Rio Tinto suspended all operations at its SimFer iron ore mine in Guinea following a fatal workplace incident on August 22, 2025. The comprehensive operational halt affects production schedules and supply chain deliveries while enabling thorough safety investigation and worker support. Incoming CEO Simon Trott plans immediate travel to Guinea, emphasizing safety as the main priority during this crisis. The incident involved a contracting company employee, creating complex responsibility dynamics for investigation procedures. This decisive response demonstrates Rio Tinto's commitment to safety culture over short-term production targets.