Peabody Energy, headquartered in St. Louis, Missouri, is the largest private-sector coal company in the world. Its primary business consists of the mining, sale, and distribution of coal, which is purchased for use in electricity generation and steelmaking.
Peabody also markets, brokers, and trades coal through offices in China, Australia, the United Kingdom, and the United States.
In 2017, Peabody recorded sales of 191.5 million tons of coal. Peabody markets coal to electricity generating and industrial customers in more than 25 nations on six continents. As of December 31, 2017, the company had approximately 5.2 billion tons of proven and probable coal reserves.
Peabody maintains ownership of majority interests in 23 surface and underground mining operations located throughout the United States and Australia.
Peabody's largest operation is the North Antelope Rochelle Mine located in Campbell County, Wyoming, which mined more than 92 million tons of coal in 2016.
According to en.wikipedia