ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti nˈaɪn, mˈæskɪnˌɛnfɐbɹˌɪk bˈɜːkhɑːɹt bɪkˌeɪm pˈɑːɹt ʌv sˈʌlzɚɹ ˌeɪdʒˈiː, æt wˌɪtʃ pˈɔɪnt ɐ sˈɛkənd pɹədˈʌkʃən plˈænt wʌz ˈoʊpənd ɪn wˈɪntɚθɚ.
In 1969, Maschinenfabrik Burckhardt became part of Sulzer AG, at which point a second production plant was opened in Winterthur.