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Adventus and Salazar Announce the Remaining Drill Hole Results from Pijili Project, Highlighted BY 18.55 Metres Grading 0.99% Copper, 0.25 G/T GOLD, 0.03% Molybdenum, 189.8 G/T Silver, and 0.23% Tungsten

Drill Results

Date:

News Release:

Ticker Symbols:

April 20, 2021

21-10

ADZN (TSXV), ADVZF (OTCQX), SRL (TSXV) SRLZF (OTCQB)

– 1 of 9 –

ADVENTUS AND SALAZAR ANNOUNCE THE REMAINING DRILL HOLE RESULTS FROM PIJILI PROJECT, HIGHLIGHTED BY

18.55 METRES GRADING 0.99% COPPER, 0.25 g/t GOLD, 0.03% MOLYBDENUM, 189.8 g/t SILVER, AND 0.23%

TUNGSTEN

Toronto, April 20, 2021 – Adventus Mining Corporation (“Adventus”) (TSX-V: ADZN , OTCQX: ADVZF ) and Salazar

Resources Limited (“Salazar”) (TSX-V: SRL , OTCQB: SRLZF ) (collectively the “ Partners”) are pleased to announce the

remaining exploration drilling results from the newly discovered Ensillada copper-gold-molybdenum porphyry system

(“Ensillada”) located within the 3,246-hectare Pijili project in central Ecuador. The maiden d rilling program finished in

March 2021 for a total of 7,031 metres on the first of multiple porphyry targets identified in the district (see news releases

from June 8, 2020 and April 8 , 2021). The Ensillada system is approximately 5.0 km south of the Chaucha copper -

molybdenum porphyry owned by Southern Copper Corporation.

Highlights:

• MERC-011 intersected a high-grade, near-surface silver-tungsten zone over 18.55 metres, grading 0.99% copper,

0.25 g/t gold, 0.03% molybdenum , 189.8 g/t silver and 0.23% tungsten, which overprinted the top of a broader

151.81 metres of porphyry mineralization grading, 0.25% copper, 0.08 g/t gold, 0.01% molybdenum, and 3.2 g/t

silver for 0.35% copper equivalent (“CuEq”)

• 10 of 12 drill holes intersected porphyry mineralization greater than 100 metres with mineralized widths ranging

between 100 to 424 metres

• Porphyry mineralization has been traced from the artisanal mine over a 2.0 km strike length to the northwest

• Fieldwork continues to follow-up the mineralized trend with manual test pitting tracing the surface expression of

porphyry mineralization

Jason Dunning, Vice President Exploration of Adventus, stated: “The Pijili project’s MERC-011 results come after substantial

technical work hunting for the newly discovered Ensillada copper porphyry system over the last two years on our Mercy

concession. Porphyry mineralization has been intersected in all our wide -spaced drill holes, so the entire Geology &

Exploration team can be extremely proud of this discovery. The results so far are a credit to our district scale approach for

the Pijili project and clearly show that our hunt has only just begun, as evidenced by our recent announcement of four new

targets on the Rosa de Oro and Carmen de Pijili concessions 8 km to the west of the Ensillada discovery.”

Drilling Results

Between July 2020 and March 2021, the Partners completed a total of twelve drill holes on the M ercy concession, all of

which hit porphyry-style copper-gold-molybdenum mineralization. Ten of the twelve drill holes intersected greater than

100 metres of porphyry mineralization ranging between 100 to 42 4 metres. The wide-spaced exploration drilling has

traced porphyry-style mineralization approximately 2 km from the artisanal mine site (see June 8, 2020 and October 26,

2020 news release) northwest to the northern Mercy concession boundary.

