
the economic potential of this area.”
Discovery of a high-grade gold-copper porphyry
As part of an intensive exploration program aimed at expanding the mineral resource inventory of the
Chelopech mine, deep drilling commenced earlier this year in the southeastern part of the Brevene licence.
The current drilling phase follows an internal target-generation initiative that re-evaluated existing data from
previous exploration campaigns, including all deep exploration drillholes below and proximal to the existing
orebodies. By integrating exploration geochemistry datasets, hyperspectral mineralogical data and
geophysical models with geological observations, vectors toward a porphyry center were identified and the
BSP target area was defined. Alteration data further outlined a large phyllic alteration envelope exceeding
1,500 metres by 1,000 metres, which has been traced from the southeastern part of the Chelo pech mine
concession into the southern part of the Brevene exploration licence (Figure 1 ). This large, continuous
alteration footprint indicates a significant hydrothermal system and provides the basis for ongoing drill
testing at BSP.
As part of this program , drillhole EX_BRESPO_03 intersected high-grade gold -copper porphyry
mineralization from 1,172 metres downhole depth, approximately 1,000 metres vertically below surface at
an elevation of -380 metres, on the southeastern flank of the Chelopech mine (Figure 2).
At the time of this news release, EX_BRESPO_03 has returned an interval of 713 metres at an average
grade of 2.52 g/t AuEq (1.31 g/t Au and 1.16% Cu; see Table 1) from 1,172 to 1,885 metres downhole. This
interval demonstrates strong downhole continuity of gold -copper mineralization over the portion of the
system tested to date. The hole remains in progress and has now reached a depth of 2,031 metres
downhole, continuing in strongly altered and intensely mineralized intrusive rock.
The mineralization is hosted by a strongly altered porphyritic intrusion and is associated with a high density
of quartz -dominated stockworks and sheeted veins, locally resulting in “brain rock”-style replacement
textures. Early-stage potassic alteration and quartz veining are overprinted by a chlorite-mica-magnetite-
quartz-anhydrite assemblage. Both stages host abundant chalcopyrite-pyrite mineralization, occurring in
quartz-sulphide-magnetite veins and as disseminations in the groundmass (Figure 3).
p.3 DPM Metals Announces Discovery of High-Grade Porphyry Mineralization Adjacent to the Chelopech Mine; Results include 713 metres at 2.52 g/t AuEq
(comprising of 1.31 g/t Au and 1.16% Cu)
As part of the same program, drillhole EX_BRES_555_02 was designed to test the northern part of the
target area from an underground location within the Chelopech mine. Below 1,100 metres , drilling
intersected a transition from high-temperature advanced argillic alteration into a more phyllic-type
assemblage marked by the presence of paragonitic muscovite . From approximately 1,250 metres depth ,
the interval becomes strongly silica-flooded, with trace potassic alteration and stockwork quartz -pyrite-
chalcopyrite-bornite bearing veins. Assay results from this zone returned 95 metres of porphyry-style
mineralization grading 0.93 g/t AuEq, comprising 0.43 g/t Au and 0.48% Cu. The hole was stopped before
reaching its planned depth due to technical limitations related to drill rig capacity.
EX_BRES_555_02A was designed as deeper extension of EX_BRES_555_02 and is being drilled as a re-
entry using a higher-capacity drill rig. At the time of this news release, t he hole has reached 1,443 metres
downhole, equivalent to approximately -600 metres elevation , and continues to intersect the same
prospective geological environment encountered at the end of EX_BRES_555_02. Drilling remains in
strongly silicified diorite, locally with weak, patchy chlorite alteration, and cut by a network of anhydrite veins
and locally intense quartz-pyrite-chalcopyrite vein ing. Mineralization is characterized by disseminated
chalcopyrite and pyrite, with rare bornite-pyrite-clay nests observed in the groundmass. Assay results to
date have returned an interval of 37 metres grading 1.19 g/t AuEq (0.53 g/t Au and 0.63% Cu; see Table
1) from 1,357 to 1394 metres downhole.
Drillhole EX_BRESPO_04A, designed to test the eastern part of the target area, has now been completed
at 1698.5 metres downhole. The hole ended in phyllic alteration , with no visible evidence of potassic
alteration observed. Assay results are pending.
These results confirm the presence of a significant porphyry system immediately southeast of the
Chelopech mine, distinguished by relatively high gold-copper grades for porphyry-style mineralization.
