Output in the current quarter is being put at 11,500-13,000oz, with targeted AISC costs understood to be circa $1150-1300/oz.
Pantoro is delivering 2000oz into a hedge book this month at $1731/oz and 2000oz per month at $1800/oz thereafter until April next year.
Output in the September quarter was impacted by the underperformance of the Wagtails orebody - where mineralisation widths have been narrower than expected - and water issues in the drought impacted Kimberley region that saw processing impacted.
However new bores have rectified the latter issue.
The mining review is expected to take 6-8 weeks and is focused on "optimising mine production levels, resources and most importantly profitability".
In the past Halls Creek has been promoted as being capable of a quarterly run-rate of 20,000-25,000oz per quarter.
Meanwhile, at the recent 50% Norseman project acquisition, three rigs are on site as Pantoro looks to identify ounces to potentially be mined in 2021.
A scoping study is expected to be completed in the current quarter.
Debt-free Pantoro started the December quarter with $42.4 million in cash and gold.
Shares in Pantoro were down 17% to 15c in midday trade, capitalising the company at $176 million.
The stock has dropped about 30% over the past couple of months.