MERC-011 is located 1.2 km northwest from MERC-002 (which intersected 145.22 metres, grading 0.22% copper, 0.04 g/t

gold, 0.01% molybdenum and 1.0 g/t silver for 0.30% CuEq , see October 26, 2020 news release) , and about 280 metres

south of the northern property boundary. This drill hole yielded the best intercept of porphyry-style mineralization for the

project, in an area where manual test pits have defined a large area of copper sulphide minerals in bedrock including

chalcopyrite, minor bornite and trace covellite. A total of 125 samples have been collected at the bedrock interface noting

that 25 samples had greater than 0.10% copper with 8 of those samples having greater than 0.30% copper. One sample,

61053, located 45 metres northwest of the drill collar for MERC -011, graded 0.94% copper, 0.18 g/t gold, 0.01%

molybdenum, and 12.3 g/t silver.

Date:

News Release:

Ticker Symbols:

April 20, 2021

21-10

ADZN (TSXV), ADVZF (OTCQX), SRL (TSXV) SRLZF (OTCQB)

– 2 of 9 –

Drill hole MERC-011 was drilled in a northwest orientation and completed at 351.00 metres, intersecting porphyry-style

mineralization from surface (0.70 metres) to a depth of 152.51 metres, grading 0. 25% copper, 0.08 g/t gold, 0.01%

molybdenum, and 3.2 g/t silver ( 0.35% CuEq). A higher-grade subset occurs from 4.70 to 23.25 metres, grading 0.99%

copper, 0.25 g/t gold, 0.03% molybdenum, and 189.8 g/t silver.

Drill Hole

From

(m)

To

(m)

Thickness

(m)

Cu

(%)

Au

(g/t)

Mo

(%)

Ag

(g/t)

CuEq (2)(4)(5)

(%)

W

(%)

Approx. True

Thickness (m)

MERC-011 0.70 152.51 151.81 0.25 0.08 0.01 3.2(5) 0.35 - (3) (1)

including 4.70 23.25 18.55 0.99 0.25 0.03 189.8 - 0.23 (6) (1)

including 10.28 23.25 12.97 1.16 0.30 0.03 268.0 - 0.33 (6) (1)

including 16.30 23.25 6.95 0.76 0.13 0.03 483.7 - 0.61 (6) (1)

Notes:

(1) Due to the early stages of the project and limited geological information, it is impossible to accurately interpret an approximate true thickness

(2) Metal equivalency based on US$4.08/lb Cu, US$1,702.80/oz Au, US$12.30/lb Mo, and US$25.27/oz Ag; noting that no adjustments were made in the metal

equivalency calculation for metal recovery. Prices taken from 6-month contracts for precious metals and 3-month contracts for base metals from the London

Metal Exchange, dated April 6, 2021.

(3) There is no reportable tungsten (W) outside of the higher-grade subset interval of 4.70 to 23.25 metres.

(4) Tungsten is not used in any CuEq calculations for MERC-011 or any other drill hole from this program as the high-grade silver-tungsten is an overprint event.

(5) Due to the overprinting high-grade silver-tungsten event, silver content for the main porphyry system composite is capped at 20.0 g/t.

(6) Composite includes one sample (MC003598) that is reported at upper threshold of 1.00% tungsten and it is still undergoing overlimit testing at laboratory.

An interesting component of the higher-grade subset interval for MERC-011 is the presence of significantly elevated silver

and tungsten, which has not been seen in other completed drill holes. The association of tungsten to the porphyry system

in this particular case is unknown at this time but it currently interpreted to be a separate, overprinting mineralizing event

to the main Ensillada porphyry system. The tungsten appears to be directly linked to the high -grade silver values , with

four samples yielding tungsten values greater than 0.02%, which triggered overlimit testing. The overlimit testing yielded

a range of tungsten values from 0.29% to one value greater than 1.00%. The one sample with more than 1.00% tungsten

triggered another overlimit test, but results are not available currently. Using available results, the higher-grade subset in

MERC-011 has a tungsten grade of 0.23% from 4.70 to 23.25 metres with silver grading 189.8 g/t. Tungsten is commonly

found in greisen and skarn systems, occurring mainly as wolframite (iron–manganese tungstate (Fe,Mn)WO4, which is a

solid solution of the two minerals ferberite FeWO4, and hübnerite MnWO4) and scheelite (calcium tungstate ( CaWO4).

