Widemouth, named for nearby Widemouth Creek, was an unincorporated community and coal town (now abandoned) in Mercer County WV, 2.7 miles south/southeast of Matoaka WV. (https://en.wikipedia.org/wiki/Widemouth,_West_Virginia) (https://westvirginia.hometownlocator.com/maps/feature-map,ftc,3,fid,155…)
The three mines and coal town were run by the American Coal Company of Allegheny County. (http://www.wvgenweb.org/wvcoal/edkins5.html) Piedmont No 1, No 2 and No 3 were a drift mines operating in the Pocahontas No. 3 seam and was located on a branch of the Widemouth Creek Division. Haulage was performed by electric motors, steam locomotives and mules. (https://books.google.com/books?id=3QsiAQAAMAAJ&pg=RA3-PA252&lpg=RA3-PA2…,+"Widemouth,"+Years+of+operation&source=bl&ots=an761bWKIA&sig=ACfU3U0a6Ha-kDRJXXMyRMQPBLnfBkzPoA&hl=en&sa=X&ved=2ahUKEwjXiOfHgqPtAhUPqlkKHX1FBrcQ6AEwCXoECAUQAg#v=onepage&q=American%20Coal%20Company%2C%20"Widemouth%2C"%20Years%20of%20operation&f=false) pg 252.
Widemouth had a post office and a population of 366 in 1940. (https://books.google.com/books?id=hbQzBYCTK00C&pg=PA851&lpg=PA851&dq=Am…,+"Widemouth,"+Years+of+operation&source=bl&ots=hUTj0ymAgh&sig=ACfU3U0wIr93fASaZU7Z9Y1EWoKvFK_DCQ&hl=en&sa=X&ved=2ahUKEwjfzJ2AhaPtAhUDQzABHSUYD6o4ChDoATAGegQICBAC#v=onepage&q=American%20Coal%20Company%2C%20"Widemouth%2C"%20Years%20of%20operation&f=false) pg 851