Kev Lag Luam Ntau Lawm
Peb cov neeg muas zaub los ntawm kev lag luam hauv tsev thiab txawv teb chaws. Nyob rau hauv Suav teb, peb cov khoom ob-edged mining khoom lag luam feem ntau tshaj 70%. Txawv teb chaws, lub lag luam muag khoom tseem ceeb ntawm peb cov tshuab zeb zeb yog Central Asia, Southeast Asia, Russia, Middle East, Africa thiab lwm thaj chaw.
