North Bay Resources CEO Jared Lazerson joined Steve Darling from Proactive to share positive results from metallurgical studies conducted at the company’s Fran Gold Project in British Columbia. The studies demonstrated an impressive total gold recovery of 97%, achieved through a combination of 67% recovery by gravity separation and 30% by flotation.
The head grade, originally reported at 0.9 ounces per ton gold, was significantly upgraded during testing. Gravity concentration yielded 8.54 opt gold, followed by flotation results of 2.69 opt gold, producing a final combined concentrate of 11.23 opt gold—representing an extraordinary 12x concentration of the material.
Lazerson elaborated on the advanced methodologies employed, explaining that samples were digested using a three-acid microwave digestion system. This system applies precise microwave energy to heat the acid mixture evenly and rapidly, ensuring complete dissolution of the sample matrix. Following digestion, the emissions were analyzed using an optical emission spectrometer, enabling precise quantification of elements such as barium, calcium, cadmium, cobalt, chromium, copper, iron, potassium, lithium, magnesium, manganese, sodium, nickel, lead, strontium, and zinc.
The metallurgical grind study was conducted on 1,000-gram samples to determine the time required to achieve a target grind size of 90% passing 106 microns (um). Two portions of the material were milled accordingly and subjected to gravity separation and flotation testing, resulting in the exceptional recovery and concentration outcomes.
In addition to these metallurgical advancements, Lazerson provided updates on the loading and transportation of a 120-ton shipment of gold-bearing material to the company’s Bishop Gold Mill in California. The shipment, totaling 240,000 pounds, consisted of 82 super-sacks with an average weight of 2,900 pounds each. Lazerson highlighted that fewer sacks were required than anticipated, suggesting higher metal content, as gold at the Fran Project is often associated with up to 20% iron content. The first rail shipment has now been completed, with the initial load expected to arrive at its destination imminently.
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