Other tungsten minerals range in their level of abundance from moderate to very rare. No mineralogical work has been

done to characterize the tungsten-hosting mineral in MERC-011.

MERC-004 was designed to further evaluate the hydrothermal breccias of the Zambohuaycu showing and those

intersected in MERC-002 (see October 26, 2020 news release). Two zones of hydrothermal breccia were intersected from

22.20 to 66.70 metres and from 72.40 to 79.08 metres. Both intervals contain variable concentrations of s ulphide

mineralization (chalcopyrite, pyrite, ± bornite, and ± molybdenite) and display biotite, chlorite, and sericite alteration. As

seen in MERC-002, sporadic sulphide mineralization is present in both the feldspar porphyritic and hornblende porphyritic

phases of the diorite intrusion below the upper hydrothermal breccia intervals.

Date:

News Release:

Ticker Symbols:

April 20, 2021

21-10

ADZN (TSXV), ADVZF (OTCQX), SRL (TSXV) SRLZF (OTCQB)

– 3 of 9 –

Drill Hole

From

(m)

To

(m)

Thickness

(m)

Cu

(%)

Au

(g/t)

Mo

(%)

Ag

(g/t)

CuEq (2)

(%)

Approx. True

Thickness (m)

MERC-004 24.20 133.60 109.40 0.19 0.04 0.01 1.1 0.24 (1)

including 40.20 91.16 50.96 0.32 0.06 0.01 1.1 0.39 (1)

including 72.15 79.08 6.93 0.77 0.16 0.01 2.4 0.92 (1)

Notes:

(1) Due to the early stages of the project and limited geological information, it is impossible to accurately interpret an approximate true thickness

(2) Metal equivalency based on US$4.08/lb Cu, US$1,702.80/oz Au, US$12.30/lb Mo, and US$25.27/oz Ag; noting that no adjustments were made in the metal

equivalency calculation for metal recovery. Prices taken from 6-month contracts for precious metals and 3-month contracts for base metals from the London

Metal Exchange, dated April 6, 2021.

MERC-005 was drilled from the same platform as MERC-003 and designed to test the area northeast of the Zambohuaycu

showing. It intersected three phases of the diorite intrusion, a hornblende phyric phase from 10.50 to 416.55 metres, a

feldspar phyric phase from 422.30 to 456.63 metres, and a quartz -rich phase from 463.04 to end of drill hole at 686.40

metres. Hydrothermal breccia was present from 167.15 to 1 79.75 metres. This drill hole displays stronger hydrothermal

alteration and higher aggregate quartz dominant vein content (A-, B-, and AB-type) signatures relative to the prior holes

located to the south. The pyrite ratio increases with depth, meaning chalcopyrite decreases and trails off after 500 metres,

where pyrite shows a marked increase.

Drill Hole

From

(m)

To

(m)

Thickness

(m)

Cu

(%)

Au

(g/t)

Mo

(%)

Ag

(g/t)

CuEq (2)

(%)

Approx. True

Thickness (m)

MERC-005 14.80 438.31 423.51 0.07 0.03 0.00 0.4 0.10 (1)

including 103.80 191.80 88.00 0.10 0.04 0.00 0.4 0.14 (1)

including 115.85 139.15 23.30 0.15 0.06 0.00 0.7 0.21 (1)

including 268.20 289.40 21.20 0.17 0.06 0.00 0.9 0.23 (1)

including 281.40 283.40 2.00 0.79 0.27 0.00 3.2 0.99 (1)

Notes:

(1) Due to the early stages of the project and limited geological information, it is impossible to accurately interpret an approximate true thickness

(2) Metal equivalency based on US$4.08/lb Cu, US$1,702.80/oz Au, US$12.30/lb Mo, and US$25.27/oz Ag; noting that no adjustments were made in the metal

equivalency calculation for metal recovery. Prices taken from 6-month contracts for precious metals and 3-month contracts for base metals from the London

Metal Exchange, dated April 6, 2021.

