The 1968 discovery of oil at Prudhoe Bay and the 1977 completion of the Trans-Alaska Pipeline System led to an oil boom.
ðə nˈaɪntiːnhˈʌndɹɪd sˈɪksti ˈeɪt dɪskˈʌvɚɹi ʌv ˈɔɪl æt pɹˈʌdhoʊ bˈeɪ ænd ðə nˈaɪntiːnhˈʌndɹɪd sˈɛvənti sˈɛvən kəmplˈiːʃən ʌvðə tɹˈænzɐlˈæskə pˈaɪplaɪn sˈɪstəm lˈɛd tʊ ɐn ˈɔɪl bˈuːm.