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Omineca Begins Follow Up Diamond Drill Program at Wingdam

Exploration Programs

Omineca Begins Follow Up Diamond Drill

Program at Wingdam

SASKATOON, SK

,

Dec. 4, 2025

/CNW/ - Omineca Mining and Metals Ltd. (TSXV: OMM)

("Omineca" or the "Company") is pleased to announce that it has initiated its 2025 winter drill

program at the Wingdam exploration project in the Cariboo Mining District of south central

British

Columbia

. TerraLogic Exploration Inc. of

Cranbrook, BC

, who designed the winter 2024 drill program

(see

May 6, 2025

, news release), have provided a high priority follow up program for 2025. The drill

crew has been mobilized to conduct the 8 hole, 4,000 meter diamond drill program. Drilling is

expected to run through

December 2025

with results anticipated to be reported early in the new

year.

This exploration program continues to be based on the assumption that Lightning Creek may have

once flowed west to east before reversing to its present westward flow. The lode source of the rich

placer gold beneath Lightning Creek may be related to the Eureka Thrust Fault system, located

downstream (west) of the Wingdam underground placer project where 173.4 ounces of placer gold

was recovered from a single 2.4 meter wide by 23.5 meter long crosscut sample in 2012.

The previous 2024 program was successful in intercepting anomalous gold, copper, lead and zinc

concentrations located downstream from the Wingdam underground placer project. The anomalous

concentrations were associated with semi-massive to massive sulphides in ultramafic rocks,

mineralized quartz veins and veinlets, and the Eureka Fault zone and its peripheral structures.

This year's drill program is designed to follow up on the mineralization found in the 2024 program

with continuation drilling further to depth at elevations below the Wingdam underground placer

workings, specifically in areas (see news release

May 6, 2025

) down dip of mineralization in the

ultramafic unit intersected in WD24-37. Additional drilling will take place southeast of WD24-37 along

strike of the mapped Eureka Thrust Fault towards the UAV magnetic high. Other drilling will consist

of deep holes to determine if the quartz veins identified in holes WD24-38 to 40 continue at depth

(see Map 1).

Map 1

Pic 1 (CNW Group/Omineca Mining and Metals Ltd.)

A progress report from the mining contractor at the Wingdam underground paleoplacer project is to

follow and will be covered in a separate update.

Qualified Person

All scientific and technical information in this news release has been prepared by, or approved by

Stephen Kocsis

, P.Geo., Lead Geologist. Mr. Kocsis is a qualified person for the purposes of

National Instrument 43-101 - Standards of Disclosure for Mineral Projects.

About Omineca Mining and Metals Ltd.

Omineca Mining and Metals Ltd.'s flagship Wingdam gold exploration and placer recovery projects

are located along the Barkerville Highway 45 km east of the

City of Quesnel

. The Wingdam Property

includes mineral tenures totaling over 61,392 hectares (613 square kms) and in excess of 15 linear

kilometers of placer claims, both encompassing the Lightning Creek valley where topographic

conditions created thick layers of overburden, which preserved a large portion of a buried

paleochannel containing placer gold-bearing gravels. Omineca also has an exploration and diamond

drill program currently underway exploring for the potential multiple hard rock sources of the placer

gold at Wingdam.

Forward Looking Statements

This release includes forward-looking statements regarding Omineca and its business. Such

statements are based on the current expectations and views of future events of Omineca's

management. In some cases, the forward-looking statements can be identified by words or

phrases such as "may", "will", "expect", "plan", "anticipate", "intend", "potential", "estimate",

"believe" or the negative of these terms, or other similar expressions intended to identify forward-

looking statements. The forward-looking events and circumstances discussed in this release may

not occur and could differ materially with other factors beyond the control of Omineca. No forward-

looking statement can be guaranteed. Forward-looking statements and information by their nature

are based on assumptions and involve known and unknown risks, uncertainties and other factors

which may cause our actual results, performance or achievements, or industry results, to be

materially different from any future results, performance or achievements expressed or implied by

such forward-looking statement or information. Accordingly, readers should not place undue

reliance on any forward-looking statements or information. Forward-looking statements speak only

as of the date on which they are made and Omineca undertakes no obligation to publicly update or

revise any forward-looking statement, whether as a result of new information, future events, or

otherwise, except as required by applicable securities laws.

Neither 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.

SOURCE

Omineca Mining and Metals Ltd.

View original content to download multimedia:

http://www.newswire.ca/en/releases/archive/December2025/04/c2861.html

%SEDAR: 00031647E

For further information:

For further information, please contact: Tom MacNeill, President and

CEO, 306-653-2692

CO: Omineca Mining and Metals Ltd.

CNW 08:00e 04-DEC-25