MERC-006 targeted the porphyry-style veining mapped on surface 300 metres northeast of the Zambohuaycu showing

and to determine if hydrothermal breccia units could be traced over that distance . The drill hole remained in the

hornblende phyric diorite intrusion except for one narrow interv al of hydrothermal breccia (30.21 to 32.40 metres) and

two magmatic breccia intervals (55.20 to 77.60 and 161.46 to 162.77 metres). Sulphide mineral content in the drill hole is

variable, but the drill hole does contain minor chalcopyrite and pyrite mineralization.

Drill Hole

From

(m)

To

(m)

Thickness

(m)

Cu

(%)

Au

(g/t)

Mo

(%)

Ag

(g/t)

CuEq (2)

(%)

Approx. True

Thickness (m)

MERC-006 28.55 129.10 100.55 0.08 0.03 0.00 0.3 0.11 (1)

including 28.55 101.15 72.60 0.09 0.04 0.00 0.3 0.12 (1)

Notes:

(1) Due to the early stages of the project and limited geological information, it is impossible to accurately interpret an approximate true thickness

(2) Metal equivalency based on US$4.08/lb Cu, US$1,702.80/oz Au, US$12.30/lb Mo, and US$25.27/oz Ag; noting that no adjustments were made in the metal

equivalency calculation for metal recovery. Prices taken from 6-month contracts for precious metals and 3-month contracts for base metals from the London

Metal Exchange, dated April 6, 2021.

Date:

News Release:

Ticker Symbols:

April 20, 2021

21-10

ADZN (TSXV), ADVZF (OTCQX), SRL (TSXV) SRLZF (OTCQB)

– 4 of 9 –

MERC-007 targeted the Ensillada showing, 300 metres north of the Zambohuaycu showing. This is an area of extensive

quartz dominant stockwork mapped on surface, which is represented in the drill hole in top 175.00 metres with narrow

sections having between 10 to 30% veining. Copper sulphid e minerals are noted over the entire hole length; however,

the pyrite-chalcopyrite ratio remained high across two porphyry-style mineralization intercepts.

Drill Hole

From

(m)

To

(m)

Thickness

(m)

Cu

(%)

Au

(g/t)

Mo

(%)

Ag

(g/t)

CuEq (2)

(%)

Approx. True

Thickness (m)

MERC-007 4.80 402.19 397.39 0.09 0.04 0.00 1.0 0.13 (1)

including 4.80 18.80 14.00 0.27 0.24 0.00 3.2 0.45 (1)

516.15 678.30 162.15 0.07 0.01 0.00 2.0 0.11 (1)

including 569.80 570.31 0.51 0.49 0.72 0.80 253.0 5.41 (1)

Notes:

(1) Due to the early stages of the project and limited geological information, it is impossible to accurately interpret an approximate true thickness

(2) Metal equivalency based on US$4.08/lb Cu, US$1,702.80/oz Au, US$12.30/lb Mo, and US$25.27/oz Ag; noting that no adjustments were made in the metal

equivalency calculation for metal recovery. Prices taken from 6-month contracts for precious metals and 3-month contracts for base metals from the London

Metal Exchange, dated April 6, 2021.

The high-grade silver from 569.80 to 570.31 metres is also associated with zinc mineralization. This interval graded 2.88%

zinc over 0.51 metres. It is not uncommon to see such polymetallic veins associated with intrusion -related systems,

however, this is the only known zinc occurrence on the Mercy concession.

