fɔːɹ kəmpˈæɹɪsən, ðə nˈɔːɹθ ˈæntɪlˌoʊp ɹɑːʃˈɛl mˈaɪn, fˈɔːɹmɚli ðə lˈɑːɹdʒɪst kˈoʊl mˈaɪn ɪnðə wˈɜːld, pɹədˈuːsᵻz sˌʌm ʌv kˈoʊl pɜː jˈɪɹ æɾə hˈiːɾɪŋ vˈæljuː ʌv fɚɹən ˌoʊvɚɹˈɔːl hˈiːt kˈɑːntɛnt ʌv ɹˈʌfli .
For comparison, the North Antelope Rochelle Mine, formerly the largest coal mine in the world, produces some  of coal per year at a heating value of  for an overall heat content of roughly .