The merged company share's listing on the premium segment of the London Stock Exchange will start on October 27.
In Latin America, Rio Tinto operates in Chile, Peru and Brazil.
The Chilean council of ministers rejected the environmental permit request in August, but the minutes from that meeting were released last week.
Local communities would receive a greater share of mining royalty receipts to compensate for environmental damage and mining-related conflict under a bill by PRI party senator Esteban Albarrán.
In Brazil, continuing depressed construction activity has held demand recovery back in 2017 but a stronger recovery is expected in 2018, the World Steel Association said on Monday.
Peru's mining industry picked up the slack during a slow month for the local economy, while rising public spending boosted construction.