Innovative conveyor upgrades improve safety and throughput at PNG gold mine glenn 31 March, 2020 Case studies Innovative conveyor upgrades improve safety and throughput at PNG gold mine. — Hidden Valley is an open pit mine, located in New Guinea’s high lying Morobe Province at an altitude of around 2500 metres. Client: Metso. View case study Tagged portfolio Post navigation Previous Previous post: Improving budgeting and forecasting in higher educationNext Next post: Gas dosing control for Microalgae Biotechnology Platform