ðə mˈaɪnz bɪɡˈæn tə klˈoʊz dˌaʊn ˈæftɚ wˈɜːld wˈɔːɹ ɹˌoʊmən tˈuː ænd tədˈeɪ ðɛɹˌɑːɹ vˈɛɹi fjˈuː ˈæktɪv kˈoʊl mˈaɪnz ɪnðə fˈiːld.
The mines began to close down after World War II and today there are very few active coal mines in the field.