West Virginia had their historical high coal production in 2006. West Virginia also had the largest drop between their historical high and 2006 production. The approximate coal production in 2006 for West Virginia, Kentucky, Utah, and Texas were 150 million short tons, 131 million short tons, 11 million short tons, and 18 million short tons respectively. The five states with the highest historical coal production are West Virginia, Kentucky, Pennsylvania, Illinois, and Ohio. Around 25% of US states produce coal.