Following up on MERC -007 and drilling from the same platform, MERC -008 targeted the area between Ensillada and

Zambohuaycu showings south of MERC-007. This drill hole intersected numerous intervals of igneous breccia units but

importantly hit hydrothermal crackle breccia from 246 .00 to 329.50 metres downhole. For the first time, “shingle” or

“corn flake breccia” texture has been observed in the drill holes at Mercy concession, with minor chalcopyrite and trace

bornite associated. The hydrothermal alteration decreased in intensity with increasing depth.

Drill Hole

From

(m)

To

(m)

Thickness

(m)

Cu

(%)

Au

(g/t)

Mo

(%)

Ag

(g/t)

CuEq (2)

(%)

Approx. True

Thickness (m)

MERC-008 5.20 399.10 393.90 0.11 0.07 0.00 0.5 0.17 (1)

including 5.20 21.25 16.05 0.25 0.21 0.00 1.8 0.40 (1)

including 59.20 61.45 2.25 0.07 0.02 0.14 0.0 0.48 (1)

including 276.70 327.70 51.00 0.22 0.19 0.01 0.9 0.37 (1)

including 276.70 295.36 18.66 0.31 0.32 0.01 1.3 0.55 (1)

including 280.74 282.74 2.00 0.79 1.04 0.00 3.5 1.48 (1)

including 313.84 327.70 13.86 0.28 0.19 0.02 1.2 0.46 (1)

Notes:

(1) Due to the early stages of the project and limited geological information, it is impossible to accurately interpret an approximate true thickness

(2) Metal equivalency based on US$4.08/lb Cu, US$1,702.80/oz Au, US$12.30/lb Mo, and US$25.27/oz Ag; noting that no adjustments were made in the metal

equivalency calculation for metal recovery. Prices taken from 6-month contracts for precious metals and 3-month contracts for base metals from the London

Metal Exchange, dated April 6, 2021.

After manual test pits identified widespread porphyry mineralization in Zamboh uaycu Norte area, west along Ensillada

Ridge (see October 26, 2020 news release), MERC-009 was designed to target copper surficial anomalies associated with

the aerially extensive quartz vein stockwork mapped on surface 245 metres southwest of MERC-007 and MERC-008. It is

an area of low manganese (Mn) which is a very positive indicator , though centred on a large Mag netic Susceptibility 3D

inversion anomaly, likely linked to magnetite in the potassic alteration facies. Drill core logging noted a high percentage

Date:

News Release:

Ticker Symbols:

April 20, 2021

21-10

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of quartz-dominant veining in top 150 .00 metres of the drill hole with narrow sections, similar to MERC-007, having a

range of 10 to 30% quartz veining a high pyrite to chalcopyrite ratio. Importantly, this is the first drill hole with t onalite,

which is a key rocktype at the Chaucha copper-molybdenum deposit, approximately 5 km to the north.

Drill Hole

From

(m)

To

(m)

Thickness

(m)

Cu

(%)

Au

(g/t)

Mo

(%)

Ag

(g/t)

CuEq (2)

(%)

Approx. True

Thickness (m)

MERC-009 84.74 319.99 235.25 0.13 0.02 0.01 1.2 0.17 (1)

including 216.76 258.50 41.74 0.21 0.03 0.01 2.0 0.27 (1)

including 216.76 226.58 9.82 0.32 0.03 0.01 3.1 0.40 (1)

including 220.76 224.58 3.82 0.47 0.03 0.02 4.3 0.59 (1)

377.91 454.37 76.46 0.09 0.01 0.00 1.4 0.11 (1)

including 434.65 440.65 6.00 0.22 0.02 0.00 4.6 0.27 (1)

Notes:

(1) Due to the early stages of the project and limited geological information, it is impossible to accurately interpret an approximate true thickness

(2) Metal equivalency based on US$4.08/lb Cu, US$1,702.80/oz Au, US$12.30/lb Mo, and US$25.27/oz Ag; noting that no adjustments were made in the metal

equivalency calculation for metal recovery. Prices taken from 6-month contracts for precious metals and 3-month contracts for base metals from the London

Metal Exchange, dated April 6, 2021.

