In 2020, coal production fell to its lowest level since 1965
WEBJul 14, 2021 · One of the largest coalproducing mines by volume, Black Thunder, opened in Wyoming in 1977. Today, the Powder River Basin accounts for approximately 43% of all coal produced in the United States. Source: ... Coal production in West Virginia, the state with the secondmost coal output, fell by an even larger share than Wyoming .