In 2018, U.S. coal production declined as exports and Appalachian region prices rose

EIA estimates that total 2018 U.S. coal production was 755 million short tons (MMst), 20 MMst less than in 2017 and 36% less than in the previous decade. In 2018, coal prices rose in three of the five major coal-producing regions, particularly the Northern and Central Appalachian regions. Although U.S. coal exports increased by about 10 MMst in 2018, volumes were not great enough to offset the decline in U.S. coal consumption, resulting in declining coal production.

Full article at eia.gov