Hill End Gold recorded a strong gold production result of 1,612 ounces from 5,673 tonnes of ore at its eponymous project in NSW during the September quarter.
According to the company’s quarterly results, the gold was extracted at the Hill End project at a grade of 9.4 grams per tonne.
The company also accelerated development to expand the project, located in the State’s central west region, to 100,000 tonnes per year.
Hill End Gold has upgraded its gravity gold recovery plant over the past year to continuously process more than 2000 tonnes per month with a gold recovery of over 95%.
When the plant was initially constructed in 2008, it was designed to process approximately 20 tonnes per day at a recovery rate of 80%, the company said.
Because the ore is graphitic and slaty and therefore difficult to process, the plant uses modified impact crushers to enhance material flow and to provide a high reduction ratio.
The slaty material tended to paste when crushed, so a number of crusher types and designs were tested to overcome feed and discharge issues, the company said.
According to the September results, plant capacity increased by 10% to over 100 tonnes per day in the quarter.
The resource estimates for the company’s Hawkins Hill – Reward deposit was also updated to 660,000 tonnes at a grade of 10.6 grams per tonne.
Underground samples from the Paxtons deposit have returned results of 500 ounces per tonne.