ULAANBAATAR, Mongolia--(BUSINESS WIRE)--Rio Tinto and China's State Power Investment Corporation (SPIC) Qiyuan have launched a trial of battery swap electric haul truck technology at the Oyu Tolgoi copper mine in Mongolia. The trial is Rio Tinto's first use of battery swap electric haul trucks in surface mining operations. This is a major step towards developing the cost-effective technology and operational learnings required to reduce emissions from mining haulage fleets – one of the largest c. ...