Coal production… EIA

Here is the EIA on coal production: (http://www.eia.gov/todayinenergy/detail.cfm?id=26612)

“Coal production has declined because of increasingly challenging market conditions for coal producers. Electricity generation accounts for more than 90% of domestic coal use. In addition to complying with environmental regulations and adapting to slower growth in electricity demand, coal-fired generators also are competing with renewables and with natural gas-fired electricity generation during a time of historically low natural gas prices.
A 17% decrease in coal production from the previous quarter marked the largest quarter-over-quarter decline since the fourth quarter of 1984. Above-normal temperatures during the winter of 2015–16 were a key reason for the large decrease in coal production during the first three months of 2016. Throughout the fourth quarter of 2015, electric power plants received more coal than they consumed, leading to a net increase of 34 MMst in coal stockpiles, the highest fourth-quarter net increase on record.”