Peb tsom mus rau mining tshuaj ntsuam cov cuab yeej tsim thiab tsim khoom, kev tshaj lij hauv kev vuam thiab kev ua haujlwm ntawm cov khoom siv mining khoom seem.Peb tau sau ntau qhov kev paub dhau los hauv mining qhov chaw fabricating txheej txheem hauv kev ua haujlwm ntawm cov thee ntxuav thiab npaj cov khoom siv.