The concept design for the MERC-010 drilling location was to evaluate the rocks beneath an interpreted relict lithocap

where quartz pyrophyllite alteration had been mapped on surface. In general, the hydrothermal alteration and general

character of the veins was different from the other drill holes in this program, but as the drill hole increased in depth, both

biotite and chlorite alteration did increase, which also coincided with a decrease in the pyrite content and a slow increase

in chalcopyrite. Copper started to pick up around 227.00 metres downhole, and a thick interval of porphyry mineralization

was cored to 540.73 metres. This section of porphyry mineralization was the deepest intercept of the program.

Drill Hole

From

(m)

To

(m)

Thickness

(m)

Cu

(%)

Au

(g/t)

Mo

(%)

Ag

(g/t)

CuEq (2)

(%)

Approx. True

Thickness (m)

MERC-010 46.77 50.77 4.00 0.10 0.08 0.00 3.6 0.19 (1)

194.17 198.16 3.99 0.08 0.04 0.01 5.1 0.17 (1)

227.00 540.73 313.73 0.08 0.03 0.00 0.7 0.12 (1)

including 428.35 540.73 112.38 0.14 0.04 0.01 0.8 0.19 (1)

including 502.47 509.85 7.38 0.24 0.05 0.01 1.3 0.32 (1)

Notes:

(1) Due to the early stages of the project and limited geological information, it is impossible to accurately interpret an approximate true thickness

(2) Metal equivalency based on US$4.08/lb Cu, US$1,702.80/oz Au, US$12.30/lb Mo, and US$25.27/oz Ag; noting that no adjustments were made in the metal

equivalency calculation for metal recovery. Prices taken from 6-month contracts for precious metals and 3-month contracts for base metals from the London

Metal Exchange, dated April 6, 2021.

MERC-012 was the final drill hole of the program designed to target the magnetic anomaly at depth under the two small

artisanal mining concessions. It was setup 276 metres south of MERC -001 that intersected 64.60 metres, grading 0.1%

copper, 0.20 g/t gold, 0.03% molybdenum, and 4.1 g/t silver (see October 26, 2020 news release) . The drill hole was

terminated at 491.08 metres due to the southern concession boundary to open ground. For the most part, the drill hole

remained in hornblende phyric diorite, and only transitioned to quartz diorite at the end of the drill hole.

In terms of hydrothermal alteration, the intensity of alteration in MERC-012 increased downhole, which coincided with an

increase in magnetite modal content, thereby suggesting a possible transition towards potassic alteration at depth .

Sulphide content generally increased downhole even though like MERC-001 (see October 26, 2020 news release), the only

Date:

News Release:

Ticker Symbols:

April 20, 2021

21-10

ADZN (TSXV), ADVZF (OTCQX), SRL (TSXV) SRLZF (OTCQB)

– 6 of 9 –

notable porphyry mineralization occurred at the top of the drill hole ; however, if not for the concession boundary, th e

favourable geology and intensifying alteration would have justified pushing the drill hole deeper.

Drill Hole

From

(m)

To

(m)

Thickness

(m)

Cu

(%)

Au

(g/t)

Mo

(%)

Ag

(g/t)

CuEq (2)

(%)

Approx. True

Thickness (m)

MERC-012 8.00 50.11 42.11 0.09 0.18 0.00 1.0 0.21 (1)

including 29.23 34.27 5.04 0.10 1.35 0.00 1.3 0.96 (1)

including 42.11 46.11 4.00 0.27 0.01 0.00 0.4 0.28 (1)

322.95 334.87 11.92 0.13 0.04 0.00 1.8 0.19 (1)

including 322.95 326.93 3.98 0.23 0.07 0.00 3.1 0.31 (1)

Notes:

(1) Due to the early stages of the project and limited geological information, it is impossible to accurately interpret an approximate true thickness

(2) Metal equivalency based on US$4.08/lb Cu, US$1,702.80/oz Au, US$12.30/lb Mo, and US$25.27/oz Ag; noting that no adjustments were made in the metal

equivalency calculation for metal recovery. Prices taken from 6-month contracts for precious metals and 3-month contracts for base metals from the London

Metal Exchange, dated April 6, 2021.

