The Dennis section of Gresford Colliery (nprn 301580) was the scene of one of the worst mining disasters in the country when on 22 September 1934 there was a major underground explosion; that and the subsequent fire eventually killed 266 miners. In 1982 a monument was erected in the grounds of Gresford Colliery Club to commemorate the disaster; the memorial comprises two tapering stone piers supporting one of the winding sheaves from the colliery. In 2000 the names of all those who lost their lives in the disaster were added to the memorial.
B.A.Malaws, RCAHMW, 12 June 2008.