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OMG NEWS RELEASE 1 Omai Gold Drills 5.89 g/t Au over 12.0m and 8.7 g /t Au over 4.6m at the West Wenot Target

Drill Results

OMG NEWS RELEASE 1

Omai Gold Drills 5.89 g/t Au over 12.0m and 8.7 g /t Au over 4.6m at the

West Wenot Target

November 13, 2023, Toronto, Ontario — Omai Gold Mines Corp. (TSXV: OMG) (OTC:OMGGF)

(“Omai” or the “Company”) announces further strong drill results from the Company’s Omai gold

project in Guyana. These new assays for diamond dr ill hole s 23ODD-066, -067 and - 068,

combined with the recent drill results further extend the multiple gold-zones of the Wenot deposit,

and are expected to positively impact the upcoming Mineral Resource update.

Highlights from these recent drill holes include:

• 5.89 g/t Au over 12.0 m

• 8.70 g/t Au over 4.6 m

• 2.45 g/t Au over 8.6 m

• 1.99 g/t Au over 8.1 m

• 1.33 g/t Au over 8.5 m

Elaine Ellingham, President & CEO, commented: “These results from the Wenot drilling, together

with the string of recent strong results, give an indication of the scope of untapped potential of the

Omai gold project . The grades and widths are very favourable for developing an open pit

operation, particularly considering the benefits of a brownfields project such as Omai. We have

commenced our updated Mineral Resource Estimate, expected before year end. This will be the

third NI 43-101 Mineral Resource Estimate in less two years . Once completed, we will advance

towards a Preliminary Economic Assessment (“PEA”), with certain supporting studies already

completed or underway.”

“The 2023 drilling in addition to expanding the main gold zones at Wenot, has also outlined a wide

zone of gold mineralization within the southern sedimentary rock sequence. It appears to be

continuous from surface to a depth of at least 300m. Drilling suggests the gold zone increases in

width and grade with depth and may merge at depth with the gold zone at the Central Contact

Shear. This discovery is expected to have a positive impact on the upcoming resource estimate

and bolsters management’s belief that the West Wenot target area is well suited to open pit mining

(figure 5).

“Based on our work completed over the past two and a half years , we believe that the Omai

project is likely to be the next large-scale gold mine to open in Guyana. Brownfields projects can

generally expect accelerated timelines and lower capital costs, and Omai will benefit from existing

road access (soon to be fully paved), an existing tailings facility (that can be refurbished) and

known metallurgy and recoveries from past production. A mine at Omai would attract employees

from the local work force who have years of mining experience. The town of Linden, just 55 km

from the Omai property is a community with deep roots in mining, both from its origins in bauxite

mining and as the home to many of the former Omai gold mine employees. This community of

almost 40,000 people has the relevant skills for the many jobs that a large scale gold mine offers.”

OMG NEWS RELEASE 2

Diamond drill holes 23ODD-066 and -067 further test the extent of the West Wenot target area

that lies west of the past-producing pit (figure 1, table 2). Hole 23ODD-068 was drilled in the mid-

pit area but did not reach the planned depth , nonetheless intersected a few gold zones on the

north flank of Wenot. Results are detailed in Table 1. The Wenot shear corridor is 300-400m wide

along most of the 2.5 km strike extension and typically host s five main zones hosting gold

mineralization.

Table 1. Drill Results for Wenot - Holes 23ODD-066, -067 and -068

Hole From (m) To (m)

Gold

Grade

g/t

Intersection

(metres)

Grade x

Width

23ODD-066 34.8 38.4 0.55 3.6 2.0

117.3 125.9 2.45 8.6 21.1

197.7 202.3 8.70 4.6 40.0

Incl. 197.7 200 16.72 2.3 38.5

214 215.5 0.62 1.5 0.9

241.4 256 0.40 14.6 5.8

261 268.9 0.45 7.9 3.6

279.5 285.2 0.45 5.7 2.6

23ODD-067 45.3 47.4 2.13 2.1 4.5

110.6 114.5 1.81 3.9 7.1

174.5 178 1.60 3.5 5.6

185.2 193.3 1.99 8.1 16.1

242.8 245.5 1.21 2.7 3.3

276 288 5.89 12.0 70.69

Incl. 286 288 19.62 2.0 39.2

297.6 298.3 1.63 0.7 1.1

340.9 349 0.69 8.1 5.6

370 381.2 0.69 11.2 7.7

390.4 394.7 0.41 4.3 1.8

414.2 419.1 1.38 4.9 6.8

450.7 452.6 0.81 1.9 1.5

477.5 481 2.40 3.5 8.4

23ODD-068 170 178.5 1.33 8.5 11.3

252 254 6.85 2.0 13.7

313.7 314.6 1.87 0.9 1.7

*True widths vary as mineralization at Wenot is generally hosted within stockwork vein systems with alteration halos, with an estimated

true width range of 70-90%. Cut-off grade of 0.30 g/t Au, as appropriate for open pit deposits. Internal dilution < 5m.

