Mechanisation of small scale gold mining processing methods with the introduction of hammer mills

by Anim-Sackey, Collins
Source: 1. New trends in mineral processing IV, part II 1. Ostrava : Vysoká škola báňská - Technická univerzita, 2001 1. 80-7078-886-0 1. S. 447-450

Water pollution and small scale gold mining activities in Prestea area of Ghana

by Anim-Sackey, Collins
Source: 1. New trends in mineral processing IV, part II 1. Ostrava : Vysoká škola báňská - Technická univerzita, 2001 1. 80-7078-886-0 1. S. 451-456