Native Mineral Resources Holdings (ASX:NMR) said the latest gold smelt at its Blackjack operations in Queensland produced three doré bars totaling 296.6 ounces, according to a Wednesday filing with the Australian bourse.

The operations delivered about 2,331 ounces of refined gold during the third quarter, up from 1,268 ounces in the second quarter, per the filing.

Blackjack also saw an improvement in operating performance in the third quarter compared with the previous three-month period, as dry tonnes milled increased 5% to 70,987 tonnes, and the weighted reconciled head grade increased about 75% to 1.10 grams per tonne grade of gold.

Plant reliability also remained strong, with average mill availability increasing to over 99% from roughly 94%, the company said.

The gold and base metals company's shares fell nearly 2% in recent Wednesday trade.