Evaluation of the creditworthiness of extractive industry companies Ryszard Pukala, Nataliya Vnukova, Tetiana Tokhtamysh, Oleksandr Yaholnytskyi and Kateryna Hranko E3S Web Conf., 168 (2020) 00035 Published online: 06 May 2020 DOI: 10.1051/e3sconf/202016800035