Figure 1 illustrates the drill locations for the results of the nine drill holes outlined in this news release, as well as the three

previously released drill holes (see October 26, 2020 news release) . Drill collar location coordinates are summarized in

Table 1 at the end of this news release.

Next Steps

Given the positive results from the drilling program on the Mercy concession intersecting porphyry mineralization in all

twelve drill holes, the Partners are assessing opportunities for a second phase of e xploration drilling for later in 2021 o r

early 2022 to focus on expanding the areas of higher-grade mineralization. Future drilling would continue developing the

geological understanding of the new Ensillada porphyry system discovery. In the interim, fieldwork will continue advancing

the manual test pit program to further trace porphyry mineralization to aid with the definition of drilling targets. This work

on Mercy concession will run in parallel with the continued exploration on the Partners’ Rosa de Oro and Carmen de Pijili

concessions 8.0 km to the west where targets are being developed for possible drill-ready status (see April 8, 2021 news

release).

Technical Information and Quality Control & Quality Assurance (“QAQC”)

The Pijili project work program is being managed and reviewed by Vice President of Exploration for Adventus, Jason

Dunning, M.Sc., P.Geo., a Qualified Person within the meaning of NI 43 -101, who has also reviewed and approved the

technical and scientific information of this news release as accurate. Technical staff collect and process samples that are

securely sealed and shipped to Bureau Veritas (“BV”) in Quito for sample preparation that includes crushing and milling

to prepare pulps that are then split for shipment to their facility in Lima, Peru and Vancouver, Canada for analysis. All assay

data have undergone internal validation of QAQC; noting there is an established sampling control program with blind

insertion of assay blanks, certified industry standards and sample duplicates for the Pijili project.

A QAQC program i s also in place at BV and includes insertion of blanks, standards, and duplicate reanalysis of selected

samples. BV’s quality system complies with the requirements for the International Standards ISO 9001:2000 and ISO

17025: 1999. At BV, gold is analyzed b y classical fire assay techniques with an ICP -AES finish, and both silver and base

metals are analyzed by a 46 -element 4 acid digestion with ICP -MS technique. Overlimit pro tocols are in place for gold,

silver, copper, molybdenum, and zinc.

Date:

News Release:

Ticker Symbols:

April 20, 2021

21-10

ADZN (TSXV), ADVZF (OTCQX), SRL (TSXV) SRLZF (OTCQB)

– 7 of 9 –

Qualified Person

The technical information of this news release has been reviewed and verified as accurate by Mr. Jason Dunning, M.Sc.,

P.Geo., Vice President Exploration for Adventus, a non-Independent Qualified Person, as defined by NI 43-101.

About Adventus

Adventus Mining Corporation is an Ecuador focused copper -gold exploration and development company. Its strategic shareholders

include Altius Minerals Corporation, Greenstone Resources LP, Wheaton Precious Metals Corp., and the Nobis Group of Ecuador.

Adventus is advancing the El Domo copper-gold project through a feasibility study, while exploring the broader Curipamba district. In

addition, Adventus is engaged in a country-wide exploration alliance with its partners in Ecuador, which has incorporated the Pijili and

Santiago copper-gold porphyry projects to date. Adventus also controls an exploration project portfolio in Ireland with South32 Limited

as funding partner as well as an investment portfolio of equities in several exploration companies. Adventus is based in Toronto,

Canada, and is listed on the TSX Venture Exchange under the symbol ADZN and trades on the OTCQX under the symbol A DVZF.

