The Logan Coal Field is the name used to describe a coal-producing section of West Virginia that includes the following counties, in whole or in part: Logan and Wyoming counties.
Seams in the Logan Coal Field
Geologically, the coals of the Logan Coal Field are situated in the lower division of the Kanawha group of the Pottsville series. The topmost seam mined is the Winfrede and the bottom is the Eagle. Of twenty-one seams in the interval between the Winifrede and the Eagle, six are minable. These seams are the Winifrede (Dorothy), Chilton, Cedar Grove (Island Creek), Alma (Peerless), No. 2 Gas, and Eagle seams.