(marketscreener.com) By Rhiannon Hoyle Rio Tinto said on Tuesday it has approved a $77 million pre-feasibility study for the Rhodes Ridge iron ore project in Western Australia's Pilbara region, a development that could underpin the miner's giant iron-ore operations in the area for decades to come. The miner called Rhodes Ridge one of the world's best...https://www.marketscreener.com/quote/stock/RIO-TINTO-PLC-9590196/news/Rio-Tinto-Approves-Next-Study-for-Rhodes-Ridge-Iron-Ore-Project-45497543/?utm_medium=RSS&utm_content=20231204.