Shares in Jubilee Platinum PLC (LON:JLP) advanced as it took full operational control under its tailings deal with South African firm ASA and increased chrome processing there.
The firm said overall processing capability at the Dilokong chrome mine had increased to 75,000 tpm (tonnes per month) from 25,000 tpm.
Currently, the company is processing 55 tonnes of feed per hour, which will increase over the coming weeks, it added.
Jubilee has rights to the tailings from two chromite mines in South Africa and when both process plants are running expects to be processing 80,000 tonnes of ore each month to recover 33,000 ounces of platinum group metals per year.
And the firm said today its other tailings projects remained on target with all long lead time orders placed and initial construction was progressing satisfactorily.
Leon Coetzer, chief executive, told investors: "We are very pleased with progress on our tailings projects, particularly the increased chrome processing capability together with full operational control.
"This scenario will undoubtedly positively impact on all aspects of our chrome treatment business.
"We look forward to updating shareholders with real numbers as our operations progress."
The firm also noted that the increased capability potentially provided increased scope for the group to take on third party material to process.
Shares in Jubilee gained 5.31% to stand at 2.975p a pop.