The strategy is going as planned: in the September quarter, North Mara produced almost 90,000 ounces of gold, a 24% increase year-on-year.

The company said its cash was up 19% on the prior quarter to US$74 million.

The 63%-owned Barrick subsidiary, which could see an improvement in its fortunes with Mark Bristow on its side, produced 136,640oz in total in the three months to September 30.

The concentrate-producing mines at the centre of Tanzania's export fraud allegations, which are still not resolved, contributed a combined 47,000oz from the tailings and stockpile processing.

Interim CEO Peter Geleta (whose stint is now almost a year long) said North Mara's production would get Acacia over its guidance.

"We are very pleased to report a strong operational performance for the year to date, delivering 391,000 gold ounces in the nine months to the end of September 2018," he said.

"As a result, we expect to exceed the upper end of our full year production guidance range of 435,000 to 475,000 ounces and are now targeting production to be marginally in excess of 500,000 ounces for the full year."

Acacia's share price was up 3.5% on the results to £1.49 (US$1.95), and up around 50% in the past month.