Uncertainty around the charter has deterred investment into a sector that accounts for 8% of gross domestic product in the world's top platinum producer
Barrick Gold Corp said a power station that supplies its Porgera gold mine had been damaged, while Ok Tedi Mining Ltd said a landslip had blocked a road and damaged pipelines to its copper and gold mine in the Star Mountains.
Industrias CH was fined 2.96 million pesos ($159,764) at the end of November for making “prohibited trades” under a law banning simulating price or volume.