力拓任命铁矿石业务负责人Simon Trott为新任首席执行官。

Group 1 - The core point of the article is that Rio Tinto has appointed Simon Trott, the head of its iron ore business, as the new Chief Executive Officer [1] Group 2 - The appointment of Simon Trott signifies a strategic leadership change within the company [1] - Trott's previous experience in the iron ore sector may influence the company's future direction and operational focus [1] - This leadership transition could impact investor confidence and market perception of Rio Tinto [1]