The Simandou mine, located in the Simandou mountain range in southeastern Guinea, is one of the world's largest untapped high-grade iron ore deposits. The project is divided into four blocks, with Blocks 1 and 2 controlled by a consortium led by the Singapore-based Winning International Group and the Chinese-backed SMB-Winning consortium, while Blocks 3 and 4 are held by a joint venture between Rio Tinto, Chinalco, and the Guinean government.

Despite its potential to revolutionize the global iron ore market and significantly boost Guinea's economy, the project has faced numerous challenges, including legal disputes, political instability, and concerns about environmental impact and local community displacement.