Total U.S. coal production for the week ended May 18 increased 6.1% year over year to 14.3 million tons from 13.5 million tons, according to data from the U.S. Energy Information Administration.
For the 52 weeks ended May 18, production was 738.0 million tons, representing a year-over-year slump of 3.2%, while year-to-date coal output declined 5.6% year over year to 265.4 million tons.
The western region's coal production for the week reached 7.7 million tons, posting a 9.5% increase from the prior year's 7.1 million tons. Data for the western region covers Powder River Basin mines.
Coal production from Appalachian mines totaled 3.9 million tons, increasing 2.2% from the year-ago week's 3.8 million tons.
The interior region's production improved 2.6% to 2.7 million tons, compared to 2.6 million tons a year ago. Interior region data covers mines in the Illinois Basin.
The EIA's production data is derived from rail carload estimates.