Currently part of Corus, formerly British Steel, Trostre Works was established in 1947, involving the demolition of several farmhouses and cottages in the area. One of the farmhouses, Maes-ar-ddafen-fach or Maesarddafen Fach (nprn 415849), was restored as an eighteenth-century cottage and remains within the steelworks site. In 2000, Trostre Works specialised in coating (tinplating) coil steel produced at Llanwern (nprn 86821) and Port Talbot (nprn 91392) steelworks.
B.A.Malaws, RCAHMW, 09 March 2000 & 26 January 2012.