ABSTRACT
The summary of the geotechnical features of the structures is presented in table 5.2 and is based on the mapping of the Lince open pit.
Fill Roghness Estructure
Strength Thinckness cm Type E.Max E.Middle Wall
alteration Moisture
6. METHOD OF EXPLOITATION
The deposits are exploited both by open pit and underground mining with a total production of 486,000 t/month. The Lince open pit contributes with 300,000 t, Nucleo X open pit with 50,000 t, and the underground mine exploited by sublevel stoping and cutand-fill methods with 63,000 t, whereas the small mines exploited by contractors produce 73,000 t.
