Nrog rau cov cuab yeej ntawm cov ntsia hlau pawg los kho lub hauv paus, cov txheej txheem kev tsim kho tsis tas yuav tsum muaj cov cuab yeej siv tshuab nyuaj, thiab tsuas yog yuav tsum muaj lub tshuab excavator, lub taub hau hydraulic tsav, thiab ntau lub taub hau ntsia hlau. Tag nrho cov txheej txheem kev tsim kho yog yooj yim heev thiab ceev, txuag tau ntau tus nqi zog, cov nqi sijhawm thiab cov nqi khoom siv.
