The modifications were made to 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 change was made due to the need to replace the ball mill electric motor, which PanTerra said on 23 November was not achieving its nameplate power.
PanTerra added the replacement ball mill motor, which will permit the plant to run at design throughput irrespective of the coarseness of feed, has arrived in the Dominican Republic.
This is expected to be installed during a planned two day maintenance shutdown next weekend.
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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