That compared to the June quarter's 87,260oz when cash increased by $41 million.

Guidance for the financial year of of 355,000-380,000oz for an AISC of $1230-1300/oz has been maintained.

Regis faced various operational issues in the September quarter that impacted output, including processing plant problems at both Moolart Well (Duketon Northern operation) and Duketon Southern, as well as a series of "slips" at the Erlistoun pit that delayed scheduled access to higher grade ore.

Regis anticipates underground mining at Rosemont to be a key factor in delivering a production rate lift in the second half of the year.

Meanwhile, on the future development front, the company suggested the Garden Well underground prospect "continues to shape up as another potentially exciting addition to our internal production growth", with a prefeasibility study nearing completion.