About Salazar

Salazar Resources Limited is focused on creating value and positive change through discovery, exploration, and development in

Ecuador. The team has an unrivalled understanding of the geology in-country and has played an integral role in the discovery of many

of the major projects in Ecuador, including the two newest operating gold and copper mines. Salazar Resources has a wholly owned

pipeline of copper-gold exploration projects across Ecuador with a strategy to make another commercial discovery and farm-out non-

core assets. The Company actively engages with Ecuadorian communities and together with the Salazar fa mily it co -founded The

Salazar Foundation, an independent non- profit organization dedicated to su stainable progress through economic development. The

Company already has carried interests in three projects. At its maiden discovery, Curipamba, Salazar Reso urces has a 25% stake fully

carried through to production. At two copper -gold porphyry projects, Pijili and Santiago, the Company has a 20% stake fully carried

through to a construction decision.

Neither the TSX Venture Exchange nor its Regulation Servic es Provider (as that term is defined in the policies of the TSX Venture

Exchange) accepts responsibility for the adequacy or accuracy of this news release.

This press release contains “forward -looking information” within the meaning of applicable Canadian securities laws. Any statements

that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, ass umptions or

future events or performance (often, but not always, identified by words or phrases suc h as “believes”, “anticipates”, “expects”, “is

expected”, “scheduled”, “estimates”, “pending”, “intends”, “plans”, “forecasts”, “targets”, or “hopes”, or variations of such words and

phrases or statements that certain actions, events or results “may”, “cou ld”, “would”, “will”, “should” “might”, “will be taken”, or

“occur” and similar expressions) are not statements of historical fact and may be forward -looking statements.

Forward-looking information herein includes, but is not limited to, statements that address activities, events, or developments that

Adventus and Salazar expect or anticipate will or may occur in the future. Although Adventus and Salazar hav e attempted to identify

important factors that could cause actual actions, events, or results to di ffer materially from those described in forward -looking

information, there may be other factors that cause actions, events or results not to be as anticipate d, estimated, or intended. There

can be no assurance that such information will prove to be accurate, and actual results and future events could differ materially from

those anticipated in such information. Accordingly, readers should not place undue reliance on forward-looking information. Adventus

and Salazar undertake to update any forward-looking information except in accordance with applicable securities laws.

For further information from Adventus, please contact Christian Kargl- Simard, President and Chief Executive Officer, at

+1-416-230-3440 or [email protected]. Please also visit the Adventus website at www.adventusmining.com

and LinkedIn page at https://www.linkedin.com/company/adventus-mining-corporation.

For further information from Salazar, please contact [email protected].

Date:

News Release:

Ticker Symbols:

April 20, 2021

21-10

ADZN (TSXV), ADVZF (OTCQX), SRL (TSXV) SRLZF (OTCQB)

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Table 1: Drill Collar Information

Hole ID EAST NORTH ELEV AZIMUTH DIP DEPTH COMMENT

MERC-001 678454 9670625 3236 225 -80 915.00 Successfully completed per design

MERC-002 677819 9670884 2826 330 -70 630.66 Successfully completed per design

MERC-003 677978 9670933 2966 180 -50 369.51 Successfully completed per design

MERC-004 677819 9670884 2826 330 -85 465.00 Successfully completed per design

MERC-005 677978 9670933 2966 330 -50 686.00 Successfully completed per design

MERC-006 678081 9671017 2966 30 -60 669.79 Successfully completed per design

MERC-007 677812 9671296 3009 295 -75 747.57 Successfully completed per design

MERC-008 677812 9671296 3009 185 -60 610.00 Successfully completed per design

MERC-009 677614 9671151 2993 330 -75 554.00 Successfully completed per design

MERC-010 678479 9671655 3224 330 -90 541.00 Successfully completed per design

MERC-011 677511 9671413 2972 345 -65 351.00 Successfully completed per design

MERC-012 678557 9670369 3390 225 -75 491.08 Successfully completed per design

Notes:

(1) All drill holes are surveyed in UTM Datum (Provisional South American 1956, Zone 17)