The diamond miner expects the restructuring to become effective in the first quarter of 2021.

The miner is in the process of relocating 25 chinchillas, while construction of the mine camp is undergoing.

Guinea's government is requiring the developers of Simandou to build a 650 km railway and a deepwater port to transport the ore.

Lucapa said Mothae's indicated diamond resource increased by 6.8 million tonnes to 9.2 million tonnes.

Production decrease comes as the miner's Porgera project in Papua New Guinea remained shut during the period

The reopening comes a year after previous owner Semafo shut it following an attack that killed 39 civilians.