dˈʊɹɹɪŋ ðə sˈɛkənd wˈɜːld wˈɔːɹ, fɹʌm hɪz pəzˈɪʃən ɔnðɪ ɛɡzˈɛkjuːtˌɪv ʌvðə mˈaɪnɚz fˌɛdɚɹˈeɪʃən ʌv ɡɹˈeɪt bɹˈɪtən, hˈɔːɹnɚɹ ɛksplˈɔɪɾᵻd tə ðə fˈʊl ðə jˈuːniənz ɛnhˈænst bˈɑːɹɡɪnɪŋ pəzˈɪʃən, sᵻkjˈʊɹɹɪŋ sɪɡnˈɪfɪkənt ɪmpɹˈuːvmənts ɪn mˈaɪnɚz wˈeɪdʒᵻz ænd kəndˈɪʃənz.
During the Second World War, from his position on the Executive of the Miners' Federation of Great Britain, Horner exploited to the full the union's enhanced bargaining position, securing significant improvements in miner's wages and conditions.