Hole 23ODD-066 (figure 2) was a shallower test of the West Wenot target, approximately 500 m

west of the past-producing pit. This hole tests the zones 75 to 100m west and 100m above hole

-063. Hole 23ODD -063 (previously reported) intersected in aggregate 138m of gold

mineralization (>0.3 g/t Au), including 4.04 g/t over 31.1m and 2.0 g/t Au over 27.5m. Hole -066

intersected the Central Shear gold-zone at a vertical depth of 90m where it assayed 2.45 g/t Au

over 8.6m. The same zone, 100m deeper in hole 22ODD -039 assayed 2.32 g/t Au over 17.1m

and 5.58 g/t Au over 1.1m.

OMG NEWS RELEASE 3

Figure 1. Location of DDH 23ODD-066, -067 and -068

Further downhole in 23ODD-066, a 75-m wide sediment-hosted shear includes 5.89 g/t Au over

8.7m, 0.9 g/t over 13.0m, 0.40 g/t over 14.6m, 0.45 g/t over 7.9m. Approximately 50m above hole

-066, an older drill hole intersected the same zone, returning 1.23 g/t Au over 75.0m. P revious

shallow drill holes show continuity of this zone to surface. Further to the west, there is limited

drilling and focused on the central contact shear and the volcanic sequence to the north.

The 2024 program will step out and test for the extension of these wide sediment -hosted gold

zones both to the west as well as to the east, along the full extent of the Wenot deposit . These

zones have had very little attention in the past yet have the potential to add very significantly to

the Wenot resource along the full 2.5km strike (figures 1 and 5).

Hole 23ODD-067 (figure 3), immediately west of the past-producing pit, was drilled 100 m above

hole 22ODD-052. It was to confirm mineralization at shallower depths, and to fill a large undrilled

gap in the resource model. Hole -067 intersected mineralization in all five main gold zones:

1) the Rhyolite-Diorite dike zone includes 1.99 g/t Au over 8.1m, 1.81 g/t Au over 3.9 m and 1.6

g/t Au over 3.5 m, starting at a 70m vertical depth;

2) the Central Shear (feldspar porphyry-proto-mylonite zone) assayed 5.89 g/t Au over 12.0 m;

3) the Sediment-hosted zone roughly 60m across includes a number of intervals: 1.38 g/t Au

over 4.9m, 0.69 g/t Au over 8.1m, 0.69 g/t Au over 11.2m and 0.49 g/t Au over 4.3m. The

same zone 100m deeper in hole 22ODD-052 intersected 2.57 g/t Au over 33.9m;

The other zones include: 4) Volcanic-hosted quartz-ankerite veins on the north flank of the deposit

within the volcanic sequence, assaying 2.13 g/t Au over 2.1m, and 5) a Quartz feldspar porphyry

dike close to the southern limit of the Wenot shear, assaying 2.4 g/t Au over 3.5m.

Hole 23ODD-068 (figures 1 and 4) was drilled approximately 150m west of hole 23ODD-064 and

50m west of holes 21ODD-001 and -013. The hole was to test the central shear contact zone at

a greater depth and also to explore for the sediment-hosted zone in the central area of the Wenot

deposit.

OMG NEWS RELEASE 4

Two attempts were made to complete this hole without success, although three gold intervals

were encountered. Two zones within the northern volcanics were inte rsected, the first grading

1.33 g/t Au over 8.5m would appear to correlate with a wide zone 75m up-dip in hole 21ODD-001

that assayed 1.85 g/t Au over 22.5m. These gold zones identified on the northern flank of Wenot

should be explored with a series of short holes, as these are near surface and may represent

gold-bearing splays off the main structure. Hole -068 terminated at the beginning of the Rhyolite-

Diorite dike zone with one intersection of 1.87 g/t Au over 0.9 m, 13m before the hole terminated.

A follow up hole is planned in this area early in the next drill program.

Holes in this area represent the deepest intersections of the Wenot deposit: hole 23ODD -064

intersected 5.18 g/t Au over 20.2m at a vertical depth of ~450m, hole 21ODD -001 intersected

4.77 g/t Au over 22.0m at a depth ~300m and hole 21ODD-013 intersected 6.92 g/t Au over 19.0m

at a vertical depth of ~360m. These are significant as they indicate potential for increased grade

and width of zones at depth that could support later underground mining from the bottom of an

open pit operation.

The most recent NI 43-101 Mineral Resource Estimate for the Omai property, dated December

2, 20221 includes a Wenot resource of 756,600 indicated ounces of gold grading 1.34 g/t Au and

1,112,600 inferred ounces of gold grading 1.72 g/t Au. Importantly, 88% of this current Wenot

Mineral Resource estimate is above a 325m depth, while the deposit remains open at depth, and

is already confirmed by drilling to depths of at least 450m.

