hiː kənvˈiːnd ɐ mˈiːɾɪŋ ʌv mˈaɪnoʊnɚz ˌɔn mˈeɪ θɹˈiː, wˈʌn θˈaʊzənd sˈɛvənhˈʌndɹɪd sˈɛvənti fˈoːɹ, wˌɪtʃ dɪvˈɛləpt ɹˌɛɡjʊlˈeɪʃənz tə ɡˈʌvɚn ðɪ ˈɪndʌstɹi.
He convened a meeting of mineowners on May 3, 1774, which developed regulations to govern the industry.