Three states alone — Pennsylvania, Kentucky and
West Virginia — produce 52 % of the high - quality thermal and metallurgical
coal in the U.S. Coal output in all three of these states has been flat or in decline for many ye
coal in the U.S.
Coal output in all three of these states has been flat or in decline for many ye
Coal output in all three of these states has been flat or in decline for many years.
The 1992
output of lignite accounted for 22 percent of
coal production
west of the Mississippi River, with two - thirds from Texas and most of the balance from North Dakota.