Surimbayev Bauyrzhan Nurzhanovich; Kanaly Yernazar Serikuly; Bolotova Lyudmila Sergeevna; Shalgymbayev Serikbol Tleulesovich. BEHAVIOUR OF SULFUR, ARSENIC AND ORGANIC CARBON IN A GRAVITY CONCENTRATION OF GOLD FROM REFRACTORY ORE. SCT 2020, 116-125.