Clean and low cost processing of gold ores

by Villachica, Carlos A., Regalado, Leonardo C., Anco, Percy D.
Source: 1. 7th Conference on environment and mineral processing, part II 1. Ostrava : Vysoká škola báňská - Technická univerzita, 2003 1. 8024802481 1. S. 365-371

Dynamic neutralization and coagulation (DNC) process for efficient and low cost treatment of acid mining drainages

by Carlo, Michel R., Dextre, Christian E., Valdizan, Dario, ml, Villachica, Carlos A.
Source: 1. Metallurgy, refractories and environment 1. Košice : Technická univerzita, 2002 1. 80-7099-821-0 1. S. 463-472

Total flotation advances: an analysis from economic and environment point of view

by Bazán, Dionisio G., Gonzáles, Edgard C., Llamosas, Jaime A., Valdizan, Dario, ml, Villachica, Carlos A.
Source: 1. Metallurgy, refractories and environment 1. Košice : Technická univerzita, 2002 1. 80-7099-821-0 1. S. 473-480