Trains through Angola's Lobito critical mineral corridor suspended by floods https://www.reuters.com/sustainability/climate-energy/trains-through-angolas-lobito-critical-mineral-corridor-suspended-by-floods-2026-04-12/?taid=69dc0db55fcb6f0001a70b6a https://www.reuters.com/sustainability/climate-energy/trains-through-angolas-lobito-critical-mineral-corridor-suspended-by-floods-2026-04-12/?taid=69dc0db55fcb6f0001a70b6a