[1][2] Located in Campbell County, Wyoming, about 65 miles (105 km) south of Gillette, it produced 85.3 million tons of coal in 2019.

[3][4] Peabody Energy opened the North Antelope Mine in the heart of Wyoming's Powder River Basin in 1983.

These two operations merged and North Antelope Rochelle ceded the title of largest mine to Black Thunder in 2012.

[8] This number has recently gone down, as Peabody Energy decided to reduce its workforce at the mine by 15% because of a downturn in the coal industry.

[16] Using the above figures, one hundred million metric tons of coal mined here are equivalent to 2.047 exajoules (5.69×1011 kWh) of heat energy.