19/09/2021
14/09/2021
27/07/2021
03/07/2021
24/06/2021
15/06/2021
25/05/2021
20/05/2021
14/05/2021
12/05/2021
08/04/2021
26/03/2021
11/03/2021
04/03/2021
02/03/2021
25/02/2021
Instituto de Ingenieros de Minas del Perú (IIMP)
19/09/2021
14/09/2021
27/07/2021
03/07/2021
24/06/2021
15/06/2021
25/05/2021
20/05/2021
14/05/2021
12/05/2021
08/04/2021
26/03/2021
11/03/2021
04/03/2021
02/03/2021
25/02/2021