ɪn nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi sˈɪks, ðɪ ˈæʃlənd ɹᵻfˈaɪnɚɹi mˈænɪdʒmənt ɡɹˈuːp fˈɔːɹmd ðɪ ˈæʃlənd ˈɔɪl ænd ɹᵻfˈaɪnɪŋ kˈʌmpəni tə ɹˈʌn ðə fˈɔːɹmɚ swˈɪs ˈɔɪl ˌɑːpɚɹˈeɪʃənz.
In 1936, the Ashland refinery management group formed the Ashland Oil & Refining Company to run the former Swiss Oil operations.