https://www.wvhistoryonview.org/catalog/004526https://www.wvhistoryonview.org/image/004526.jpgRectifier at Williams River Mine, Webster County, W. Va.1949Coal mines and mining--West Virginia--Ansted.Coal Mines and Mining--William River Mine.Electric current rectifiers.A close-up view of a rectifier in the Williams River Mine in Webster County, W. Va. Gauley Mountain Coal Company, Ansted, W. Va. 'Taken by mechanization' written on the front of the photograph. West Virginia History OnView