For the adjacent Gilt Creek deposit, the NI 43 -101 Mineral Resource Estimate i s 1,151,000

indicated ounces of gold grading 3.22 g/t Au and 665,000 inferred ounces of gold grading 3.35

g/t Au. The Gilt Creek deposit is open at depth, and drilling has confirmed that the mineralized

intrusive extends to depths of at least 967 metres.

Quality Control

Omai maintains an internal QA/QC program to ensure sampling and analysis of all exploration

work is conducted in accordance with best practices. Certified reference materials, blanks and

duplicates are entered at regular intervals. Samples are sealed in plastic bags. Samples from the

Wenot drilling were shipped to ActLabs and in some cases, MSALabs, both are certified

laboratories in Guyana, respecting the best chain of custody practices. At both laboratories,

samples are dried, crushed up to 80% passing 2 mm, riffle split (250 g), and pulverized to 95%

passing 105 μm, including cleaner sand. Fifty grams of pulverized material is then fire assayed

by atomic absorption spectrophotometry (AA). Initial assays with results above 3.0 ppm gold are

re-assayed using a gravimetric finish. For samples with visible gold where initial assays do not

run above 3 g/t, a second pulp is made from the coarse reject and an additional fire assay

completed. Certified reference materials and blanks meet with QA/QC specifications.

Qualified Person

Elaine Ellingham is a Qualified Person (QP) under National Instrument 43- 101 "Standards of

Disclosure for Mineral Projects" and has approved the technical information contained in this news

release. Ms. Ellingham is not considered to be independent for the purposes of National

Instrument 43-101.

1 The Company filed an NI43-101 technical report titled “Technical Report and Updated Mineral Resource

Estimate of the Omai Gold Property, Potaro Mining District No. 2, Guyana” , prepared by P&E Mining

Consultants Inc dated December 2, 2022 on the SEDAR website www.sedar.com .

OMG NEWS RELEASE 5

ABOUT OMAI GOLD

Omai Gold Mines Corp. holds a 100% interest in the Omai Prospecting License that includes the

past producing Omai gold mine in Guyana, and a 100% interest in the adjoining Eastern Flats

Mining Permits. The Company announced an updated NI 43 -101 Mineral Resource Estimate

(“MRE”) October 20, 2022 that includes 1.9 million ounces of gold (indicated) and 1.8 million

ounces (inferred)1. Once South America’s largest producing gold mine, Omai produced over 3.7

million ounces of gold between 1993 and 2005. Mining ceased at a time when the average gold

price was less than US$400 per ounce. As a brownfields project, Omai benefits from good road

access and a wealth of historical data that provides knowledge of the geology and gold

mineralization on the property, as well as metallurgy , historical recoveries and many other

relevant mining parameters. The Company’s priorities are to compile results of the 2023 drilling

and proceed with an updated Mineral Resource Estimate that will form the basis of a Preliminary

Economic Assessment (PEA).

For further information, please see our website www.omaigoldmines.com or contact:

Elaine Ellingham P.Geo.

President & CEO

[email protected]

Phone: +1 416-473-5351

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain “forward- looking statements” under applicable Canadian securities

legislation. Forward-looking statements include, but are not limited to, statements with respect to the timing

of completion of exploration, trenching and drill programs, and the potential for the Omai Gold Project to

allow Omai to build significant gold Mineral Resources at attractive grades, and forward-looking statements

are necessarily based upon a number of estimates and assumptions that, while considered reasonable,

are subject to known and unknown risks, uncertainties and other factors which may cause the actual results

and future events to differ materially from those expressed or impli ed by such forward-looking statements.

Such factors include, but are not limited to general business, economic, competitive, political and social

uncertainties; delay or failure to receive regulatory approvals; the price of gold and copper; and the results

of current exploration. Further, the Mineral Resource data set out in the Omai Gold news release are

estimates, and no assurance can be given that the anticipated tonnages and grades will be achieved or

that the indicated level of recovery will be realized. There can be no assurance that forward- looking

statements will prove to be accurate, as actual results and future events could differ materially from those

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

statements. The Company disclaims any intention or obligation to update or revise any forward- looking

statements, whether as a result of new information, future events or otherwise, except as required by law.

OMG NEWS RELEASE 6

Figure 2. Cross-Section for Hole 23ODD-066

Table 2. Drill hole coordinates for holes 23ODD-066, -067 and -068

Hole ID Azimuth

(degrees)

Inclination

(degrees)

Final

Depth

(m)

Easting Northing Assay

Status

23ODD-066 196 -51 410.00 304375 601764 Reporting

23ODD-067 183 -50.5 491.00 304697 601843 Reporting

23ODD-068 182 -54 327.90 305483 601882 Reporting

OMG NEWS RELEASE 7

Figure 3. Cross-Section for Hole 23ODD-067

OMG NEWS RELEASE 8

Figure 4. Cross-Section for Hole 23-ODD-068

Figure 5. West Wenot Plan Map - Drill Hole Locations, Geology, and Mineralized Zones