fˈɑːloʊɪŋ ðə sˈɪɹiəs slˈʌmp ɪnðə kˈoʊl ˈɪndʌstɹi stˈænfɚd mˈɜːðɚ kˈɑːlɪɚɹi klˈoʊzd ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti sˈɛvən, pˈɛlɔː mˈeɪn ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti tˈuː, ænd ɹˈɪtʃmənd mˈeɪn ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti sˈɛvən.
Following the serious slump in the coal industry Stanford Merthyr Colliery closed in 1957, Pelaw Main in 1962, and Richmond Main in 1967.