Name the 14 states in U.S.A. which each produced in excess of 10 million short tons of coal in 2017 - the same number of states as in 2016, but with "one in, one out".
Source - U.S. Energy Information Administration
Total U.S. production was 774.12 million short tons from 24 states in 2017.
This compares to 896.9 & 728.3 million short tons in 2015 & 2016 respectively.