The company will now feed tailings with finer particle size than has been recently delivered into the ball mill in the process plant, reducing the ball mill power requirements.
This is expected to start in two weeks with PanTerra using its second eight inch bucket wheel dredge to feed fine material to the plant.
The company had said on 23 November that it would have to replace the ball mill electric motor which is not achieving its nameplate power, which is required when grinding coarser material.
However, all other elements of the process plant are functioning as expected and PanTerra is confident the project will settle down to predictable and stable operating costs and recoveries once the ball mill problem is resolved.
The Las Lagunas project is expected to produce about 69,000 ounces of gold and 630,000 ounces of silver annually, with the pilot plant testwork demonstrating expected recovery of 435,360 ounces of gold and nearly 4 million ounces of silver over a six and a half year mine life.
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