ðeɪ sˈʌbsᵻkwəntli kənstɹˈʌktᵻd ðə sˈaʊθ dˈɛvən ɹˈeɪlweɪ wˌɪtʃ ˈɑːpɚɹˌeɪɾᵻd fɚɹə jˈɪɹ wɪð ˌætməsfˈɛɹɪk pɹəpˈʌlʃən.
They subsequently constructed the  South Devon Railway which operated for a year with atmospheric propulsion.