Research of the properties of quarry tuff-stone for complex processing Zinovii Malanchuk, Vitalii Zaiets, Lesia Tyhonchuk, Svitlana Moshchych, Ganbileg Gayabazar and Phuong Thao Dang E3S Web Conf., 280 (2021) 01003 Published online: 30 June 2021 DOI: 10.1051/e3sconf/202128001003