Trains carrying loads of coal bring with them higher rates of asthma, heart disease, hospitalization and death for residents living nearest the rail lines.
The world's largest listed miner said iron ore production from mines it operates in Western Australia on a 100% basis was 68.1 million tonnes during the three months ended March 31.
The final rule lowers the permissible exposure limit of respirable crystalline silica to 50 micrograms per cubic meter of air for a full-shift exposure.