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Omineca Begins Placer Gold Recovery at Wingdam

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SASKATOON, SK, May 9, 2024 /CNW/ - Omineca Mining and Metals Ltd. (TSXV: OMM) (OTCBB: OMMSF) ("Omineca" or the "Company") is pleased to report that recovery and processing of gold bearing gravels has begun at the Wingdam Paleoplacer project located in the Cariboo Mining District in south central British Columbia. 10.25 ounces of placer gold with 90.9% Au purity (909 fineness) was recovered from the first ~2.5 meters of advance at the bedrock contact of the paleochannel in Crosscut #3. The initial thickness of the gravels exposed in the face overlying bedrock was approximately 0.5 - 1.0 meters which is expected to increase in thickness as the bedrock rim dips toward the center of the channel floor. These initial recoveries are still in large part at the bedrock interface and are comparable with recoveries in the similar peripheral area of the channel at the 2012 bulk sample ("Crosscut #1") location. Additional updates will be provided once the miners reach the anticipated highest gold grades across the central portion of the channel.

Omineca's joint venture partner, D&L Mining, has extended the haulage/access drift in bedrock approximately 70 meters downstream of the 2012 Crosscut #1 location with a slight downward slope to intersect the lower portions of the paleochannel floor. Crosscut #3 is being driven from the haulage/access drift approximately 30 meters downstream from Crosscut #1. In accordance with the engineered mine plan, D&L is implementing artificial ground support which includes a series of spilings (metal rods) encased in grout, which are being placed above the area to be mined within the paleochannel. Crosscut #3 is a 3.5 meter x 3.5 meter excavation that will span the entire width of the channel.

A second new crosscut heading, #4 has been driven from the haulage/access drift a further 20 meters downstream and is now near the bedrock/paleochannel contact ready for development in tandem with Crosscut #3.  Once both crosscuts have reached the center of the paleochannel, mining activities will be initiated both up and downstream from each crosscut within the channel.  In this type of paleochannel setting, the largest amount of placer gold tends to be in the lower points of the central portion of the paleochannel where through natural waterborne gravity sorting, the highest concentrations of heavier materials, like gold, settle. This feature was noted in the bulk sample crosscut where of the 173 ounces recovered from a 23.5 meter crosscut, approximately 75% of that amount was produced from a 5.5 meter section in the middle of the channel.