The scale of the alteration footprint, the presence of potassic alteration and stockwork veining, and the
downhole continuity of minerali zation collectively support s the interpretation of a large and vertically
extensive porphyry target at BSP. The target remains open and continues to demonstrate strong potential
for further expansion. Its proximity to existing Chelopech mine infrastructure highlights its potential to
support future mine life extension.
p.4 DPM Metals Announces Discovery of High-Grade Porphyry Mineralization Adjacent to the Chelopech Mine; Results include 713 metres at 2.52 g/t AuEq
(comprising of 1.31 g/t Au and 1.16% Cu)
Table 1. Drill intercepts from exploration drilling at the BSP target
HOLEID EAST NORTH RL AZ DIP
FROM TO LENGTH AuEq Au Cu
(m) (m) (m) (g/t) (g/t) (%)
EX_BRES_01A 7194 28751 682 340 -60 no significant intervals
EX_BRES_03A 6670 28888 688 170 -60 no significant intervals
EX_BRES_555_02 6639 30079 558 170 -60 1250 1345 95 0.93 0.43 0.48
including 1321 1333 12 1.67 0.74 0.88
EX_BRES_555_02A 6639 30079 558 170 -60
hole ongoing
1357 1394 37 1.19 0.53 0.63
EX_BRESPO_03 7192 28742 682 310 -72
hole ongoing
1172 1885 713 2.52 1.31 1.16
including 1487 1885 398 3.00 1.48 1.45
EX_BRESPO_04A 8037 29951 704 250 -58 completed / awaiting results
1) AuEq is calculated using the following formula: Au g/t + 1.05 x Cu%, based on a gold price of US$2,500 per ounce and a copper
price of US$3.85 per pound. The calculation assumes metallurgical recoveries of 90% for both metals, based on testwork from
other porphyry showings within the Chelopech mine camp.
2) Significant intercepts are reported using a minimum downhole width of 20 metres, a maximum internal dilution of 10 metres at a
0.7 g/t AuEq cut -off, whilst including intervals are reported using a minimum downhole width of 10 metres, a maximum internal
dilution of 5 metres at a 1.5 g/t AuEq cut-off. No upper cuts were applied.
3) Coordinates are in the Chelopech mine-grid.
4) Hole identified as EX_BRES_555_02A represents downhole extension of EX_BRES_555_02.
5) True widths have not been estimated at this time as there is insufficient drilling to determine the geometry of mineralization.
Next Steps
Preliminary interpretation of logged alteration assemblages and newly received drilling results, together
with existing geophysical data, suggests that the footprint of the BSP target is significantly larger than
initially anticipated and continues to expand as drilling progresses. To further define the extent of
mineralization at BSP, DPM has planned up to 15,000 metres of additional drilling in 2026 to further
appraise the target.
In addition to ongoing drilling at BSP, DPM currently has seven additional drill rigs deployed across the
Brevene licence area to test multiple target areas (Figure 4). Current work is focused primarily on the Vozdol
and Krasta Northeast epithermal targets, as well as the Sharlo Dere porphyry target, located in the northern
and northeastern parts of the licence. Since August 2025, DPM has completed a total of 40,000 metres of
drilling across the Brevene licence.
In parallel with ongoing exploration activities, DPM continues to progress the technical work required to
support conversion of the Brevene exploration licence to a mining concession under the well-defined
Bulgarian permitting process. Upon completion of the current phase of exploration work , which ends in
September 2026, DPM plans to submit a final report in support of a Commercial Discovery Certificate.
The key milestones in this regulatory process include recognition of a Commercial Discovery; submission
of a mining concession application ; environmental and other permitting requirements; and ultimately,
granting of a concession contract, all of which is subject to regulatory review and approval.
p.5 DPM Metals Announces Discovery of High-Grade Porphyry Mineralization Adjacent to the Chelopech Mine; Results include 713 metres at 2.52 g/t AuEq
(comprising of 1.31 g/t Au and 1.16% Cu)
Figure 1. Plan view of the Chelopech area showing deep dril l intercepts below -200 mRL, including newly
reported holes in bold, and the interpreted footprint of the mineralization. The silica envelope of high -
sulphidation (HS) type mineralization domains is projected from mine levels. The projected extent of
porphyry related phyllic and potassic alteration zones is estimated from drill core logging and geochemical
indicators, including elevated Mo, paragonitic muscovite and high Zr/Ti rations in the phyllic zone , and
elevated K/Al and/or magnetite in the potassic zone.
p.6 DPM Metals Announces Discovery of High-Grade Porphyry Mineralization Adjacent to the Chelopech Mine; Results include 713 metres at 2.52 g/t AuEq
(comprising of 1.31 g/t Au and 1.16% Cu)
Figure 2. Cross section (6000 E, 300 metres thick ) showing the location of the BSP intercepts as well as
the Wede Zone Deep (“WZD”) prospect, the existing high-grade domains and mine infrastructure.
p.7 DPM Metals Announces Discovery of High-Grade Porphyry Mineralization Adjacent to the Chelopech Mine; Results include 713 metres at 2.52 g/t AuEq
(comprising of 1.31 g/t Au and 1.16% Cu)
Figure 3. Images showing (a) the core photos from hole EX_BRESPO_03 between 1,585.1 m to 1,601.6 m
downhole depth, (b) close -up views of porphyry style of mineralization from within the interval. (Cpy –
chalcopyrite, Py – pyrite, Chl – chlorite, Ay – anhydrite, Se – sericite, Mt – magnetite).
p.8 DPM Metals Announces Discovery of High-Grade Porphyry Mineralization Adjacent to the Chelopech Mine; Results include 713 metres at 2.52 g/t AuEq
(comprising of 1.31 g/t Au and 1.16% Cu)
Figure 4. Plan view of the Brevene exploration licence , indicating the location of the BSP target in relation
to the Chelopech mine concession as well as additional targets on the Brevene licence.