Cov kaus mom kev nyab xeeb yog ib yam khoom muaj nyob rau hauv ib puag ncig mining.
Lawv yuav tsum tau lees paub tsis yog tsuas yog cov ntawv pov thawj kev nyab xeeb ntawm cov thee mine tab sis kuj tseem muaj ntawv pov thawj kev nyab xeeb ua haujlwm, ua kom muaj kev tiv thaiv zoo rau cov neeg siv.