Jubilee Platinum (LON:JLP) shares added over 9% as it said the tailings plant at ASA Metals' Dilokong chrome mine in South Africa was commissioned and operating.
The ramp-up has reached 85% of design throughput with the feed rate reaching an extrapolated 21 000 tons per month compared to design of 25 000 tons per month, the firm said.
"The company will continue to update shareholders and remains focused in reaching full operational output during March 2016 while simultaneously advancing the construction of the significantly larger platinum and chrome surface processing project at the Hernic operations targeting a combined processing capacity of 80 000 tonnes of feed material per month," said Jubilee.
Shares added 9.16% to 3.575p.