The operation in South Sumatra produced 4,470 gold equivalent ounces during the month, up from the previous record of 3,650 ounces in November 2017.
Tembang is on track to produce between 3,750 and 4,580 gold equivalent ounces per month throughout 2018.
Strategies to extend mine life
With progress being made on improving production, the company is increasingly focusing on extending mine life with two key strategies.
The first is a strategic alliance with Merdeka Copper Gold Tbk PT (IDX:MDKA) to provide additional funding and expertise to define new resources.
Another is the development of exploration tunnels to exploit known resources that extend beneath existing open pits and is largely self-funded from cash flow.
Sumatra has recently appointed Joe Dymott as general manager development and sees this as a key to accelerating plans to advance the new deposits towards production.
Drilling to target near-mine extensions
Drilling as part of the Merdeka alliance will start in mid-February using a track mounted diamond rig which is on site.
The program is targeting near-mine extensions that can be quickly exploited to feed the Tembang processing facility.
Twelve targets have been identified with the initial drilling expected to target Belinau SW.