North Bay Resources Announces Operation of New Gravity Circuit at Bishop Gold Mill, California

Rhea-AI Summary

North Bay Resources (NBRI) has announced the successful installation and operation of new gravity separation and gold recovery equipment at its Bishop Gold Mill in California. The company is processing ore from its Fran Gold Project, with microscopic analysis showing significant gold recovery using a Knudsen Bowl concentrator.

Recent metallurgical studies from the Fran Gold Project demonstrated over 97% recovery rates, combining 67% by gravity and 29% by flotation. The head grade of 0.91 ounces per ton gold was upgraded to 8.54 ounces per ton through gravity separation, with additional flotation achieving 2.69 ounces per ton, resulting in a total concentrate of 11.23 ounces per ton.

The Fran Gold Project spans 34,360 acres and features a gold deposit extending 3,700 feet in length, up to 120 feet in width, and over 700 feet in depth. The property contains 3-4 parallel gold veins grading up to 2.6 troy ounces of gold per ton, with approximately 5,000 tons of surface material ready for shipment.

Positive

• Successful implementation of new gravity separation equipment showing significant gold recovery
• High metallurgical recovery rates exceeding 97% (67% gravity + 29% flotation)
• Substantial concentration achievement: 12x upgrade from 0.91 to 11.23 ounces per ton
• 5,000 tons of surface material ready for immediate processing
• Property contains high-grade gold veins up to 2.6 troy ounces per ton

Negative

• Final reagent for flotation circuit still pending delivery
• Processing results pending laboratory confirmation

BISHOP, Calif., Jan. 10, 2025 (GLOBE NEWSWIRE) -- North Bay Resources Inc. (the “Company” or “North Bay”) (OTC: NBRI) is pleased to announce the Company has acquired, installed and began processing ore from its Fran Gold Project using new gravity separation and gold recovery equipment at its Bishop Gold Mill. Microscopic analysis of the concentrate has shown significant recovery of gold (see Picture 1). Samples have been shipped to the Company’s Metallurgy Laboratory for assay and further analyses, prior to shipment to its gold refinery partner. The processing of gold continues. The concentrate was produced using centrifugal gravity recovery in a Knudsen Bowl. The Company is also adding a Gemini Table for further gravity concentrate and concentrate upgrading purposes as part of a switch to gravity primary operation with scavenger recovery by flotation. Commissioning of the flotation circuit is underway with the arrival of reagents earlier this week and one final reagent expected within 10 days.

Picture 1. Gold Concentrate from Knudsen Concentrator at Bishop Gold Mill

Metallurgy Study

Recent metallurgical recovery studies (see Press Release dated December 13, 2024) from Fran Gold Project ore totaled in excess of 97% from combined 67% by gravity and 29% by flotation have been reported. Head grade, reported at 0.91 ounces per ton gold, was upgraded by gravity to 8.54 ounces per ton gold with follow-on flotation of 2.69 ounces per ton gold producing a total concentrate of 11.23 ounces per ton, representing a 12x concentration.

Fran Gold Project

The Property is 34,360 acres and is located 20 miles from Centerra Gold’s 60,000 tonne per day Mt. Milligan Copper, Gold Mine (299Mt @ 0.22% Cu, .45 g/t Au). To date there has been in excess of 50,000 feet of diamond drilling in 104 holes at Fran, primarily at the Bullion Alley Zone. A gold deposit, 3700 feet in length, with width of up to 120 feet, and depth of over 700 feet has been delineated. The deposit contains 3 to 4 well defined parallel gold veins grading up to 2.6 troy ounces of gold per ton as well as wide sections of low and mid-grade gold in veins and disseminated in veinlets throughout the deposit. Surface trenching has identified a near surface sub-zone where the gold bearing veins swell and are accessible from surface. In addition, samples have assayed up to 1.68% copper and 5.1 troy ounces per ton silver. There is property wide potential for additional discoveries of gold and copper with numerous showings outside of the Bullion Alley Zone. There is approximately 5,000 tons of surface material available for shipment.

On behalf of the Board of Directors of

NORTH BAY RESOURCES INC.

Jared Lazerson
CEO

info@northbay-resources.com

northbay-resources.com

X: @NorthBayRes

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This news release may contain certain “Forward-Looking Statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 and applicable Canadian securities laws.

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/86e9d966-ce36-4b6d-a42a-072d4cced411

FAQ

What are the recovery rates achieved at NBRI's Fran Gold Project in January 2025?

The Fran Gold Project achieved over 97% total recovery rates, with 67% through gravity separation and 29% through flotation processing.

How much did NBRI's gravity separation process upgrade the gold concentration?

The process upgraded the gold concentration from 0.91 ounces per ton to 8.54 ounces per ton through gravity separation, achieving a total concentrate of 11.23 ounces per ton after flotation.

What is the size and location of NBRI's Fran Gold Project?

The Fran Gold Project is 34,360 acres and is located 20 miles from Centerra Gold's Mt. Milligan Mine, featuring a gold deposit 3,700 feet in length, up to 120 feet in width, and over 700 feet in depth.

How much surface material is currently available for processing at NBRI's Fran Gold Project?

Approximately 5,000 tons of surface material is currently available for shipment and processing at the Bishop Gold Mill.

What new equipment has NBRI installed at the Bishop Gold Mill in January 2025?

NBRI has installed new gravity separation equipment including a Knudsen Bowl concentrator and is adding a Gemini Table for gravity concentrate upgrading purposes.