Gold production for the month of July was 7,873 ounces, compared with 9,085oz for the entire June quarter.
The company recently acquired the Higginsville gold operation (HGO) as a processing source for its high-grade Beta Hunt mine at Kambalda.
RNC chairman and CEO Paul Andre Huit said July's production was an excellent result for its first full calendar month of consolidated operations following the acquisition.
"Material processed during July was comprised of Beta Hunt mined and stockpile, with excellent recoveries in the 92-94% range," he said.
"With the addition of HGO openpits, having a combination of feed sources provides the opportunity to blend feeds and optimise throughput and recoveries without having to clean out the entire mill.
"With Baloo openpit production commencing in early August, I look forward to the continued strong performance of the HGO mill. We anticipate providing production guidance in the coming weeks."
Toronto-listed shares in RNC rose 4.5% overnight to C46c, valuing the company at C$255.8 million.