FILE PHOTO: Coal is unloaded onto large piles at the Ulan Coal mines near the central New South Wales rural town of Mudgee in Australia, March 8, 2018. REUTERS/David Gray/File Photo
FILE PHOTO: Coal is unloaded onto large piles at the Ulan Coal mines near the central New South Wales rural town of Mudgee in Australia, March 8, 2018. REUTERS/David Gray/File Photo