A shovel prepares to dump a load of coal into a 320-ton truck at the Black Thunder Mine, located within Wyoming's Powder River Basin, the nation' s most productive coal region. (AP/Matthew ...

As per the list, Black Thunder Mine and North Antelope Rochelle Mine in the US bagged the first and third spot, respectively, with an estimated production of 62.68 MT of coal and 56.25 MT of coal ...