Thermal coal retreated further to US$72.85 per ton Wednesday (May 31), but the commodity gaining 36.3% year-on-year. Other than weakness of crude oil, thermal coal was under pressure from higher production reports in major producing and exporting countries. Coal production in the United States, for example, grew 17.6% year-on-year in the first five months of 2017, significantly higher than estimates.To subscribe please click here