PureGold achieves designed milling capacity, encounters lower than anticipated head grades
(Kitco News) - New Canadian gold producer Pure Gold Mining (TSX-V:PGM, LSE:PUR) reported today that since late January, the milling facility at the PureGold mine, located in Ontario, Canada, has been operating at greater than 75% of nameplate capacity, including multiple consecutive days at greater than 800 tpd and a peak daily throughput of 897 tpd.
The company said that gold recoveries have been exceptional and consistent throughout the ramp-up period, averaging 95%, in line with expectations. With the milling facility now fully ramped up, the company’s focus will shift to aligning the mill throughput with the rate of ore production from underground as the mine continues to access higher grade ore and progress toward steady state production.
As of the end of the first quarter, the mine continues to ramp-up to steady state production. Realized head grades for the first quarter were lower than anticipated due to ramp-up related issues including unplanned dilution in the first longhole stopes blasted by the company.
The company added that it has taken actions to reduce dilution and improve recovery which are expected to result in head grades improving in the second quarter and beyond.
In addition to lower than anticipated head grades from initial production stopes, mine scheduling flexibility was limited during the first months of ramp-up due to the temporary single-ramp nature of the mine. With limited high grade stope inventory, low grade stockpiles were processed to supplement mill feed during the first quarter of 2021 to ensure the ramp-up of the mill continued uninterrupted.