PERUMIN 33 Mining Convention, imodzi mwazochitika zofunika kwambiri zamigodi padziko lapansi.Oyang'anira athu ogulitsa adachita nawo ziwonetsero zamalonda pa Seputembara 18-22 2017 ku Public University of San Agustin(Arequipa)
Nthawi yotumiza: Nov-22-2018