U.S. Energy Information Administration - EIA - Independent Statistics and Analysis
Weekly U.S. Coal Production
|Coal producing region & state
(thousand short tons)
|Week ended||Year-to-date ||52 weeks ended|
|% change||% change|
 The estimates of railroad cars loaded (at bottom of columns) are not exact for the time periods specified. Weekly railroad cars loaded are not prorated to a daily basis. For the current year, the estimates include railroad cars loaded for the week that includes January 1, and, therefore, can include railroad cars loaded on days in the prior calendar year, which makes the estimate slightly larger than an exact year-to-date aggregate. For the previous year, the estimates can include extra days both at the start and at the end of the year-to-date period. The week that includes January 1 can include railroad cars loaded on days that occurred in the prior year. The ending date (previous year)--as specified at the top of the year-to-date column--stops short of a full week ending on a Saturday in the previous year. But the previous year-to-date aggregation includes a full week's worth of railroad car loadings for that last week, which makes the estimate slightly larger than an exact year-to-date aggregate. By contrast, coal production is prorated to a daily basis and the year-to-date aggregates of produced tons of coal are exact for the time periods specified.