PERUMIN 33 Mining Convention, yog ib qho tseem ceeb tshaj plaws mining txheej xwm nyob rau hauv lub ntiaj teb no.Peb cov thawj coj muag khoom tau koom nrog kev lag luam tawm thaum lub Cuaj Hlis 18-22 2017 ntawm Public University of San Agustin (Arequipa)